Roof repair in winter Features of winter repair of a soft roof Is it possible to repair in winter according to snip

Soft roofing is a modern material with good technological characteristics, in demand on the market, and in practice, work with which is carried out all year round.

The Russian climate is characterized by a long cold period and often there is a need or desire to cover the roof at lower temperatures.

Will this have serious consequences?

The soft tile is a fiberglass canvas coated on both sides with a bitumen-polymer coating. It is this layer that is responsible for all the most important functions - it is both a waterproofing agent and glue at the same time. In its pure form, bitumen easily melts when the temperature rises and quickly hardens when it is lowered - for a roof, this is more of a disadvantage than an advantage.

Technologists have found a way to neutralize this flaw: modified polymer compositions which improve the properties of the material. As a result, it melts less, does not harden as much in the cold, and does not lose its properties under adverse conditions.

In practice, this means that it "does not float" under straight lines. sunbeams and "does not harden" in the cold, and work on its laying can be done at any temperature. flexible shingles able to withstand temperatures from -55° C to + 110° C, and the strength adhesive bond withstands -35°C.

These are the temperature limits that are most comfortable for a person and favorable for the manifestation of the best technological properties of the material.

From + 5° C and above, soft roofing and mastics are the most plastic, do not require additional softening with hair dryers - the installation process is carried out at an optimal speed without the involvement of auxiliary means. More about installation soft tiles.

How low temperatures affect coverage?

At sub-zero temperature the bituminous layer becomes less plastic, hardens, the polymerization process slows down. Work can be carried out, but the material must be entered in warm room With optimum temperature, and then bring it to the installation site in batches in several packages.

If the frost is severe, then the packages with roofing material should warm up well in a heated room for 1-2 days. During the installation process, you will need to use building hair dryer- warming up tiles and mastics before laying will increase the plasticity of materials, provide better adhesion of shingles to each other.

Working in the cold increases the number of procedures and manipulations, while reducing the speed.

What to do if the base gets wet?

It is impossible to carry out work when it is raining, snowing or start laying without waiting for the base to dry. The substrate must be dry - otherwise, under the sealed underlayment, wet OSB sheets, plywood or boards (depending on what it is made of) will rot in 2-3 years, the roof will become unusable.

To be or not to be?

Carry out styling soft roof winter or not - everyone decides for himself.

It is wiser to plan the installation of the roof for the spring, when more sunny days higher air temperature, less rain ideal conditions for roofing. And in winter, it is quite possible to carry out preparations so as not to waste time during the construction season, and purchase building materials - during this period, the price for them is usually reduced.

The term "soft roof" means with a direct or inverse arrangement of layers of bituminous - polymeric mastics and materials based on fiberglass, fiberglass and polyester fabric.

In this article, we will look at the device in winter period, and is it possible to do a soft roof in winter?

We will also touch upon the issues of operation of a soft roof in winter time and snow removal from the pavement.

To begin, consider existing species soft roof.

In official documents, another term is used to refer to a soft roof - roll roofing.

The design and repair of a soft roof is established by the Code of Practice SP 17.13330.2011 SNiP II-26-76"Roofs".

The document refers to roll roofing straight and inverted roofs, with a layer of insulation made of bituminous, bituminous - polymer material, various membranes and mastic.

With carpet from roll material with gravel or coarse-grained dressing varies from 1.5 to 10%, from bituminous - polymeric material with coarse-grained dressing - from 1.5 to 25%.

To create a slope on a horizontal base, use a screed cellular concrete monolithic installation. The screed can be laid on the base or on the insulation. It is possible to use special shaped extensions from slab insulation.

Soft roofs with a slope ≥ 25% are performed subject to the use of hot mastic and roll material with a heat resistance of 90 ° C, or cold mastic with a heat resistance of 100 ° C.

The composition of the soft roof with a direct arrangement of layers looks like this:

• Base;
• Sloping layer;
• Vapor barrier;
• insulation;
• insulation from 2-4 layers of bituminous roofing material, upper layer has a fine-grained or coarse-grained dressing.

Quantity insulating layers taken into account specifications material and slope of the roof

In an inverted roof, the layers are arranged in reverse order:

• Base;
• Sloping screed;
• Waterproof carpet;
• insulation;
• filter material;
• Weight from gravel or concrete tiles.

Inverted roofing is performed with large areas and on rooftops.

Materials for soft roofing

Russia produces a large number roofing materials. For repairs or new installations
roofs in winter materials with flexibility on a beam with a diameter of 15 cm are suitable at -25°C trademarks Technoelast, Uniflex, Linocrom, Bipolikrin, Bikrost, Krovlyaelast and others.

Common is bituminous - polymer resin applied to the base of fiberglass, fiberglass or polyester.

Materials intended for welding have a special film on the bottom that melts when heated - it serves as an adhesive. Roofing materials without a film are glued on bitumen-polymer mastics. Materials for the lower layers of the carpet are produced without mineral dressing, materials for the upper layer have coarse or fine-grained dressing.

Major repairs and minor repairs - what's the difference?

The difference between overhaul and minor repairs roofing is significant. To assess the condition of the roofing pie in several places, pits measuring 1x1 m are selected, the number of layers of the carpet is determined from the exposed areas, type and condition of the insulation, the presence of a vapor barrier.

Major overhaul includes replacement, assessment of the condition of the insulation: if it is not in working condition, the replacement of the insulation is also required. In the case of a working state of the heater, measures are taken to drain it.

NOTE!

In case of minor repairs on defective sections of the roof, the carpet is replaced or laid additional layers waterproofing material. When repairing or laying by a contractor, each layer of roofing materials requires drawing up acts of hidden works.

Previously used slab insulation made of foam concrete, polystyrene is not able to meet the requirements of current standards for resistance to heat transfer of enclosing structures and they are completely changed. In addition, the current standards have tightened the requirements for vapor barrier insulation: previously, isolation from moisture vapor from residential and office premises was not required. Respectively, to install the vapor barrier, it is necessary to dismantle the insulation.

Definitely require replacement of waterproofing and vapor barrier layers of roofing material, roofing felt, glassine, the service life of which is not more than 5 years.

Common defects

Defects most often occur due to a violation of technology work, non-compliance with design decisions, inaccuracy of staff and lack of care by the owner of the house.

Regular inspection of the roof, timely detection of blisters, vegetation, cracking and delamination of the material can prevent leakage and wetting of the insulation.

Several methods have been developed to detect leaks.

The most effective - filling the roof with water and draining the water after determining the places of defects is possible on flat roofs and the presence of special equipment.

• Leaks occur after rainfall or within 1-2 days later. Flickering leaks that appear periodically are possible.
• Leaks of the first type indicate mechanical damage to the coating, improper installation or poor-quality carpet material.
• Leaks of the second type appear due to poor-quality sealing of junctions and in case of improper installation of the fence and drainage system.
• flickering leaks they talk about microcracks in the roofing material, the insufficient size of aprons at the junctions.

And now let's talk about whether it is possible to lay soft tiles in winter?

Installation of a soft roof in winter

Is it possible to lay a soft roof in winter? Winter is not the best best time for roofing work. However, if necessary and following the rules, you can lay a soft roof in winter:

• Laying in winter should be done under a special awning;
• Working with solutions water based conduct at a temperature not lower than +5° С;
• Thoroughly dry the base before applying mastics and primers;
• Soft roof hardens in winter and becomes brittle, so it should be thoroughly heated;
• Warm up the carpet material at room temperature before laying within 1-2 days.

CAREFULLY!

The use of gas burners for work on the roof is allowed with non-combustible insulation(stone and basalt wool, fiberglass). When using heaters of the G4 combustibility group (expanded polystyrene), fuse with a building hair dryer!

The quality of roofing work in winter depends on compliance with the rules for working with materials. Soft roof device at negative temperatures:

1. The base must be level and dry;
2. The screed for the slope must mature;
3. It is not allowed to contact the porous insulation with wet materials and screeds;
4. Before fusing the waterproofing layer, the surfaces (insulation, plastered parapets, ventilation shafts) must be primed with a primer;
5. Connection points must be protected with aprons.

Flat roof installation

Laying a soft roof in winter requires more technological operations: heating the carpet material at room temperature, drying the base, heating the material before laying with a gas burner or hair dryer. As a result - additional waste of resources and money, low productivity. Subject to requirements technological maps manufacturer of the material laying soft tiles in winter is possible, but not economically feasible.

Temperature conditions and roofing work

In regulatory documents no direct ban winter repair work on the roof.

The main requirement for the outdoor temperature is recorded in SNiP 3.04.01 - 87 "Insulating and Finishing work»: roofing can be carried out in the temperature range from -30 to +60 ° C.

Works with combustible mastics are allowed to be carried out up to -20 ° C.

Works with water compositions without antifreeze additives– not lower than +5° С.

The possibility of performing work to a large extent depends on the technical characteristics of the material. If the passport indicates flexibility on a bar with a diameter of 15 cm at a temperature of -25 ° C, then at -30 it will break.

So, the repair of a soft roof in winter at sub-zero temperatures in detail.

We do winter roof repairs

Urgent repair of the coating in winter can be performed two ways:

1. put in place of the defect patch from roofing material;
2. Seal the leak with mastic based on polyurethane.

In the first case, the work is carried out as follows:

1. We clean the place of leakage from snow and ice;
2. We dry the place of leakage with a gas burner or a building hair dryer;
3. The amount of roofing material required for sealing, preheated to room temperature, evenly heat with a hairdryer or burner from the bottom side until the pattern changes;
4. We apply the patch to the place of the leak, align from the center to the edges, eliminating swelling;
5. Glue by tapping with your hands or with a special roller.

The order of work when using mastic:

1. We clean the place of leakage;
2. We dry;
3. We prime;
4. We put a layer of geotextile on the repaired area, fix it with a stapler to the base;
5. Pour a layer of polyurethane mastic;
6. After polymerization of the first layer (7-8 hours), we perform the second layer of mastic.

Preparation for repair

The first way is faster and easier, the second way is more reliable.

After repairing a flat roof in winter, it is advisable to leave it has a layer of snow 5 cm for protection from solar radiation and bad weather.

Roof care

It is easier, faster and cheaper to fix a problem noticed in time, a minor defect. In order not to bring the roof of the house up to, during the calendar year, it is necessary to inspect the health of the coating.

Is it necessary to clean the soft roof from snow? Yes, definitely!

In winter, it is necessary to clean the soft roof from snow: flat roof heavy snowfall may exceed permissible load on the floor slabs - and this is a disaster! At pitched roof excess snow will come down with an avalanche during the thaw. Cleaning soft roof from snow compulsory procedure roof maintenance.

Is it possible to walk on a soft roof in winter? Strongly do not recommend do this, as the coating becomes very fragile in winter and there is a high probability of damage to the coating.

This simple inspection will allow you to notice problems in time and make minor repairs.

1. Ceilings of the upper floor - to detect stains;
2. Roofs - to detect blisters;
3. Roof junctions to parapets and elevations;
4. Fastening aprons and tight seals.

At sub-zero temperatures, pay attention to:

• Icicle formation;
• Ice plugs in funnels;
• Icing of wall sections near drainage systems;
• The amount of snow on a soft roof.

Walking on a soft roof in winter is strongly discouraged!

In autumn, clean the roof and gutter system from fallen leaves. The topic of repair work on the roof is extensive, as is the number of roofing materials and technologies. If it is not possible to carry out repairs on your own, it is always possible to turn to professionals. The roof of your house requires respect - the durability of the building as a whole depends on its condition.

Useful video

And now we invite you to watch a video on repairing soft tiles in winter:

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Winter, of course, is not the best time to repair a soft roof with roll-on welded materials. Prolonged autumn precipitation filled the old roofing cake with moisture, and the air temperature and weak solar Activity does not allow water to evaporate.

Excess moisture, of course, will not interfere with repairing the roof in winter and eliminating leaks. But in summer the sun will definitely do its job. And if during the installation of the roof in winter, moisture from the lower layers is not completely evaporated, and this is almost impossible without removal (dismantling) existing coverage, then in the summer swellings (air bubbles) will definitely appear. And already next winter, from the pressure of snow in them in best cases microcracks form, and at worst they simply burst.

But there are times when you urgently need to block the horizontal roof high-rise building one apartment or room and fix the leak at least until the summer. For example, in November or December you encountered this problem, and in your apartment good repair, what to do? Here you have two options: hire a team or organization yourself and immediately fix the leak, and then issue an invoice management company on the basis of a contract concluded for a contract or make an application to the HOA, housing and communal services, but in this case there is a high probability of another repair, i.e. they will repair it, but not soon, in turn.

We often have to deal with this problem and repair soft roofs in winter. Some believe that to repair a soft roof, hot tar (bitumen) and roofing material are needed, which is really not recommended to be laid in the winter according to GOST. But for about 20 years now, a different device technology has been used using welded materials laid under gas burner. This technology has significantly reduced the time for repair or installation and increased the service life after it.

If earlier a roof covered with roofing material in 3-4 layers (according to technology) served up to 5 years, today the device of a roll-on welded roof is made in two layers, and the service life is 15-30 years, depending on the quality of the material being laid.

Need a winter roof repair? Contact the company "RSK 24" - we will quickly and efficiently eliminate damage.

There is an opinion that it is not worth starting roof repairs in winter because of the cold, snow and the danger of slipping. However, there is often a need to carry out these works.

Reasons for repairing a roof during the winter season include:

• damage to the roof covering;
• violation of tightness;
• insufficient thermal insulation;
• rotting parts truss system etc.

As a result, cold, dampness and moisture begin to penetrate into the house, the microclimate and quality of life deteriorate.

If it is necessary to repair the roof, the winter season is not a reason to wait for positive temperatures. Roof leaks during thaws can harm downstream building structures, spoil the ceiling, furniture. And if you do not immediately start repair work, there is a danger that in the summer the roof will have to be completely blocked at a disproportionately large material cost. ways, technological features repairs at sub-zero temperatures depend on the type of roofing material originally used and have significant differences.

Features of winter repair of roofing from sheet materials

During the winter repair of the roof, it is quite easy to restore the sheet roofing made of slate, corrugated board, metal tiles, ondulin. The damaged sheet is detected when examining the surface, dismantled, and a new sheet is laid in its place on the crate exactly as the old one lay.

Winter roof repairs include:

• need thorough cleaning roof surfaces from snow and ice;
• compliance with precautionary measures that exclude mechanical damage to the roofing;
• application additional measures fall insurance for workers involved in roof repairs at height.

In addition, you need to know that materials such as slate and ondulin change their properties at sub-zero temperatures and become more brittle. Based on this, when repairing the roof in winter, their fastening to the crate should be carried out only with special fasteners - roofing screws, and when preparing holes for them, use a drill. This will help to securely fix the new sheet, not damage its surface and ensure the roof is completely tight. Also, by simply replacing the damaged sheet, the roof is being repaired from shingles, but for work in winter you will need a hair dryer to heat the material.

Restorative repair of a soft roof in winter

In the event that the coating is made of rolled materials, local roof repairs will require a different approach. Firstly, it is more difficult to determine the place of damage here - water can flow through inconspicuous cracks, at junctions, along a poorly made connection of adjacent canvases. When repairing a soft roof, all precautions should be taken to avoid causing new damage, to ensure maximum safety when people are at a height. Having identified the place of the leak, it is necessary to resolve the issue of the scope of work - completely replace the section of the roofing carpet or apply a piece of new material on top of the old one. Complete replacement produced in the case when the connection between the layers of the coating is broken and there is moisture, ice in the cavities. The procedure for repairing a roof with major defects is as follows:

When repairing minor defects in the roof, the following work is performed:

• the identified cracks are cleaned of debris, thoroughly dried, filled with liquid mastic;
• from above, on a dry and clean surface, one or two layers of new material are welded with a tight pressing of the superimposed piece.

Recovery bearing capacity truss system and additional insulation roofs in winter can be made with inside, in the under-roof space, without dismantling the main coating. Thus, roof repair in winter is not a problem if the work is carried out by professionals using modern materials and technologies.

Why choose us for roof repairs?

The RSK 24 company has been engaged in construction for a long time and has a good reputation. We equally qualitatively carry out the device and repair of a roof in the winter, and also in a warm season.

Works are carried out in compliance with the slightest technological subtleties, so the further operation of the roof occurs without any problems. At the same time, the task does not take a large number time.

Our experts are equipped with everything you need to repair the roof in the winter. Big role plays to ensure their safety, we make sure to use safety ropes and belts.

Roof leaks are always a big nuisance for homeowners. Soft roof is a rolled material, which is mainly used on flat roofs private buildings or garages. First of all, its purpose is to provide waterproofing.

The most common defects and their causes

Repair of a soft roof in winter is most often necessary due to improper cleaning of the roof from snow. Most often, such a coating is used on roofs without slopes, from which layers of snow and ice must be removed manually. In the process of cleaning with a shovel or other tool, it is easy to damage the roofing material. Also, defects appear during normal operation (when the material wears out) and due to errors in the installation of the roof.

The most common defects are:

• mechanical damage;
• the appearance of bumps on the surface of the material;
• cracks;
• peeling tiles or canvases;
• damage by plants, moss or fungi;
• depressurization in place of previously laid patches.

Most often in winter, leaks can be seen during periods of thaw, when the snow partially melts.

Is it possible to carry out repairs in accordance with SNiP

The current SNiP for soft roofs was developed back in 1979. According to him, in winter it is impossible to carry out work on the installation and overhaul of soft roofing. The fact is that for a full-fledged repair, it is necessary to completely dismantle the old roof, dry the roof, and only then begin to lay new material.

At the time when the rules for holding construction works, there were no technologies, tools and materials that the current masters have. Therefore, the work was deemed inappropriate and does not meet the standards. Due to the dismantling of the coating, until recently there was a high risk of flooding the building, which is unacceptable.

What to do if you need a major overhaul in the winter

Almost 40 years after the adoption of SNiP, technology has taken a significant step forward. Now in winter, homeowners have the opportunity to invite a specialized company that will lay new roofing material without dismantling the old coating.

It is allowed to carry out such work only at a temperature of -15 degrees and above, since in other conditions the material will not lie as it should. To carry out work in the cold season, quite expensive PVC membrane rolls are used, since mastic is used during overhaul at sub-zero temperatures it is impractical.

Before work, rolls of material should be stored in a dry room, at a temperature of 15 to 20 degrees above zero. Masters take them out gradually in an amount that is enough for styling in one hour. Fix the PVC membrane on the roof using the surfacing method.

Overhaul with the use of the latest materials is quite complicated from a technological point of view, so professionals should be involved in it.

Technology for performing minor repairs

You can only do it yourself minor repairs soft roof in winter. To do this, you need to determine the location damaged area. It needs to be cleared of snow and debris. In places of defects, you can see cracks, swelling and separation of the roofing material.

1. Bubbles must be opened crosswise, and other types of roof violations can simply be cleaned of debris.
2. Cold liquid mastic is placed in deep cracks, which will be effective for small roof flaws.
3. A piece is cut off from the rolled material, which can completely cover the defect site.
4. With the help of a special hair dryer, it is necessary to dry the part of the roof that you will be repairing.
5. The repair material is heated with a burner (until the pattern on one side changes). Some types of roofing materials do not need to be heated, but it is enough to smear them with mastic.
6. After that, a heated (or well smeared with mastic) patch is placed at the site of a crack or other defect.
7. It is necessary to level the applied material and press it well.