In the private or industrial sector, rolls of roofing felt were widely used. I had to make whole fires on the roof, heat the bitumen and then lay the roofing material on the previously cleaned surface.
Everything would be fine, but such a repair, even by the standards of the Soviet era, will be considered relevant for only three calendar years, since the roofing material tends to crack and fail. I had to look for other options in the form of new acrylic or polyurethane mastics, which are also not an ideal option for one reason - they are toxic and do not always meet the stated requirements for roof waterproofing.
To solve this pressing problem, which does not leave anyone indifferent in our damp and dank climate, the builders began to use a new development - liquid rubber, which does not have toxicity, but has all the necessary technical indicators for both stretching and sudden temperature changes.
Liquid rubber in its composition is a rubber that is also made from a bituminous base. It is valuable because it allows flexible application, i.e. it can be coated either with a brush or, when large volumes are available in the form of production facilities, using an air spray gun.
This type of waterproofing is valuable in that no seams are formed through which moisture can penetrate into the interior. Liquid rubber has excellent adhesive properties, that is, it begins to coagulate immediately after applying the composition to a clean roof surface. In addition, it is characterized by extraordinary elasticity and has an exceptional degree of reliability in compression or tension.
But the benefits don't end there. For example, in order for the roofing material to serve its prescribed three years, it is necessary to pour either smooth slag or pebbles on its surface. Such work requires a lot of effort and time. Naturally, all this already dramatically increases the cost of repairing the roof. But the use of liquid rubber in such a type of work as a waterproofing device, instantly solves these problems, since its surface does not need to be covered with anything. Due to its composition, it can perfectly withstand harsh UV rays, frost and precipitation.
If acid rain occurs in the region from time to time, then liquid rubber will serve as an excellent reliable and airtight roof for many years. And to be more precise, 25 years. During this time, you can make a traditional repair 8 times, which will cost much more than using a new and reliable material in the form of liquid rubber.
Good roofing options for baths are metal tiles, corrugated board and soft roofing. A soft roof is great for a bath and, with proper and timely repairs, can last up to 50 years!
Repair of a soft roof is needed much more often than restoration work on hard types of coatings. We recommend every year in the spring to inspect the roofing carpet for defects and damage. Check not only the finish, but also the gutter system, screed and hoods.
We will consider two repair methods:
Traditional repair method: welding
To preserve the appearance and performance of the roof, the coating must be smeared with a special mastic and covered with roofing material every 3-4 years. Thanks to such an easy repair of a soft roof, the panels will be better protected from moisture and temperature extremes.
It is necessary to start repairing a soft roof only in warm and dry weather. At the same time, the coating itself should not be wet - if it has recently rained, it is better to wait a couple of days.
The video shows the main steps:
Necessary materials for the repair of a soft roof:
- Ruberoid or its analogues
- Gas burner or blowtorch
- Any bituminous mastic for waterproofing
Before repair work, thoroughly clean the bath roof, clean storm drains and receiving gutters.
Repair technology:
Damaged areas of the coating must be cut out and, as necessary, the destroyed sections of the screed should be removed.
Do the lubrication in the direction from the top of the roof to the bottom. If it is necessary to put a patch, then it is cut out in such a way that its size is 10 cm larger than the repaired area. The patch is glued to any bituminous mastic.
We fill these places with fresh mortar and seal them with a primer containing rubber. Apply primer in two layers:
- the first layer - as an absorbent coating,
- then the second layer, which should cover the damaged areas with a margin.
Without fail, inspect and, if necessary, renew the roof parapets.
Rolled material is best welded with a gas flame burner, the use of a blowtorch is not particularly effective. Slowly, from top to bottom, go through the entire area of the roof of the bath, fusing patches to defective areas.
The final stage of restoration work is the processing of junctions to dormer windows, parapets, air vents, chimneys, etc. This stage requires special attention.
Do not forget about weathervanes - devices that allow you to remove water vapor that has accumulated above the base of the roof. They are equipped in such a way that one device makes it possible to remove vapors from under the coating within a radius of approximately 8 meters.
It should be said that the main problems of bituminous roofing materials are the formation of cracks, as well as swelling (ie air bags) between their layers.
When a soft roof is overhauled, the cracks are bent back. If this section is located at the junction, the protective metal apron is first removed, then the damaged layer of material is cut out slightly above the crack.
Following this, with the help of a transitional ledge, free the roofing carpet from the backfill or protective layer. Do this to a width of up to one meter from the exposed side. Next, stick 2-3 layers of roofing material, letting it overlap the main coating by 10-15cm. Then replace the protective apron.
If you find air bags between the layers of the coating, free the carpet from the backfill, or the protective material up to a width of 20 cm from the swollen area. After that, with a sharp knife, make a cross-shaped cut along the air sac over its entire width and depth. Bend the edges of the cut, clean the swelling from debris, old bituminous mastic, and if it is wet, dry it. Then apply any mastic, hot or cold, to the defective area, and glue the patch.
Then apply a final layer of bitumen over it and return the bent edges of the roofing to their places. Press them to the base, then seal the area to be treated with a slightly larger patch than the previous one. On this, do-it-yourself soft roof repair can be considered complete.
Disadvantages of conventional repair methods:
Seasonal temperature fluctuations have the most negative impact on the soft roofing. In this regard, the use of obsolete repair methods is not economically profitable and far from rational.
With their application, financial resources for the repair of soft roofs are spent frighteningly regularly. This happens on average once every 2 years and is often accompanied by a local or complete change of the damaged coating. In addition, it is often necessary to reconstruct the roof frame, due to the damaging effects of moisture.
Although bitumen is insoluble in water, it is completely or partially soluble in chloroform, benzene, carbon disulfide and other organic solvents. In other words, bituminous roofing does not have sufficient protection against aggressive chemicals.
Another important factor is that all varieties of bitumen are produced from fossil fuels. Hence the conclusion follows: the use of a burner when we make repairs and install a soft roof in the summer can lead to its ignition.
Due to its physical properties, bitumen is highly deformed in winter, and many large and small cracks are formed. In hot summers, the material may leak, exposing the base of the roof. These problems contribute to the infiltration of sediments through damage to the coating, the formation of air pockets and the accumulation of moisture under the insulation.
Even if you use the latest rolled materials when repairing the soft roof of a garage, house, bath, gluing their joints with bitumen heated by a burner will lead to the same result.
Repair of a soft roof using liquid rubber
Having tried once to repair coatings with liquid rubber, you will forget about such work for a very long time - up to 15 years. This is possible due to the special properties of polymers.
The material can be used on flat and any pitched roofs. The use of liquid rubber is justified from any point of view:
- quality,
- durability,
- security,
- as well as financial benefits.
The composition used, in fact, is a two-component water emulsion on a bitumen-polymer basis. It must be applied using special equipment using the cold spray method.
This absolutely excludes the possibility of fires during the implementation of roofing work and during the subsequent operation of the coating. The composition does not contain toxic volatile compounds.
This method is suitable for both soft tile roofing and rolled roofing.
It should be said about the high elasticity of the resulting coating. The coefficient of its maximum elongation is more than 1000%. When you make repairs to a soft roof, the polymer material hardens almost instantly. This forms a durable rubber membrane that is resistant to both low and high temperatures. And the coating has the ability to "self-heal" and increased adhesion to the base.
The product obtained as a result of the modification transformation of a bitumen-latex emulsion, the composition of which is characterized by resin-like substances and water incompatible with each other in dissolution, is called liquid rubber. The elastic lamellar mass is similar to a rubber coating: the same black, with increased ductility, hydro-impermeable. The last property is especially valuable. That is why the solution is called differently sprayed seamless water insulation, a new perfect building material.
Applications
Liquid rubber for the roof has a wide range of applications:
- Protection against moisture penetration of foundations (groundwater), ceilings between floors; waterproofing of floors (prevents the appearance of fungus, mold), pool tanks, metal, concrete tanks, roofs, etc.
- On complex surfaces with different levels, “steps”. On curly architectural forms, at the junctions.
- In places where there is an increased level of vibration (in particular, near ventilation openings, etc.).
Liquid rubber is indispensable when there is no time for large-scale construction, waterproofing and roofing work: the composition can be applied to the prepared old coating. It should be noted: a seamless smooth multi-colored shell itself can serve as a decorative coating, as well as the basis for further laying piece materials on it.
Main types
Liquid rubber is classified as:
- According to the number of incoming components: one-component (liquid multi-color mass that does not require preliminary preparation, completely ready for application); two-component (consists of hardener and base, requires preparation).
- According to the application method. Painting: the composition in liquid or paste form is applied with a brush, roller, creating a dense protective film, stopping all microcracks. Spraying: the surface is treated with a cold solution from a special installation at an optimal speed. Bulk: a mixture of liquid rubber is prepared immediately before applying the waterproofing protection.
The main advantages of the material
The main "plus" in favor of applying liquid rubber to the roof is a seamless layer, especially at the joints of surfaces of different levels. In addition, the liquid composition fills the smallest cracks and chips.
Interacts with any type of base, has a high degree of adhesion. When working without heating the mixture (cold method), it is characterized by safety for humans. Has no unpleasant smell. Environmentally friendly: water is included in the formulation of the composition. The temperature "corridor" is quite wide: from -45°C to almost +100°C. Due to its high elasticity, liquid rubber is able to take any shape, respond to the expansion of the object, without losing its qualities.
Should be taken into account! If desired, you can choose the composition of any color scheme. However, pay attention to the characteristics on the packaging, where it is indicated whether this type of mixture is indicated for use under UV rays, or sunlight acts destructively on such a surface. In this case, it is recommended to paint the waterproof shell on top with an opaque primer paint.
The coating applies quickly and also dries quickly. Liquid rubber for the roof is characterized by high tensile strength. Even the thinnest, about 2 mm canvas, does not burst, but stretches in different directions. Will not be damaged by chemicals and resists impact loads.
Application methods: the right choice
Before performing work, you should decide which method to choose. It depends on the technical capabilities, the availability of the necessary tools, mechanized means, the type of material itself.
Attention! If you're unsure if you can handle an airless blower sprayer, it's best to do it by hand. The mobile unit automatically mixes the components into one composition in predetermined proportions. Bituminous water-like polymer emulsion is sprayed in the form of a torch under a pressure of about 18 atmospheres with a slit nozzle. A solution of calcium chloride acts as a catalyst and is fed through another nozzle. At the point where the components are mixed, the bituminous emulsion immediately hardens on the treated surface.
The mechanized method not only speeds up the process of applying liquid rubber for the roof, but also economically consumes the solution. The thickness of the covered layer depends on the type of roof. So, for a membrane surface, it will be 2-3 mm, for metal and wood, 1.5 mm is enough. A concrete base will require more: from 3 mm.
Technologically, the waterproofing process can be divided into points:
- carrying out measurements of the processed roof;
- calculation of the required amount of liquid rubber;
- purchase of certified high-quality waterproofing material at specialized points of sale;
- preparatory work on the surface
- applying liquid rubber in one of the ways;
- checking the tightness of the layer; uniformity of application before finishing work on the roof.
Amount needed: how much?
It is necessary to purchase material in such a volume that, on the one hand, it is enough for the entire scope of work and would not have to run to buy the missing mixture in their midst; on the other hand, I don’t want to spend a lot of money on surpluses that are not useful. According to the previously taken dimensions, having calculated the roof area, they are compared with the consumption data, which must be indicated on the packaging of the mixture by each manufacturer.
Important! If for some reason there are no flow parameters, they are guided by the following standards: for a cold type of hydraulic solution per 4 sq. m of the roof area, it is necessary to spend about 1 kg (this is taking into account the two-layer application). Be sure to make an allowance for losses of 10%. The end result will be normal.
Manual application technology
This method is used when it is not possible to rent or buy mechanized installations and with small amounts of work. Then you need to rely on your own strength, performing the application manually with a spatula, roller or brush. Immediately you need to set yourself up for the fact that the processing process requires some effort, time and patience. But it is not difficult and accessible to everyone.
The surface to be treated can be brick, concrete. Membrane and metal base is allowed.
In this case, the application of liquid rubber to the roof is performed in the following order:
- For work, choose a fine day, but not hot, with a temperature of at least 5 ° C.
- Bring the surface to the desired view: all objects on it, garbage are removed. Exfoliated layers are removed. If necessary, the base is repaired using a cement-sand mixture, etc. If the roof is restored, originally covered with rubber waterproofing, then the damaged area is carefully cleaned with emery cloth, after which the composition is applied to this place and immediately equal to the same level with the roof surface.
- If there are oil spots, grease residues, it is better to remove them, thus ensuring better adhesion of the rubber to the base, and then rinse.
- Dry well.
- The tool is being prepared: a roller or brush should be with a wide base.
- Consistently, a cold solution 3-4 mm thick is carefully applied to each small area. With the hot method, the composition is first preheated in dosed portions to somewhere up to 230 ° C, then naturally cools slightly to 150-160 ° C and is immediately applied in this form. This stage is also called priming. If during the preparation somewhere there are areas with contamination in the form of dust, then priming completely frees the surface from them.
- Layered coating involves, after the formation of the first layer, to wait about 10-15 minutes until it seizes with the base, and the polymerization processes end in the rubber itself.
- In the same way, a second, and if necessary, a third layer of the solution is applied. In this case, special attention is paid to the places of height differences, voids, chips and cracks. Using a spatula, the surface of the roof is leveled.
- After waiting for the complete drying of the last layer, you can proceed to the further formation of the roof: applying the finish coat.
Using a mechanical installation when applying liquid rubber
If the manual method with a cold coating requires thorough work, does not require speeding up the process, then hot waterproofing should be done at an accelerated pace so that it does not have time to harden. This requires a certain skill.
- Properly prepare mobile equipment, check its completeness.
- Install a container, pour a solution of calcium chloride (CaCl2).
- Fix both containers (with CaCl2 and liquid rubber) on the sprayer.
- Performing a uniform supply from both tanks, apply the finished mortar 3-4 cm thick perpendicular to the treated area evenly, without gaps, on the roof. The optimal distance at which the spray nozzle should be from the roof is about 0.4 m. A convenient holder will allow you to apply the mixture in the most inconvenient places at high speed.
Polymerization processes under normal environmental conditions (temperature about 20-25 degrees and humidity 50%) are completely completed on the third day after treatment. After the completion of the work, a solid monolith is obtained, which will serve properly, performing its functions for at least two decades.
The performance of a flat roof is largely dependent on quality.
Specialists in the field of advanced roofing technologies, having set themselves the goal of significantly increasing the turnaround time for the roof, received an innovative material as a result of research - liquid rubber.
It meets all the necessary requirements and is considered the most effective and reliable way to ensure water tightness.
Due to its excellent adhesion, liquid rubber is suitable for any type of base: it is applied to a concrete screed, wooden flooring and even to old roofing material.
Moreover, the roof can be with the most complex relief, a large number of complex nodes - the method of applying waterproofing allows you to create a seamless monolithic surface of any shape.
Flat roofs can be:
- . Waterproofing such a roof is the most important part of the arrangement, allowing you to use the space to the fullest;
- lightweight. Ensuring complete watertightness contributes to the growing popularity of lightweight flat roofs, which give the building a modern look. There are a huge number of projects of such houses - the variety of styles is most clearly represented in private buildings.
For many years, a waterproof barrier should provide comfort and coziness to the inhabitants of the last floor, protecting it from moisture penetration. And on the roof, in the meantime, you can equip a sports ground or recreation area.
What is a material?
Liquid rubber is obtained without the use of solvents.
To produce a bitumen-polymer emulsion, the smallest particles of molten bitumen are mixed with water and polymers, as well as various plasticizers.
A coagulant is also needed - a hardener.
Bitumen-polymer water emulsion is applied cold.
In the process of spraying onto a flat roof using special two-channel equipment, two solutions (emulsion and hardener) are mixed, and immediately the liquid mass hardens, forming a reliable waterproofing membrane - a rubber-like seamless coating.
Strictly speaking, there is no rubber in the composition of the material, therefore sprayed waterproofing is not rubber in the usual sense and got its name due to properties such as elasticity and stretchability.
- one-piece cover provides absolute tightness. Seams - the most vulnerable points of any waterproofing - are absent here;
- adheres well to almost any surface, including old waterproof coatings;
- has excellent elasticity;
- has high tensile strength;
- does not crack, does not crumble, does not become brittle at low and high ambient temperatures - this makes it possible to use bitumen-polymer emulsion in regions with difficult climatic conditions;
- provides anti-corrosion protection;
- can be used on inclined surfaces;
- work is carried out quickly - according to experts, two people can cover up to 1,500 square meters in one day. m.
Disadvantages of liquid rubber:
- certain installation difficulties - application is carried out using a special technology, as well as in certain weather conditions;
- not solvent resistant.
It is possible to apply a coating that protects against water only in the absence of precipitation and temperatures from +5 degrees - the composition of the two-component waterproofing includes water that can freeze.
After hardening, negative values, as well as temperature changes, will not be terrible for the coating: without loss of quality, the material will last 20 years or more.
The thickness of the sprayed layer is only 2 mm, but it will be a mistake to believe that several layers of roofing material are more reliable than a modern membrane.
A slope-forming layer is formed on the roof - it can be small, 2 or 3 degrees - this is enough so that water does not accumulate in the center.
The process of waterproofing a flat roof with liquid rubber includes several mandatory steps: cleaning the surface of the base from all kinds of debris, applying a primer and directly spraying liquid rubber.
Roof cleaning and priming
The compressor cleans the entire surface of a flat roof.
The method of cleaning with pressurized water is also effective, however, after such cleaning, the roof base must be thoroughly dried.
Freshly poured concrete is polished to remove the top layer.
The spraying of the waterproofing layer is carried out:
- in a mechanized way - with the help of special equipment;
- manually - all the necessary components are mixed, and the liquid composition is applied with a brush, roller or spatula.
Roof repair
The material is also indispensable in the reconstruction of the roof. The old roofing carpet made of rolled materials can not be dismantled if it is in a satisfactory condition.
For junctions, it is necessary to reinforce liquid rubber with geotextiles.
In order for the waterproofing layer to last longer, it is recommended to cover it with a special water-based or organosilicon-based paint - for additional protection against ultraviolet radiation.
Any building needs waterproofing, which is used for the base, walls, roof and other elements. It is the roof that requires special protection, for which liquid rubber is increasingly being used.
Peculiarities
Liquid rubber is a modern material that has excellent waterproofing characteristics. Such material is created on the basis of latex and bitumen emulsion. Liquid rubber can be used for roofing as a protection or self-covering.
After application, the rubber begins to harden in a short time, turning from a liquid material into a solid, elastic membrane without seams and joints. Such material can be used in various areas and roofs with complex structures. Liquid rubber cannot be compared with other types of waterproofing. This can be easily verified by examining its advantages.
Pros and cons
Roofing liquid rubber has a number of advantages and disadvantages. Acquaintance with this material will not be complete if you do not study these two sides.
The list of pluses consists of the following points:
- uniformity and solidity of the coating, the absence of seams and joints;
- achievement of maximum adhesive characteristics regardless of the coating material: concrete surface, wood or metal;
- filling with liquid material of small surface defects simplifies the preparation stage;
- elasticity allows the liquid rubber coating to increase in size and return to its original parameters. This advantage becomes relevant with temperature changes and changing seasons. Cracks do not form on such a coating, which makes it possible to call it durable and hardy;
- the use of a mechanized method of application reduces the time of installation work and improves the quality of application. Fast and high-quality installation is especially relevant when processing convex and complex elements;
- environmental safety and the absence of toxic substances in the composition;
- extensive scope of application includes residential facilities, industrial and commercial complexes;
- the possibility of using a finishing coating and creating a base area that can be used for further operation;
- a large number of shades and textures opens up huge opportunities for aesthetes and designers;
- easy repair, requiring a minimum of time and finances. The possibility of repairing a small area without affecting the main area.
To this impressive list of advantages, the following disadvantages are added:
- the need to use special equipment for applying liquid rubber to the roof;
- high requirements for the surface preparation process;
- the presence of requirements for environmental conditions that must be maintained throughout the installation work;
- the difficulty of dismantling a coating created from liquid rubber.
Varieties
The market for liquid rubber for roofing is actively developing. Already now there are many varieties of this material, which makes rolled materials no longer relevant.
Classification can be based on various principles.
- One-component material has a liquid consistency, low viscosity. The color palette is varied, which opens up great opportunities for choice.
- A two-component mastic liquid roof, in addition to the main components, also includes a hardener. The components are mixed immediately before application to the surface.
- The sprayed material is still recognized as the most promising due to its high quality and quick installation. Definitely requires the use of special equipment.
- Painted rubber is available in a wide range. It can be liquid and pasty. After hardening, it forms a film on the surface. Installation is carried out using a hand tool.
- Self-leveling roofing is an economical option and is usually used before installation of the coating. The material is simply poured onto the prepared surface and leveled with a special hand tool resembling a mop.
- Hot rubber is more suitable for bituminous surfaces. The seamless surface provides reliable protection for the roof and the building as a whole.
- The cold material in the composition has a solvent, is more mobile and convenient for installation. With such material you can work independently. On hand you need to have gasoline or kerosene, which may be required to dilute the rubber.
- Ureplen was developed recently by the military-industrial complex. Initially, such material was used exclusively for the military and defense industries, so its characteristics are at a high level. It can be used equally on flat and sloped roofs.
- Liquid rubber can have a different base, bitumen and polyurethane foam are most often used. The second option is more innovative, durable and hardy. Although bitumen is not going to go by the wayside yet, as it is a proven, affordable and high-quality option.
How to choose?
At the time of purchase, you must carefully examine the liquid material. Large elements cannot be present in its composition, waterproofing must be uniform, homogeneous and smooth. Otherwise, when laying the surface will not be smooth and of high quality. The packaging label must have a stamp corresponding to GOST. It is necessary to pay attention to the expiration date and the integrity of the package. If there is even the slightest doubt, it is necessary to refuse the purchase.
Different materials can be applied in different ways. Each manufacturer puts on the packaging recommendations for use and the required thickness at which the material will provide adequate protection. Do not deviate from these recommendations.
To determine which rubber is the best, it is worth studying the market offers. It is better to give preference to well-known companies that have managed to earn the respect and recognition of the consumer.
Manufacturers
Many companies are engaged in the production of liquid rubber. There are both domestic and foreign representatives among them. It is easy to get lost in such an assortment, so you should pay attention to the most popular and worthy manufacturers, whose products will not be a disappointment.
- You should start with a Russian manufacturer, or rather, with a whole group of companies "Partner-Story". It supplies the market with several products at once: Euromast, Euromast Plus and Euromast Color. These products are chosen for high quality, reasonable cost and a large assortment.
- At the company's production facilities "Rise" high-quality liquid one-component rubber is produced "Blockade". Such material fully complies with international standards that apply to waterproofing materials of this type. Pleased with an acceptable cost, which overshadows the products of many manufacturers. The company offers discounts for bulk orders.
- Another worthy domestic manufacturer is the company "LKM USSR". It is engaged in the production of a wide range of polymeric protective materials, including liquid rubber. These products are widely used in the construction of the industrial and civil sectors of Russia. Waterproofing is produced on the basis of developments that were created for the military-industrial complex of the USSR, and for a long time remained classified. Liquid rubber is based on bitumen, which is ideal for waterproofing protection of various types of surfaces.
- Organization "Synthetic Polymer" is part of the company Nippon Ace, which is engaged in the production, development, promotion and sale of polymer compounds. These materials are off-season water-displacing compositions that have a wide range of applications. There are no analogues of this product, none of the existing manufacturers yet produces such material.
Application Equipment
For high-quality application of the material, it is necessary to use special equipment. As such equipment, a mobile spray gun is mainly used. Its preparation is the first stage from which rubber spraying begins. The pulverizer mechanism consists of a dispenser and a mixing device. In most cases, gasoline is used as fuel, not electricity. This feature ensures mobility, compactness, autonomy and ease of use. With this set of features, work is possible even in hard-to-reach places.
And also the mechanism includes a long hose, the length of which can reach 150 meters. Due to this, during the installation process there is no need to constantly move the device around the roof area. The environmental friendliness of the material allows you to do without personal protective equipment, even when working indoors.
Instructions for use
When processing the roof with liquid rubber, it is necessary to strictly adhere to the application technique.
Otherwise, the end result may be disappointing.
- For work, you need to choose dry weather with an air temperature above +5 degrees.
- The base must be carefully prepared for further work. The essence of this stage is to clean the working surface. There should be no pollution left, not to mention rubbish. In the process of purification, a powerful pressure of water or burning can be used. The latter method is applicable for greasy and other difficult stains.
- Priming is the next stage, the essence of which is to create a primary layer of waterproofing on the prepared surface. The device of the future roof directly depends on the quality of priming, so you need to take this stage seriously. The result of this stage will be the elimination of the smallest particles of dust, contaminants invisible to the eye and ensuring maximum adhesion between the surface and liquid rubber.
- The installation technology is completed by applying liquid rubber by spraying. It is necessary to strive for uniformity of the layer. It will be easy to do this if you observe a right angle between the base and the atomizer. And also you need to adhere to the same distance that will be maintained between the base and the extreme point of the sprayer.
- The constituent materials of the solution are mixed directly during spraying. For this, the equipment has a special compartment. The width of each strip should be within 1–1.5 m. The transitions should be cross-shaped.
- On flat roofs, several layers are sprayed, their number can be up to three.
- Armature must be present. For this purpose, geotextiles or fiberglass can be used.
Consumption per 1 m² with a layer thickness of 2 mm is 3 liters of liquid rubber. The solidification of the material depends on external conditions. At an air temperature of +20 degrees and a humidity of not more than 50%, it takes three days to completely solidify. Liquid drops may appear on the surface, which is normal. The reason for this phenomenon is the work of the catalyst.
Loading...