How to close the corner junction of ondulin. Do-it-yourself roof from ondulin. Connecting a sloping roof to a wall: sealing

Covering the roof of the bath with ondulin is one of the most popular solutions. And this is due not at all to the low cost of roofing, but to the features of operation, the loads acting on the roof of the bath and the ongoing processes.

We can safely say that covering the bath with ondulin is more cost-effective than, for example, metal tiles. Why?

During the use of the bath for its intended purpose, the rooms are very heat and air humidity. Steam penetrates through the ceiling and accumulates in the attic. If the roof is not insulated, then the condensate settles on the lower part of the roofing, flows down to wooden rafters and crate. And the more low temperature air in the street, the large quantity moisture settles on surfaces. And moisture, as you know, - main enemy any roof.

Consider another situation where the bath is periodically operated in winter time when there is a layer of snow on the roof. Metal roofing has a high thermal conductivity. When the roof warms up, the snow cover begins to thaw, and then freeze, forming ice. Under such conditions corrosion processes are rapidly progressing, which leads to the need for maintenance, repair or even replacement of the roofing.

Considering all of the above situations, we conclude: a bath requires a roofing with low thermal conductivity and impervious to moisture. The optimal solution is ondulin, which:

in the production process, it is impregnated with bitumen from all sides, after which it perfectly tolerates operation in conditions of high humidity;
does not collapse due to several scratches that have appeared;
heats up quickly and prevents condensation on the surface;
does not make noise when it rains;
dries quickly;
it is light in weight, which reduces the load on the foundation.

However, you should not expect that ondulin will last 50 years. This material is not characterized by high strength and wear resistance. Subject to all installation rules, the roof will last 15-20 years, after which the coating will need to be renewed due to the loss of the original shade and, possibly, shape by ondulin.

Important! Among the disadvantages of ondulin is high flammability. But this material is not prone to spontaneous combustion, it only supports combustion. This disadvantage can also be considered as an advantage, since with a quick exit of fire to the outside, it is possible to save the main part of the building.

Prices for ondulin

Types of ondulin

Ondulin is produced in three versions. Sheets have different sizes and weight, but are produced using a single technology.

Name	Technical specifications	Peculiarities
	195 x 96 cm - dimensions. 3 mm - thickness. 6.3 kg - weight.	There are markings on the sheets, relying on which it is convenient to drive in nails. There is a hydrobarrier lock. On sheets of 10 waves.
	195 x 76 cm - dimensions. 3 mm - thickness. 5 kg - weight.	The narrowest eight-wave sheets. When installing narrow sheets, there will be more longitudinal overlaps, respectively, the overall rigidity of the roof and its bearing capacity will increase.
	100 x 75 cm - dimensions. 2.6 mm - thickness. 2.5 kg - weight.	The best option for baths with a small or having complex shape roof. small size eight-wave sheets reduce the amount of scraps and waste.

The waves of all types of ondulin are the same - 9.5 cm pitch and 3.8 cm height. To minimize the amount of waste when arranging the roof, you can combine different sheets.

Ondulin installation rules

The installation rules are as simple as possible, remember and apply them even to those who have not previously been involved in the installation of roofing.

Bituminous sheets are fastened either to a solid or to a sparse crate, observing the recommended overlap sizes. The exact data is presented in the tables below.

Data for roofs with a slope of 5-10 degrees.

The crate is arranged solid.

Important! In all situations under consideration, the edge of the ondulin sheet on the cornice cannot be further than 35 mm from the edge of the crate.

Data for roofs with a slope of 10-15 degrees.

Data for roofs with a slope of more than 15 degrees.

Parameter		DIY	17-27 degrees	Over 27 degrees
Lathing pitch, cm	61	61	26,7	43
End overlap, cm	12	17	20	14
Overlap on the sides, number of waves	1	1	1	1
Eaves overhang, cm	7	7	7	7
Number of nails per 1 sheet, pcs.	20	16	14	13

Important! In regions with a heavy snow load, it is recommended to make more frequent lathing and increase sheet overlaps.

For a continuous crate, it is used:

plywood FSF;
edged / unedged board;
DSP plates;
OSB-3 boards, etc.

Prices for plywood FSF

plywood FSF

A sparse crate is made from:

boards with a thickness of at least 25 mm;
bars with a thickness of at least 25 mm.

Of the additional elements (depending on the design of the roof of the bath) you may need:

valley planks 100 cm long, 50 cm wide;
ridge slats 100 x 50 cm;
sealing tape 250 x 30 cm;
Sealing tape “Onduflash”
gable strips 100 x 21 cm;
nails 70 mm long;
apron covering 93 cm long, 1.5 mm thick;
polyethylene foam filler, thickness 19 mm, length 85 cm;
steam / waterproofing / superdiffusion membrane “Ondutis”.

General rules for the installation of bitumen sheets.

rule	Description
	When working on the roof, be sure to use a safety belt and rope. Safety ropes must not be attached to the heads of chimneys or ventilation pipes. To move on the roof, it is necessary to use a ladder with a hook, ladders with transverse bars to support the legs.
	Rain, hail, fog, ice, wind at a speed of more than 10 m/s - with such weather conditions laying sheets is prohibited.
	Bitumen sheets are laid strictly at air temperatures above -5°C, but not more than +30°C. AT hot weather ondulin becomes too plastic and it is inconvenient to work with it, especially for beginners.
	It is convenient to mark the sheets with a colored pencil, using a ruler, a rail, a stretched thread or a smooth factory edge of another sheet of ondulin.
	Determine the direction of the prevailing winds for your area. Laying sheets must begin from the lower edge of the roof, on the side where there is no wind.
	Stretching or compressing bitumen sheets by more than 1 cm is highly discouraged.
	The second, and then every even row, should not begin with a whole sheet, but with a sawn in two lengthwise. In one place, 4 corners of the sheets should not converge at once, otherwise deformation cannot be avoided roofing material.
	● All nails are driven into the upper crest of the wave at right angles to the crate. ● The first four nails are driven into the corners of the sheet. ● Bottom and top nails are hammered into each comb. ● In the central part, the nails are driven in through one wave so that the ondulin does not deform. ● Nails are driven into the overlapping edge wave during the installation of the next sheet.

Prices for steam / waterproofing, superdiffusion membrane “Ondutis”

Calculation of roofing and additional elements for the roof of the bath

Step 1. Calculation of the number of sheets.

To begin with, the roof must be measured.

Initial data: ridge length 8 m, gable length 16 m, slope length 4 m, total roof area 64 m2.

For the calculation, we take a sheet of ondulin 1 m 95 cm long and 95 cm wide.

The useful area of the sheets depends on the slope of the roof:

5-10 degrees - 1.29 m2;
10-15 degrees - 1.54 m2;
15 degrees and above - 1.56 m2.

In our case, the useful area of one sheet will be 1.56 m2.

To find out the number of sheets, you need to divide the total roof area by usable area one sheet and round to big side to an integer value.

64 m2: 1.56 m2 = 42 sheets.

Professionals advise purchasing sheets from stocks of 5-10% of the total. So, for a roof area of 64 square meters it is recommended to purchase 45 sheets of ondulin.

Step 2. Calculation of the number of ridge bars.

In addition to directly bituminous sheets, you will need a ridge bar. The useful length of one plank is 85 cm.

Accordingly, we divide the length of the roof ridge by the useful length of the plank and get the required amount.

8 m: 0.85 m = 10 planks.

Step 3. Calculation of the number of gable strips.

We use the formula that was used when calculating the number of ridge slats.

The useful length of the gable bar is 95 cm.

16 m: 0.95 m = 17 tongs.

Plus one spare tong, total 18 pieces.

Step 4 Calculate the number of nails.

One sheet of ondulin must be fixed with twenty nails. Multiply the number of sheets by the number of nails.

45 x 20 = 900 pieces.

Also, nails will be needed to fix the additional elements, so you should take it with a margin so as not to interrupt work due to suddenly running out of hardware.

We cover the roof with our own hands. Instruction

Stage 1. Mount the crate under the ondulin. Consider the slope of the roof to accurately determine the distance between the boards.

Before you start laying the coating, you need to nail bars under the gable and ridge strips for greater structural rigidity.

Fasten the bars at a distance of up to ten centimeters from the center of the ridge bar. This distance is chosen depending on how steep or gentle the slopes are. Skate is best to try on the roof in advance.

Stage 2. Attach a special bending to the eaves various angles apron bar. Due to its design, the element can be fixed at any distance from the edge of the cornice.

Fasten the elements with a five-centimeter overlap.

Stage 3. Install the wind board 3 cm above the level of the crate.

Prepare roofing for installation. Trim if necessary. Install the first cover sheet so that its long edge extends over the windboard. If a drip was installed before, then install the sheet flush with the edge of the roof.

If the presence of a drip is not provided, the sheet should hang over the edge of the roof by no more than five centimeters.

Stage 4. To protect the roof space from birds, insects and debris, use an eaves filler. To ensure ventilation of the under-roof space, make holes in the filler by squeezing out the material with a suitable tool at hand.

Stage 5 Begin the mounting process.

New nails have a strong, monolithic head. The shade of the cap corresponds to the color of the roofing material. Drive nails with a hammer, placing them perpendicular to the coating and the boards of the crate.

Stage 6. If it is necessary to install gable elements, then fix the wind board tightly to the ondulin, and the upper edge of the board should be 35 mm higher than the surface of the crate.

The tongs are mounted from the bottom up. The overlap of the tongs on each other is 12-15 cm.

Drive the nails in from above and from the side in increments of 31 cm, and in places where the fixation overlaps, pay extra attention.

Stage 7. Attach a horse. Planks are fastened, taking into account the direction of the winds. Determine in which direction it blows most often and mount the skate on the other side.

Take the sealant (cornice filler), free the holes and insert it under the plank.

Nail the skate along each underlying wave of the ondulin, alternately on each side.

Install the following ridge strips with an overlap of 15 cm and in such a way that the hydraulic barriers coincide.

Video - Analysis of possible errors

Internal junction of slopes

It is made using a valley plank.

Stage 1. Fasten boards or beams that will be additional support for the plank. The bar itself will be attached to these boards.

Stage 2. Take a sheet of roofing and fix it on the lower slope. Trim it if necessary.

Do not forget about the order of hammering fasteners.

Stage 3. Stick the sealing tape Ondutis BL in the places of overlapping of the valley elements for better tightness of the roof.

Stage 4. Nail the valley plank. Drive nails into each ridge underneath.

Stage 5 Fasten the seal.

Start attaching the sheets over the plank. The bottom edge should not be more than seven centimeters from the fixation point. Drive fasteners into each ridge along the bottom edge.

Consider an example on a roof with a slope greater than 15 degrees.

Under the ondulin, in this case, a sparse crate of boards is mounted with a step of 61 cm.

Stage 1. Fasten additional boards on the lower slope. Nail them in such a way that the tong fastener falls on them.

Stage 2. Take a sheet and install on the lower slope broken roof. Drive the hardware from below, then from above, and then in the center in a checkerboard pattern through one wave.

Stage 3. Attach the seal to the top edge of the fixed sheet. Lay the gable strips on top with an overlap of 15 cm.

From below, fix the bar with nails into each wave of the underlying ondulin.

Important! The lower edge of the sheet should not hang more than 7 cm from the attachment point.

Valley plank: installation

Endova - a roof element located at the junction of two slopes (inner corner).

Stage 1. There should be a solid base along the axis of the valley. The width of the crate is at least 25 cm from the central axis of the plank.

Stage 2. Lay items from bottom to top. Fasten the first bar with the removal of the lower edge by 5-7 cm, in the future it is not difficult to trim the excess.

On a note! To align the valley plank with respect to the axis as accurately as possible, fix it with a construction stapler on four sides. Drive the staples closer to the edges.

Lay and staple the rest of the elements in the same way with an overlap of 15 cm.

Stage 3. Ondulin sheets that go onto the valley bar, cut at a distance of 5-6 cm from the axis of the valley.

Fasten the sheets on both sides of the valley. Drive fasteners into each wave at a distance of 3-5 cm from the edges of the plank.

Horizontal joint of roof and wall: sealing

Actual for baths with adjoining verandas or terraces, as well as baths attached to the house.

To design the junction, a covering apron and Onduflash Super tape are used.

Stage 1. Nail an additional board or timber to the roof sheathing next to the wall to ensure greater structural strength.

Stage 2. Perform roofing installation.

Stage 3. Lay covering aprons with an overlap in one wave. One side of the additional elements should adjoin the wall, the other should lie on the bituminous sheets.

Fix the lower part of the elements with nails in each wave. top additionally fix the apron with self-tapping screws if the connection is not tight.

Stage 4. From the tape "Onduflash Super" cut a strip 15 cm wide. Stick the tape over the apron with the wall.

Stage 5 Attach the top of the sealing tape metal rail, into the holes of which screw the screws.

Connecting a sloping roof to a wall: sealing

Actual for baths with a porch having a gable roof.

Stage 1. Nail a board or bars close to the wall on the crate.

Stage 2. Attach roofing material.

Stage 3. Stick "Onduband" or "Onduflash Super" at the junction of the wall and the coating to seal the joint.

Stage 4. Screw a metal rail to the top edge of the tape.

And secure the bottom edge of the tape with roofing nails.

Chimney passage: installation of additional elements

Almost every bath has a chimney. The only exceptions are saunas with electric heaters. Place of passage chimney through the roof must be properly designed to prevent leaks.

Stage 1. Start by finishing the front wall of the pipe. Try on a covering apron - it should adjoin the pipe so that there are 1 wave to the right and left of the walls).

Trim off the excess with a utility knife.

Put the apron in place and fasten it with nails, and do not drive them into the extreme waves.

Seal the corners of the apron with pieces of Onduflash Super tape.

Stage 2. Attach an apron strip (side connection) to the side walls of the pipe.

Cut off the excess. Nail the apron to the pre-mounted additional crate bars.

Stage 3. Stick the sealing tape on the back wall of the pipe and also on top of the aprons. For this, a tape 15 cm wide is sufficient.

Fix the sealing tape and apron with metal rails.

Apply polyurethane sealant between the top edge of the apron and the wall.

Stage 4. Fasten an additional sheet of ondulin behind the back wall of the chimney.

Bath roof repair. Step-by-step instruction

Consider the option of updating the bath roof without dismantling the old coating, which in this case represented by galvanized corrugated board.

With the help of ondulin, you can eliminate all the shortcomings of the old roof:

poor quality joints leading to leakage;
increased wear of material with high thermal conductivity.

Stage 1. Take measurements and prepare boards with a thickness of at least 25 mm for mounting the battens and counter battens.

Nail boards over the old roofing, placing them parallel to the ridges of the corrugated board.

Nail the crate under the ondulin perpendicular to the fixed boards. The recommended batten spacing can be found in the tables above.

Stage 2. Start laying and fixing ondulin sheets. Due to the low weight of the sheets, an increased load on the bearing structures buildings and foundations.

Stage 3. Fix additional elements.

Repair of a roof is made with the shortest terms and with the minimum expenses.

Video - Slate roof upgrade option

Useful life hacks from professionals

Tip 1. You can cut the ondulin across using a regular wood saw. And to cutting edge not clogged with bitumen, moisten it periodically with water. You can also use silicone grease or oil.

But it is most convenient to use a jigsaw. And to clean the knife, just saw through any unnecessary wood block.

You can cut the bitumen sheet along the wave with an ordinary construction knife.

Tip 2. Nails need to be driven in, slightly sinking the hat into the coating. But at the same time, it is important to calculate the efforts so that the sheet is not broken with a hammer when trying to hammer the hardware as deep as possible.

Video - How to hammer nails

Tip 3. Dismantling an already nailed sheet without damaging it is not only problematic, but in most cases impossible. This is always worth remembering. Make sure that the sheet lies perfectly flat, only then start fixing. It is for this purpose that a guide thread is pulled along the lower edge of the crate.

Tip 4. If it became necessary to walk on the roofing with your feet, then never step between the waves. Place your foot exclusively on the top ridges.

Tip 5 Never throw away the installation instructions that will be included with the roofing material delivered to the site. Firstly, this instruction indicates all the necessary distances, overlaps and overhangs. And secondly, this instruction is a warranty card for materials.

Tip 6 Take care of your ondulin roof to extend its life by several years. Have your roof checked twice a year. Best time for this - October and May.

Make sure that the branches of shrubs and trees located next to the bath do not come into contact with the roof. If necessary, cut them in a timely manner with secateurs, otherwise roof repairs cannot be avoided.

Clean the ondulin with a broom at least twice a year. AT spring period you need to clean up the garbage accumulated over the long winter, and in the fall you need to clean up all the fallen leaves. All the debris that remains on the roof will definitely begin to rot. The roofing itself is unlikely to quickly collapse from this, but the service life will be reduced for sure.

Don't forget to clean your gutters.

On a note! Cleaning up after a rainstorm is much easier.

Video instruction for installation of the Ondulin valley

Making the roof adjoining Ondulin to the chimney

1 - bitumen sheets Ondulin
2 - roofing nails Ondulin
3 - crate
4 - bars with a thickness of 30 mm
5 - superdiffusion membrane ONDUTIS SA130 or SA115 (laid directly on the insulation)
6 - insulation
7 - rafter board
8 - vapor barrier ONDUTIS R100, R70 or R-thermo
9 - rough binder
10 - finishing filing

Storage of Ondulin sheets

Prior to installation, ONDULIN sheets must be stored in their original packaging in a horizontal position.

Store the material in a well-ventilated, dry area or under a canopy to protect from the sun.

When stored in a heated room, do not install heating appliances closer than 1 meter to avoid deformation of the sheets.

Sheets should be mounted only at positive temperatures. With negative (up to -5 °) - with great care. Below is not possible. It is also not recommended to install the Ondulin roof at very high positive temperatures (from + 30 °).

Required tools: hammer and wood saw, oiled to avoid jamming. You can use a circular saw or a hand saw.

It is better to mark ONDULIN sheets with a colored pencil. For accurate marking of a wavy surface, you can use a piece of sheet, a rail or a stretched rope.

Under-roof ventilation allows to remove moisture from wooden structures and insulation, as well as reduce the temperature in the room under the roof.

With a roof slope of 5° to 10° (slope from 1/11 to 1/6), a solid board or plywood sheathing is required. End overlap: 30 cm, side overlap: 2 waves*.

With a roof slope of 10 ° to 15 ° (slope from 1/6 to 1/4), a crate is made with an interval of 45 cm along the axes. End overlap: 20 cm, side overlap: 1 wave*.

With a roof slope angle of 15 ° (a slope of 1/4 or more), a crate is made with an interval of 61 cm along the axes. End overlap: 17 cm, side overlap: 1 wave*.

*If large is expected snow load on the roof, it is recommended to reduce the interval of the lathing and increase the overlaps.

As a crate, you can use boards or timber. The recommended section of a bar is 40x60 or 50x50 mm. How more distance between the rafters, the larger the section of the crate should be. It is necessary to strictly maintain the distance between the crate; for these purposes, you can use a wooden "interval".

It is necessary to start laying sheets from the edge of the roof opposite to the prevailing winds. The second row of sheets is laid from half of the sheet so that at the corner joint there is an overlap of 3, and not 4 sheets. Otherwise, deformation of the corners may occur.

To fasten one sheet, 20 nails are needed. It is not necessary to drive nails into that wave, where the next sheet will then overlap. First, the sheet is fixed at 4 corners. The bottom of the sheet is attached to each wave. The remaining two rows of nails are nailed through one wave to the crate, while the edges of the sheet are necessarily attached.

The overhang of the sheet on the eaves should recede from the edge of the crate by 5-7 cm.

If the house is installed drainage system or it is necessary to close the cracks on the eaves to improve appearance, then you can use the eaves bar. eaves plank has special places for bending on different distance from the edge, which allows you to adjust its overhang. ONDULIN should be fastened at a distance of no more than 5 cm from the edge of the sheet.

To decorate the gable (pediment), use the special gable or ridge element ONDULIN. Installation starts from the bottom of the tong. The overlap is 15 cm.

The fastening of the ridge elements must be started from the edge opposite to the prevailing winds with an overlap of 12.5 cm. The ridge element must be nailed along each wave of the underlying sheet to additional lathing bars. Eaves filler can be used to close gaps and provide ventilation.

It is necessary to nail the ridge element along each wave of the underlying sheet to the additional bars of the crate. Eaves filler can be used to close gaps and provide ventilation.

The side joint of the roof with a wall or a pipe is made using a side junction bar. Planks are installed from the bottom up with an overlap of 10-15 cm. The top of the junction bar is pressed against the wall with a metal strip and coated with sealant.

The end and side joint of the roof with a vertical wall can be made using the ONDULIN valley. Eaves filler can be used to close gaps and provide ventilation. The junction of the valley element with the wall and corner connections the valleys must be reliably waterproofed with self-adhesive tape ONDUBAND or ONDUFLASH-SUPER.

The junction of the roof to the pipe is closed on the underside with a covering apron. The apron is nailed to each wave of the underlying ONDULIN sheet. On the sides, lateral junction strips are used. The top of the apron and the junction strips are pressed against the wall with a metal strip and coated with sealant. The junction to the pipe at the back is made using ONDUBAND or ONDUFLASH-SUPER self-adhesive tape.

Cellulose-bitumen roofs are distinguished by their affordable price, high service life and ease of installation. That is why more and more often a do-it-yourself roof is being built from Ondulin, and not from materials that are more difficult to process. By following the laying technology, you can be sure that the roof will last more than one generation!

The advantages of building a roof with your own hands from Ondulin

The reliability of the material is evidenced by the unprecedentedly high warranty period for water resistance from the manufacturer - as much as 15 years! At the same time, bituminous sheets do not deform in the sun and withstand high-degree frosts. And the rough surface of Ondulin allows the snow to melt right on the roof, preventing the convergence of large layers.

If you block your house on your own, then only with Ondulin. And there are several reasons for this:

the material is practically non-combustible;
the roof can easily withstand medium-sized hail;
for installation, you only need a hammer, a hacksaw for wood and a construction knife.

Types of roofing from the manufacturer Ondulin

Before buying corrugated bitumen sheets, you should familiarize yourself with their types and purchase the ideal option:

Ondulin Smart - sheets measuring 1.95x0.96 m and weighing 6.3 kg;
Ondulin DIY - sheets for 2 waves narrower, which reduced their weight to 5 kg;
Ondulin tiles - sheets standard size 1.95x0.96 m, imitating real tiles, weighing 5.9 kg.

The thickness of Ondulin sheets has remained unchanged for more than 70 years and is 3 mm. So in the case of reconstruction of only part of the roof, you can be sure of the interchangeability of the sheets.

General rules for roofing from Ondulin

When purchasing roofing, you should pay attention not only to the integrity of the sheets and the quality of their painting, but also to the accompanying documents. So, all Ondulin materials are accompanied by instructions for their installation and requirements for the installation of the crate. Accurate adherence to the instructions guarantees the durability of the roof and the strength of the fasteners.

Requirements for the crate

The first thing you need to decide is whether the roof will be insulated and whether waterproofing film? If not, the crate can be stuffed directly onto the rafters.

If additional waterproofing of the roof is planned, between roofing and the film should be made ventilation gap. To do this, the waterproofing is rolled out along the rafters, fixed on top of the counter-lattice, and only then the crate is stuffed.

The frequency of the lathing under Ondulin depends on the angle of inclination and the slope of the roof:

for roofs with a slope of 1/11 to 1/6 and an angle of 5 to 15 degrees, a continuous crate is needed;
for roofs with a slope of 1/6 to 1/4 and an angle of 10-15 degrees, you can make a sparse crate with a maximum step of 45 cm;
for other roofs with a large slope, the maximum batten spacing is 61 cm.

For flat roofs Ondulin is not suitable. OSB boards, plywood, fiberboard or boards nailed without a gap. For a sparse crate, you can use a board with a thickness of 2.5 cm or bars with a thickness of 5 cm.

To increase the reliability of the roof, it is better not to use the maximum step of the crate and make it more frequent. This is especially true for areas with natural hazards.

How to mount Ondulin on roofs depending on the slope angle

Thanks to the markings applied to the Ondulin sheets, you no longer need to make it difficult for yourself by measuring distances to properly fix the roofing material. The applied markings are suitable for all roofs with an inclination angle of more than 15 degrees, the installation process itself is extremely simple:

The top of the wave of the extreme sheet should fall on the windboard. In order not to stretch or shrink the sheets, an additional external beam is attached to the protruding crate at the right distance.

For roofs with an inclination angle of less than 15 degrees, the installation process is slightly different:

side overlap of sheets for roofs with a slope of up to 10 degrees - 2 waves;
end overlap (upper row above the lower row) for roofs up to 10 degrees - 30 cm, for roofs 10-15 degrees - 20 cm;
in this case, you should not be guided by the markings on the sheets, the distance between the rows of nails fixing the center of the sheet is 55 cm for roofs with a slope of up to 10 degrees, and 45 cm for roofs of 10-15 degrees.

In other words, the nails nail the roofing sheets to the battens, so for a sparse batten, it is especially important to accurately calculate the distances so that the nails don't get stuck in the air. More clearly, the principle of fixing sheets is shown in the diagram.

Don't skimp on the number of nails! The bottom of the sheet is always fixed for each wave, otherwise it is impossible to guarantee the reliability of fixing the roofing material. Despite the fact that you can walk along Ondulin, it is better to use stairs and construction walkways during the installation process.

Otherwise, the flexible sheet may stretch under human weight during fixation and subsequently collapse.

Design of individual roof elements

When installing a roof the main problem- correctly connect the material to the chimney or to the wall of the house, as well as close the edges and the ridge. But thanks to the ready-made additional elements and accessories, it is very easy to give the roof a finished look, even for people whose hands are not yet full in construction.

So, for the design of the upper edge shed roof a tong or wind bar works great. After laying the bitumen sheets, a cornice board is nailed to the end so that it is level with the top edge of the sheets. The selected corner element is laid on it, and the gaps between the gable and the roof are closed with a special filler. After that, the tong is fixed with nails for each wave. In the same way, the sides of the roof with a wind board are closed.

The skate can also be used ready-made. It is laid after the roof is completely covered with sheets on both sides. Its installation begins on the same side from which the laying of the roofing material began - from the opposite direction of the wind. The overlap of the ridge element is 12-15 cm, but you need to make sure that its end completely covers the top of the wave of the sheet. After filling the gaps between the ridge and the roof, you can begin to fix the ridge with nails in each wave.

If you need to seal the joint of the chimney pipe with the roof, you can use a special sealing tape and a covering apron. To do this, after the sheets of Ondulin have already been laid, an apron is laid on the front edge of the pipe from below and cut off so that it extends beyond the pipe by one wave on each side. The apron is nailed into each wave.

On top of the apron, a sealing tape is glued on top with an entry into the chimney. On the sides and back, the tape is glued so as to close the junction of the roof and the chimney.

Here the apron does not need to be laid, just the tape is fixed with nails every 30 cm or at the top of each wave. The upper edge of the tape is pressed against the chimney with a metal bar.

Behind the chimney, an additional sheet of Ondulin is laid and fixed, cut in width so as to extend beyond the edges of the pipe by one wave.

The side junctions of the roof to the wall are also sealed with joint tape. The self-adhesive tape begins to be laid from top to bottom so that its lower edge completely covers the wave of the sheet. The upper edge of the tape is pressed with a metal bar, and the lower edge is nailed to the wave in 30 cm increments.

But for horizontal node connecting the roof to the wall will again need a covering apron. It is laid on top of the roofing sheets close to the wall and fixed for each wave.

On top of the wall and the apron itself, a sealing tape is glued, and its upper edge is pressed against an aluminum bar. Interestingly, it is not necessary to attach an apron, it is decorative element. Seam sealing is provided by aluminum-based butyl rubber tape.

Restoration of an old roof in a couple of days

If the repair of the roof is constantly delayed due to the fact that the family has nowhere to move out during the removal and installation new roof, you can use the "hood" technology invented by Ondulin. Due to the light weight of bituminous sheets, they can be laid on top of the old roofing without fear for the strength of the rafters.

over old roof crate is stuffed, and on it standard scheme sheets of Ondulin are laid. At the same time, you can live in peace in the house, because the roof does not go anywhere! The process of restoring a roof with old slate is shown in detail in the video:

planning independent execution roofing, you should first familiarize yourself with the theory of construction. When constructing a roof from ondulin, it will be necessary not only to lay sheets of material, but also to install various component elements - ridge, gable, etc. To form abutments to vertical surfaces, for example, to a pipe, an ondulin covering the apron is used. Consider how to install roofing aprons and other components.

Onduline roofing is a practical, reliable and aesthetically pleasing coating. The roofing material itself affordable price, and given that roofing you can do it yourself, then the cost of building a roof will not be very large.

But, before starting construction, beginners should study the technology of laying ondulin and figure out what components will be required in the process of creating a roof.

What is a cover apron?

A cover apron is a piece that is used to create airtight joints between roofing and vertical surfaces. It is necessary when installing on the roof of pipes and other vertical elements. Standard aprons are made of polypropylene, the dimensions of the part are 94 x 26 cm, the thickness is 1.4 mm.

How to install an apron at the chimney?

Consider how the apron is installed on the example of the design of the roof near the chimney:

Perform pipe measurements.
Set aside the desired length and cut the part along the intended line.

Advice! When taking measurements, it must be remembered that the length of the installed apron must be greater than the length of the pipe by one wave.

Install the prepared part in place and align.
Nailed by hammering nails into each crest of the wave.

Advice! To install the apron, as well as for attaching ondulin sheets, special roofing nails are used. They have a special gasket that ensures the tightness of the connection, as well as caps that close the nail heads. Caps of hats are made of a material that is resistant to ultraviolet radiation, it protects the attachment points from wind and water penetration.

Now you need to measure right amount insulating tape "Onduflnsh-Super". The length of the piece of tape must be equal to the length of the installed part.
Apply the tape so that it covers the junctions. The free ends of the tape extending to the width of the pipe should be bent.
To fix the joint of the insulating tape and the pipe, a metal profile is used, which is fastened around the entire perimeter of the pipe with self-tapping screws.

How to arrange the adjoining of the roof to the wall with the help of an apron?

For the device adjoining the roof to the wall, it is recommended to make an additional crate.
For this, a conventional covering apron and a special part are used - a lateral junction apron (the part can be installed at any location of the ondulin sheet wave in relation to vertical surface walls).
Aprons are installed with an overlap of 15 cm and the details are nailed to the top of the ondulin sheet wave.
The edge of the part that goes onto the wall is fixed with a metal profile. Moreover, the profile must be installed 1-2 cm below the edge of the apron.

The free edge of the apron, protruding beyond the profile, must be bent back, and the joint must be filled with polyurethane-based construction sealant.
You can use another technology - the edge of the apron is inserted into a strobe previously made on the wall, and then this strobe is filled with sealant.
Corner joints are recommended to be sealed using Onduflash-super tape.
The usual covering apron is installed in the same way as when making an abutment to the pipe.

Other components of the onduline roof

In addition to covering aprons, the following components are used when constructing a roof:

Skate element. Special detail, which is used to decorate the roof ridge. The elements are installed with an overlap in the upper part of the roof and nailed with roofing nails. The same element can be used to decorate the roof ribs.
Gable element. The detail is used to decorate gables and roof slopes. It is used as a decorative and protective element. The tongs protect the structures from precipitation, which, in the event of a strong side wind, could penetrate into the under-roof space. Installation of gable elements starts from the side of the eaves and continues to the ridge. Install parts with an overlap.

Valleys for onduline roofing. it special elements for the design of internal corners of the roof. When installing valleys, an additional continuous crate is required. Underlayment waterproofing is used to protect against leakage in this place of the roof. And to prevent filling inner corner roofs with debris, it is recommended to use a universal ventilated filler.
To ensure normal air exchange in the under-roof space, it is recommended to install ventilation pipes or special roof fans.
A prerequisite for the proper functioning of the roof is the installation of snow retainers. These parts are installed around the entire perimeter of the roof large area. If the building is being built in an area where the amount of snowfall is insignificant or the roof area is small, then it is possible to install snow retainers only in certain places - above the entrance, windows, drainpipe etc.

So, for the roof device, not only ondulin sheets are required, but also additional component parts, including the ondulin covering the apron. The range of these parts and their number is determined by the design of the roof and its dimensions. Properly installed components of the roof ensure its reliability and extend its service life, protecting the most “problem” places from external factors.

If your house has a roof slope of 5 0 -10 0 (slope 1/11 - 1/6), then you need to make a continuous crate of plywood or boards. The side overlap will be 2 waves, and the end overlap will be 300 mm.

If your house has an angle of inclination of the roof equal to 10 0 -15 0 (slope 1/6 - 1/4), then the crate must be done with an interval along the axes of 450 mm. The side overlap will be 1 wave, and the end overlap will be 200 mm.

If your house has an angle of inclination of the roof exceeding 15 0 (slope 1/4), then the crate must be done with an interval along the axes of 600 mm. The side overlap will be 1 wave, and the end overlap will be 170 mm.

How to get the job done right?

It is necessary that the lathing bars are nailed to the rafters at the correct distances along the axes. To ensure the parallelism of the purlins to the eaves, it is necessary to use a wooden "interval".
Proceed to marking the sheets of Ondulin. For this, it is better to use a colored pencil. To make the marking on a wavy surface as accurate as possible, you can use a sheet trim.
Sheets can be cut with an oiled wood saw. Lubrication will prevent the hacksaw from getting stuck. Cutting can also be done with a hand saw or a circular saw.
Due to the fact that Ondulin is a very light roofing material (the weight of one sheet is 6 kg), the process of lifting and laying sheets on the roof is not at all complicated.
Begin fastening the sheets should be from the opposite edge of the prevailing winds of the roof. The second row of sheets starts with half a sheet. Due to this, at the corner joint there will be an overlap not in four sheets, but in three. This will make installation much easier.
Ondulin sheets must be nailed at the ends of the sheet, at the end overlap, and also on both sides of the side overlap for each wave. After one wave, they are nailed to the intermediate crate bars. 20 nails should be used to fasten one sheet.
In order for the fastening to be carried out exactly along the line of the crate bars, it is always necessary to use a stretched rope.
It is also necessary to start fastening the ridge elements of Ondulin from the edge of the roof opposite from the prevailing winds with an overlap of 125 mm. The ridge element must be nailed to additional crate bars along each of the waves of the sheet joining this element.
For the purpose of designing valleys, special valleys are used. They are attached to an additional crate.
In order to design a roof chip, a special chip or ridge element Ondulin is used.
Chipets can also be issued in the following way. The edge of the sheet is folded over and nailed to the chip board. Fulfill this work needed only at positive temperatures.
With the aim of correct design roof ribs use chip or ridge element Ondulin.
Lateral roof joints vertical walls make out with the help of the Ondulin valley. The joints of the valley with the wall must be reliably waterproofed.
At the end joints of the roof with vertical walls (for example, with a pipe from the furnace), Ondulin covering aprons are used. The joints of the covering aprons with vertical walls must also be reliably waterproofed.
In order to provide the roof with good ventilation, an Ondulin roof fan is used. This fan is nailed along each of the waves at the junctions with the sheets. Over the base of the fan, the top sheet must be overlapped.
In order to provide lighting attic space as well as access to the roof, Ondulin roof windows are used. These windows are nailed along each of the waves at the junction with the sheets. Top of base roof window the top sheet must be overlapped.
In order to close the gap of the sheet in the region of the cornice, the cornice filler Ondulin is used. It is also used to close the gap between the sheet and the ridge element. It should be noted that the cornice filler may or may not be applied - everything is determined by the ventilation conditions of a particular roof.
To provide better waterproofing roof eaves can use a universal cornice box. The maximum overhang of the sheet on the eaves can be 70mm.
For issuance ventilation ducts apply through the roof ventilation pipe Ondulin. It must be nailed at the junction with sheets of roofing material on each of the waves. Over the base of the pipe, the top sheet must be overlapped.
The Ondulin ventilation comb is nailed on the cornice under the roofing sheets. This element The design serves to ensure that birds and insects cannot penetrate the gaps of the sheet.
To metal crate roofing sheets are fixed with self-tapping screws.
For waterproofing the joints of the roof and the chimney, the roof and the roof window (and all other joints of the roof with roof superstructures), it is recommended to use special self-adhesive insulating tapes (for example, Onduflash). This tape is also great for decorating roof valleys. Roof eaves waterproofing can also be improved with this tape.
In roof structures made using Ondulin sheets, it is recommended to use such high-quality lining material as Ondutis as a vapor barrier layer.