Waterproofing concrete roofs

For buildings to be long-lasting and protected from water damage, concrete roofs must be waterproofed. Despite its durability, concrete is porous and can absorb water over time. If it is not properly sealed, this can cause structural problems. In addition to preventing leaks, effective waterproofing increases the building’s overall efficiency by preserving its structural integrity.

Applying specialty coatings or membranes is one of the main techniques for waterproofing concrete roofs. The purpose of these materials is to form a barrier that keeps water out of the concrete substrate by repelling it. The composition of coatings can vary, from polyurethane-based solutions that offer strong resistance to weathering to elastomeric compounds that expand and contract with temperature changes.

Preparing the surface before using any sealants is another essential step in waterproofing concrete roofs. It is imperative to ensure that the waterproofing materials adhere to the concrete surface properly by cleaning and repairing any cracks or imperfections. This prepping process prolongs the life of the roof by strengthening the bond and lowering the possibility of further water intrusion.

For waterproofing systems on concrete roofs to remain effective over time, regular maintenance and inspection are essential. Examining the area for wear, blistering, or cracks enables early identification of possible problems before they become more serious and require expensive repairs. Furthermore, reapplying waterproofing coatings or treatments on a regular basis can strengthen defenses against environmental elements like UV rays and harsh weather.

Importance of Waterproofing Ensures long-term protection against water damage
Types of Waterproofing Membrane, cementitious coating, liquid-applied

Waterproofing of a flat roof: an overview of suitable materials and methods of installation

The flat roof is flat and the surface is located almost horizontally. Thanks to this, the developer receives a lot of advantages, primarily related to the ability to equip an additional functional zone on the roof – a terrace, a cafe, a summer garden, etc.P. Compared to the pitched analogues, flat roofs are cheaper, easier in design, it is easier to mount and maintain them. But they have a significant drawback – a tendency to leaks. Their cause is a too small slope of the surface of the flat roof (up to 12 °), not allowing rain and melting snow to drain along it as intensively as in inclined slopes. Therefore, the waterproofing of a flat roof is an important, you can say a key, the stage of its construction.

The role of waterproofing in the composition of the flat roof

We discovered that the flat roof will proceed in the absence of a properly equipped waterproofing system. But that’s just the tip of the iceberg—the water seeping from the ceiling. There are actually a lot more negative effects. Permeation of moisture into the subcutaneous space:

  • destroys the base of the roof (concrete screeds and plates are crumble, wooden crate rot, metal components are corrosed);
  • with the insulated roof – the thermal insulation layer, worsening its properties, and destroying the structure;
  • flows down the walls, contributing to their wear;
  • leads to an increase in fungi and mold, which give a persistent smell of dampness in the house, and in some cases they pose a threat to human health.

When waterproofing is installed correctly, it forms a barrier that stops moisture from penetrating the roof’s layers and causing the aforementioned circumstances to arise.

The correct location of waterproofing

The waterproofing layer in the roof pie is positioned at different levels depending on the kind of flat roof (traditional or inversion).

The waterproofing is situated above the insulation in the typical roof structure. In this instance, the hydraulic barrier serves as both the roofing and the barrier if the structure is not explosive. However, traditional roofs are frequently used. The protective layer is then added on top of the waterproofing, such as a terrace board, tiles, asphalt concrete, etc.

The inversion, or inverted, roof has another arrangement of layers. The insulation is placed on top of the hydraulic tank when the layers are turned over, shielding it from the effects of sunlight, moisture in the air, and abrupt temperature swings.

What materials are suitable for waterproofing?

A flat roof necessitates a slightly different approach when choosing waterproofing materials than a pitched roof because of its structural characteristics. There should be no exposed seams, homogeneous, continuous moisture protection. The most popular coatings are as follows:

  • rolled bitumen materials (ordinary roofing material and its modern modifications);
  • polymer membranes;
  • mastic;
  • sprayed waterproofing (liquid rubber).

Choosing a waterproofing option for a flat roof requires some thought, so let’s see how to seal them.

First material: bituminous roller coatings

The most well-known member of this category is a common roofing material called construction cardboard that has been bitumen-saturated. Since this choice falls under the budgetary category, it is frequently used to cover roofs for a variety of uses. Regretfully, it rarely lives longer than seven years. This results from the bitumen’s inadequate resistance to temperature fluctuations during use.

The bitumen component melts in the heat and cracks in the winter. Water seeps through the cracks in the cardboard, which acts as the material’s reinforcing base and swells and destroys in this situation. A new coating must be applied. But the roofing material is easy to install; all you have to do is lay sticker rolls over bitumen mastic.

There are updates to the standard roofing material, such as more contemporary variants with varying improved lifespans and levels of quality. Properties-wise, rubberized materials are most similar to roofing materials because they are based on roofing cardboard and, less frequently, glass chief.

The bitumen layer applied to the base on both sides is thicker than with roofing material, which is the primary distinction. Rubles can be installed in two different methods: thermal fusion, which involves melting the lower cover layer of the gas or liquid fuel burner, or sticking them to the roof with mastic. Watch this video to see how roll waterproofing melts on a flat roof:

The most advanced variant of Euro-Ruberoid roofing material also comes with salarying rolled materials. Polyester or decay-resistant fiberglass (also known as steel-fiber or fiberglass) are used as internal "reinforcement". Moreover, the impregnation alters.

Rubber and plastic wax are examples of polymer-modified bitumen, which is used in place of regular bitumen. With all of these enhancements, Euro-Ruberoid is now more elastic and resilient to changes in temperature as well as mechanical and atmospheric forces. Its lifespan is thus extended to 15–30 years.

The first step in installing bitumen roller coatings is to prepare the roofing base. It is aligned and free of trash. The roll material was then primed with a primer, which is a liquid bitumen mixture that forms a layer. The direct waterproofing installation process starts after the soil has fully solidified.

  • On the part of the roof surface, along the length of the roof line, apply a layer of adhesive mastic.
  • The edge of the panel is glued to mastic, then the roll is gradually rolled, straightening the material from the middle to the edges. Thus try to avoid the appearance of air bubbles.
  • The edges of the canvas are smeared with a spatula.
  • Roll the canvas with a rink, tightly pressing it to the surface.
  • The next strip is glued over (8-10 cm) to the previous one, mastic is applied at the place of contact for gluing layers for gluing.
  • The rest of the panels are glued similarly.
  • The second is laid on top of the first layer of roofing material, and, if necessary, and subsequent layers.

In the event that you employ melted bitumen:

  • Put a roll in front of them so that walking along it, rolling forward.
  • The lower layer of the roll and the surface of the screed soaked in the primer are heated by the burner, 20-30 cm long. During the sheet heating, the indicator film burns and the adhesive surface of the waterproofer “boils”.
  • The heated sheet is rolled out by half a wag and glued to the base of the roof, straightening all the swelling and folds.
  • Roll the glued part of the canvas with a heavy roller.
  • Similarly, heated and glue the next section, gradually rolled out and glue the entire roll in the same way.
  • The second panel glue over 5-8 cm, after cooling and gluing the first.
  • Gradually overlap the entire roof in the same way.

It is advised to install roofing material in four to five layers to protect the roof from moisture. Because Euro-Ruberoid is more affordable, the coating it produces typically consists of two layers: an upper and a lower layer.

Second material: polymer membranes

Polymer membrane waterproofing is a more cost-effective and long-lasting solution for roof waterproofing. These are elastic canvases composed of materials resistant to moisture and polymers.

Membranes are utilized in the inversion roof as layers within the roof pie and as final roofing coatings because of their unique properties.

Depending on the foundation, there are three primary types of membranes: TPO, EPDM, and PVC.

  • PVC membranes are called elastic canvases made of plasticized PVC. As a rule, their structure uses reinforcement from polyester threads, which gives the final product resistance to ruptures and punctures when stretching. A distinctive feature of this option is increased fire resistance.
  • EPDM membranes are made on the basis of artificial rubber, sometimes with polyester reinforcement. The reinforced version is designed for waterproofing roofs in areas where strong winds and precipitation are possible. EPDM membranes cannot be called an innovation, they have been used in construction for 40 years. Differ in high elasticity and small weight (1.5 kg/sq.m.).
  • Based on rubber (about 70% of the composition), TPO membranes are also made, only they also contain polypropylene (30% of the composition). For reinforcement, a polyester grid is used. TPO canvases are characterized by increased durability and environmental friendliness.

There are three methods for mounting the membranes to the roof’s base: mechanical, ballast, and adhesive. The membranes are either bonded together or heated air welded together (self-adhesive bilateral tapes are typically used for EPDM membranes).

This is the most popular method for installing polymer membranes of all kinds, and it is especially advised for light roofing structures (like roofs supported by beams). In parallel, the membranes are welded (glued) into overlap with each other and fastened to the base using linear rails or specialized telescopic fasteners.

The following steps are taken to form the roofing carpet:

  • turn and spread the first strip of membranes on the roof;
  • along the perimeter, the strip is fixed with telescopic fasteners;
  • The next canvas is laid with a redundancy of at least 12 cm to ensure a complete overlap of fasteners on the previous sheet;
  • The seams of neighboring panels are connected by welding (less often – adhesive method);
  • The rest of the membrane panels are similarly.

The mechanical system’s advantages are its light weight and quick styling. Using this option of fastening from a metal profiled sheet in the presence of a base is the simplest.

The method for installing ballast

The technology’s basic idea is that bulk or piece materials act as loading to keep the membrane canvas attached to the roof. Pebbles, gravel, paving slabs, Decing, etc. are a few examples. P.

  • The canvas of the membranes is unfolded and stretched over the surface of the roof, spreading it freely, without tension;
  • The adjacent panels are placed with overlap, as a rule, it is 8-10 cm;
  • In the places of the formation of the seams, the panels are welded or glued together;
  • Mount telescopic fasteners – along the parapets, around ventilation mines, funnels, pipes and other protruding parts of the roof;
  • Disable geotextiles (a separation layer used to protect waterproofing from damage);
  • evenly distributed ballast along the canvas.

The ballast system offers enhanced atmosphere resistance, high installation speed, and efficiency. The drawbacks include low maintainability and requirements for the roof structure’s bearing capacity (it must be able to support the ballast’s substantial weight).

The installation technique using adhesive

The least popular and priciest system is the adhesive one, but because of its little weight, it can occasionally be indispensable. Fit for roofs with any level of complexity. The membrane will be fixed in this installation version using bitumen mastic or installation glue.

Gluery uses technology in its operations:

  • The membrane is rolled from the edges to the center;
  • glue is applied to the base (wood, concrete, solid thermal insulation, metal, old membrane or bitumen roof);
  • On a glued base, they roll the membrane and immediately smoot it;
  • The next strip of the membranes is glued with an overlap at least 8 cm;
  • The rest of the stripes are also glued.

Benefits of this technology include its strong wind resistance and ability to use intricate roof configurations.

Mastic, the third material (coating waterproofing)

Hydrophobic mastics applied to the roof’s base can be used to waterproof the structure. Consequently, an elastic seamless coating that is impervious to water is produced.

Depending on the composition, masts are:

Mastic is classified as cold or hot based on the temperature ranges in which it softens and hardens.

Mastics that are hot must be heated to 160 °C before they can be used; those that are cold can be used right away and do not need to be heated further. However, even cold mastics need to be heated to 70 ° C when waterproofing is being done during the cold season (below 5 °C).

All of these substances are applied as liquids, and they solidify when air touches them directly on the roof. They are applied in multiple layers using a brush, spatula, roller, rocket, or brush. Fiberglass is layered between the layers of mastic to reinforce the mastic roof and increase the coating’s strength and durability.

Material #4: Liquid rubber or sprayed waterproofing

Applying rubber-bitumen emulsion, also known as "liquid rubber," to a flat roof’s surface is one of the most contemporary methods of waterproofing. This is due to the fact that the surface created by spraying has properties similar to those of rubber, such as elasticity and water-repelling properties.

Liquid rubber is fundamentally a cold mastic based on an emulsion of bitumen and water polymer. It doesn’t release any hazardous compounds when it is rejected and doesn’t contain any solvents.

One continuous layer of material, three millimeters thick, is applied to the surface at a time. This requires the installation of airless spraying, which calls for specialized equipment. With its assistance, you can cover 1000 m 2 of roofs with liquid rubber in a single day. Large commercial building roofs are advised to use sprayed waterproofing because it is very advantageous for high volumes. particularly if the roof has a lot of pipes, parapets, antennas, and other protrusions. Liquid rubber is more convenient to use than any other roller material on roofs with intricate configurations.

By being aware of the characteristics of various waterproofing materials, you can select the one that best suits your needs and a particular flat roof. However, it has the ability to independently select and apply the waterproofing system!

A thorough evaluation of every possibility will determine the best materials for waterproofing a flat roof. Detailed instructions for self-contained installation work.

Waterproofing of concrete roof: possible options

Concrete is widely used for ceiling installation in individual buildings, particularly when adding auxiliary rooms. It is used as a monolithic filler for formwork or stove. This article discusses how to waterproof the roof of a concrete garage or outbuilding.

Defense against the finish overlap’s water: this is a crucial moment. The accuracy of the work, the ceiling’s lifespan, and the building as a whole will all affect the room’s climate. What supplies can be used, how does roof waterproofing happen, how work is done, and what mistakes need to be avoided?

Preparation of a concrete surface

The characteristics of the primary material won’t alter regardless of how a horizontal concrete roof is assembled. Any overlap of concrete needs to be cleaned, revealed (tie the structure), and moisture-proofed.

Such a garage roof needs to be processed in advance of applying a waterproofing layer. After the surface has been cleared of debris and dust, a primer should be applied.

Primer is a material with a price based on polymers that attach molecules of frozen concrete together by penetrating deeper. Both organic and inorganic primers are possible.

The types of material that follow are divided based on the basis:

As the table indicates, depending on the condition of the concrete overlap and waterproofing material, the roof should be treated with either polyurethane or epoxy primer. Use a primer made of the same composite material if you are painted or covered in rubber. If additional external thermal insulation is installed, the primer is applied prior to the garage roof being warmed.

The process by which the layers of the concrete roof form

When working with flat roofs, polyurethane primer is the most preferred option.

It can also be applied to remove small surface imperfections.

The following are the particulars of processing with such impregnation:

  • Concrete should be absolutely dry, at least 28 days from the date of filling,
  • The ambient temperature should ideally be in the framework of +5 0 s – +18 0 C.
  • Air humidity of at least 70%,
  • Application should be generous, in 2 layers.

You can start the waterproofing process after the concrete base has been leveled and impregnated.

Types of waterproofing materials

A wide variety of waterproofing options are available from modern manufacturers.

But it doesn’t matter what kind of waterproofing is used. While deciding how to cover the garage roof with concrete, you should consider the practicality of the application in that specific situation as well as the operational features.

The following characteristics of the waterproofing material should be present:

  • high degree of elasticity for ease of installation, improved covering ability and in order to ensure resistance to wear;
  • high level of thermal insulation;
  • sufficient strength;
  • long service life (at least 15 years).

In the event that the final product is chosen, you should also consider how resistant it is to the damaging effects of chemicals. The price is not the deciding factor when selecting the material.

Materials for liquid waterproofing

Penetrating primer and coating materials (all varieties of mastic) are included in liquid waterproofing. Liquid compositions have the major benefit of being compatible with all kinds of roofing materials and able to be applied to any relief’s surface.

All compositions have one thing in common: they’re easy to apply, so you can arrange waterproofing with your hands. Unlike roll or leafy material protection, the waterproofing layer is arranged based on liquid material and does not have seams. When using liquid insulation, the concrete surface is consistently protected by a monolithic coating.

Bitumen resin-based composition for plastic adhesive. Occasionally, different polymers are added to enhance its qualitative attributes. Seldom used as a stand-alone source of information. To enhance cluting, it is typically used in composition with roll or leaf insulation.

It is separated according to how it is applied to:

  • Hot: the source material has a solid shape, he is heated before use and becomes liquid.
  • Cold: produced in thick liquid form, before use should be diluted with a solvent.

The benefits of asphalt mastic

  • Service life: over 25 years;
  • Excellent adhesion: the material does not exfoliate even after a long time;
  • low cost.
  • melts at high summer temperatures (walking on such a roof is not recommended);
  • not used as an independent material;
  • applied in several layers because of which the surface processing time is greatly increased.

It is comparable to bitumen material in general, but with better quality attributes. It is practical for handling small-area roofs, and work can be done both during the building phase and while the structure is in use. resistant to the harsh chemicals found in gasoline and solvents.

Large-volume buckets are used to sell polymer mastics.

  • short drying time;
  • resistance to temperature differences;
  • absolutely do not miss moisture.

The only drawback to this material is its high price.

It is composed of two components. Because of the peculiarities of application, professional builders typically use it.

Three applications are possible:

  1. Spraying: gives a high -quality monolithic coating. It is necessary to use special equipment (in the photo below).
  2. Painting: applied with a spatula or brush.
  3. Pouring: poured to the surface and accelerated by a spatula.
  • The service life is up to 50 years;
  • high adhesion;
  • excellent elasticity;
  • it is possible to use as a finish material.

The only drawback is how hard it is to apply.

This kind of isolation was covered in the primers at the beginning of the article. Though bitumen mastic can be successfully replaced with epoxy or polymer penetrating compounds, they can only be used very conditionally for full waterproofing.

Sold in firmly closed containers with application instructions on the label. You must arrange a finish layer before using them. Vapor permeability, surface processing speed, and notable surface strengthening of the concrete are the primary benefits.

Advice: Apply primer to the roof’s inside and outside surfaces to create a breathing overlap that will shield the interior space from moisture and the elements.

Rolled or sheet waterproofing

Because rolled materials are more elastic, laying is made easier. If there is a large annual temperature difference, then such materials ought to be selected. Under the influence of high temperatures, waterproofing composed of covered materials does not alter its physical or chemical properties and provides additional thermal insulation.

Compatible with nearly all of their preferred roofing materials, some roller materials can be used as a finish roof without the need for extra finishes.

EPDM membranes (ethylene-propylene-dyenny monomer)

Sheets that are waterproof thanks to rubber. It contains ethylene-propylene-a-dine monomer, as the name suggests. A polymer net is used to reinforce the material from the inside, giving it more strength. Use of the material is advised even in severe weather conditions.

  • The elasticity of stretching is 400%, which makes it possible to lay material on complex roof reliefs.
  • Fast installation. Rolls up to 15m and long up to 60 m allow you to cover a large area in a short time.
  • Not a large mass of material, which simplifies work with it (1m2 weighs no more than 1.5 kg).
  • Long life.

Cons: You have to device the docking seam if you can’t close the roof with a single roll. The connection may collapse if the seam is not meant to vulcanize but rather to glue. In comparison to other insulating materials, the material also costs the most.

The structural components of a PVC (polyvinyl chloride) roll membrane are a polyester grid serving as the reinforcing base and plasticizers as the filler. The material’s flooring is overlapping, and the burner strengthens the joints. The strength of the stitches exceeds that of the coating.

While the benefits are similar to those of EPDM membranes, there may still be a lower cost. Resistance to chemicals found in active substances such as bitumen, solvent, gas, and oil is not the primary drawback.

Possibly the most well-liked content right now. Fiberglass or fiberglass can be used as the foundation, and the material comes with protective film and sprinkle on both sides.

Because of its fragility, the fiberglass-based solution is only appropriate for short-term waterproofing (current temporary repair). The fiberglass-based euro-ruler is set down for extended use. Only as a gasket is film material utilized. The roof’s finishing touches are sprinkled rolls.

  • small weight;
  • long service life (more than 30 years);
  • resistant to chemicals;
  • perfectly tolerates physical activity;
  • has good refractory properties.

It is flawless. When purchasing, keep in mind that the material overlaps and that the junction is at least 10 cm wide.

A time-tested, traditional method. The most affordable and disposable over time. A typical roofing system consists of multiple layers, with the roll center displaced to half its width. Layers "glue" together using regular bitumen. Cheap and long-lasting is the coating.

To sum up, it should be mentioned that the complex uses roll and liquid insulation, which is used by experienced builders. For concrete roof waterproofing, for instance, sheets or rolls are used for the main area, and liquid compositions are used for processing areas that are difficult to reach or for repair work.

A crucial moment is when the finish ceiling is shielded from the water. The quality of the work and the product’s lifespan will determine the interior climate.

How to make a waterproofing of a flat roof properly?

A flat roof must be waterproofed in order to shield it from the damaging effects of atmospheric precipitation. Neglecting this crucial step could result in the building’s integrity being destroyed in addition to the roof. As a result, all roof waterproofing work needs to be done while the building is still underway and not after a few years.

Types of flat roof

Although operational, flat roofs are not profitable. In contrast to the first option, the second one does not offer a stiff base on which to apply a waterproofing layer. For such a roof, soft heat insulators are typically utilized as a heater. On buildings where routine roof maintenance is not necessary, nonexplosive flat roofs are constructed. And their design is a specific pie made up of a metal sheet or concrete slab, rolled materials for the finish coating, and insulation.

An enhanced form of the conventional roof is the operated flat roof. Such a roof has a sturdy base that can support the loads incurred during maintenance. Underneath the insulation on an operable roof is the waterproofing layer that shields it from variations in temperature, mechanical harm, sunlight, and freezing cycles. Naturally, this results in a much longer roof’s lifespan.

Materials for waterproofing flat roof

Every kind of flat roof requires the same methods and supplies for waterproofing. PVC membranes, roofing material, and rolled-melted and polymer-bitumen materials are the materials that builders most frequently use for this purpose. Furthermore, bitumen waterproofers can be used; in particular, there are new bitumen-polymer options with improved technical characteristics, high elasticity, and base strength. Among them are:

Preparation of the roof for laying (application) of a waterproofing layer

Regardless of the material you decide on to waterproof the roof, the foundation must first be prepared before applying the material.

Using a compressor is the most efficient way to remove trash from the roof quickly and thoroughly. However, caution is necessary in this situation. It is a good idea to put in special screens around the roof’s edge to keep debris and dust out of the way. Simply push dust into one corner with the compressor, and then use a building vacuum or regular broom to get rid of it.

You must use hard wire brushes or a drill with a nozzle to clean the roof’s surface at the plate joints and fasten various pieces of equipment (antennas, ventilation mines, etc.). And you can rinse the roof with a high-pressure car sink to finally save it from everything unnecessary. It is true that the roof will need to be fully dried after such a process.

Important: It is not advised to use the sink if the old roller coating is installed on the roof and you are unable to remove it because some water and trash will unavoidably be underneath the coating, compromising the waterproofing layer’s quality.

Cement milk needs to be removed if the flat roof waterproofing is done on a concrete foundation. Using grinding is the simplest method for doing this. By removing the top layer of concrete, this technique will open its pores, which become clogged again after applying waterproofing.

Furthermore, it’s imperative to inspect the roof for flaws. If you discover cracks, you will need to use a traditional cement-sand solution to clean and restore them. Pay attention to any bubbles that may form; these indicate the presence of moisture beneath a finish coating layer. If these bubbles are simply sealed with roll material or liquid rubber, the water will remain trapped inside the "pie" and not escape. The increased pressure will eventually cause the roofing material to break, necessitating more repairs.

Important: concrete must be treated with a specific primer before the waterproofing layer is applied.

It is also necessary to lay a vapor barrier layer because if it isn’t, there will be a moisturizing insulation and consequent weighting. The following resources can be used for this:

  • Polypropylene films
  • Polyethylene films
  • bitumen materials

Vapor barrier for a technological flat roof could be a great option. The company offers a large selection of its products, making it easy to select the desired material. In fact, the company has developed tables that greatly simplify the process of choosing a vapor barrier.

Roofing of the roof

The flat roof is cut to allow the water to flow down special funnels rather than standing still on the roof’s surface. Even though the roof’s inclination is only 2 to 4 degrees, it will be sufficient to prevent moisture from puddles.

On top of the insulation layer, a screed is created beneath the slope; this screed also strengthens the base of the roof. The waterproofing layer is then applied. On the other hand, it is occasionally feasible to install the waterproofer before the insulation. For instance, when dense, long-lasting insulation materials are utilized, like PPU or stone wool. It’s true that you won’t be able to use a screed, so you’ll have to give the heat insulator plates the appropriate slope.

Laying of roller melted materials

When compared to the traditional method of installing roofing material, this approach is far more straightforward and efficient. Waterproofing materials include rolled bitumen, bitumen-polymer, and bitumen-tacuenia coatings.

It’s very simple to lay these materials by yourself. A gas burner and a roll of waterproofing material are needed for this. After heating the material on the incorrect side with a burner, it must be gradually turned with a stick until the roll or roof is finished. You must roll the stripes with a wooden gurney, leaving a tiny 8–10 cm overlap.

Important note: the incorrect side of the roll, which deforms when heated, has an image applied to it. You can roll as soon as you notice that the drawing has "sailed."

It won’t be sufficient to apply just one layer of roller waterproofing material; in order to ensure reliability, you’ll need to apply two, with the second layer’s stripes blocking the first layer’s joints.

On certain roof types (such as those made of light prefabricated structures), adhering the initial layer of melted waterproofing may be challenging. In this instance, you will need to use a mechanical fastener to secure the material in increments of at least 50 centimeters. A gas burner is used to melt the second and subsequent layers.

Applying liquid rubber to the roof

Since only liquid rubber waterproofing ensures that the finish coating will remain intact for at least 25 years, it is thought to be the most effective way to shield the roof from moisture and damaging environmental effects. There is not a single seam throughout the entire coating.

Furthermore, liquid rubber works well as a vapor barrier, so it’s best to use it if money is tight and you don’t have enough to buy extra building supplies.

A two-channel mixing and dosing spray is used in mechanized roof waterproofing with liquid rubber.

ESSENTIAL: all work involving liquid rubber must be done in calm, dry conditions with an air temperature of at least + 5 °C.

Strips that are between one and two meters wide are used to evenly apply the material to the roof’s surface. 3 to 5 mm is the layer thickness. Additionally, extra waterproofing layer reinforcement using geotextiles or one-component liquid rubber is required in areas where liquid rubber will be close to vibrants, drainage, or parapettes.

Naturally, there are other types of waterproofing materials for roofs besides these. There are actually a lot more of them. However, the most widely used and successful methods for shielding the roof from moisture and other issues right now are liquid rubber and melted roller materials.

The selection of materials for a flat roof’s vapor and hydro barriers. Characteristics of the preparatory process and guidelines for applying roller materials to the surface

Maintaining the longevity of your concrete roof and shielding your house from water damage require proper waterproofing. Despite its durability, concrete may eventually become vulnerable to water infiltration if it is not sufficiently sealed. Using a dependable waterproofing system, you build a barrier that keeps moisture, snow, and rain off your roof.

The use of liquid waterproofing membranes is one of the best techniques for concrete roof waterproofing. These membranes cover the whole surface of the roof in a seamless, flexible coating after being applied in liquid form. This aids in sealing up holes and fractures to stop water from leaking in and possibly causing structural problems.

The significance of routine maintenance is another important factor to take into account when waterproofing concrete roofs. You can find any places where the waterproofing has weakened or deteriorated by routinely inspecting your roof. Timely waterproofing material reapplications and repairs can greatly increase the lifespan of your roof and lower the probability of expensive water damage repairs.

In the end, paying for appropriate waterproofing for your concrete roof is an investment in your house’s long-term stability and security. In addition to preserving the integrity of your roof, proactive steps to prevent water intrusion also guarantee a safer and more comfortable living environment for you and your family.

"In our guide to concrete roof waterproofing, we go over key methods and supplies that shield your house from water damage. Our goal is to equip homeowners with the knowledge necessary to maintain a strong and resilient roof, from comprehending the significance of a waterproofing barrier to offering helpful advice on selecting the appropriate materials. Whether you’re building from the ground up or remodeling an old building, knowing these basics guarantees that your concrete roof will always be a reliable barrier against the weather."

Video on the topic

Quy cách xây tường anh chị nh plate nên biết | nhà đất đồng nai

Waterproofing of flat roof – riteration of the roof of the garage

Flat roof. How to do waterproofing.

What do you think, which element is the most important for a reliable and durable roof?
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Alexandra Fedorova

Journalist, author of articles on construction and repair. I will help you understand the complex issues related to the choice and installation of the roof.

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