How To Repair A Garage Roof, Including With Your Own Hands, How To Fix A Leak From The Inside

2024 Author: Bailey Albertson | [email protected]. Last modified: 2023-12-17 12:53

How to repair different types of garage roofs

The roof of a garage of any type needs timely repair, since leaks and other defects are frequent during the operation of the premises. Before the start of the repair, the scale of the necessary repair is determined, materials are selected and a set of works is carried out.

Content

• 1 Repair for leaks in the garage roof

  • 1.1 How to Repair a Concrete Garage Roof

    1.1.1 Video: Repairing a Part of a Concrete Garage Roof

  • 1.2 Repair of the metal roof of the garage

    1.2.1 Video: applying bitumen mastic to a metal garage roof

  • 1.3 How to repair the roof of a garage from corrugated board

    1.3.1 Video: roof repair from corrugated board

  • 1.4 Repair of a soft roof of a garage

    1.4.1 Video: repair of a soft garage roof

• 2 Materials for repair

  • 2.1 Application of roll materials "Technonikol" for roof repair

    2.1.1 Video: installation of the coating "TechnoNIKOL"

  • 2.2 Coating "Gidroizol" for a garage roof

    2.2.1 Video: repair of a roof made of corrugated board with liquid "Gidroizol"

  • 2.3 Repair with roofing material

    1 Video: roofing felt on the roof of the garage

  • 2.4 Repair of a garage roof with mastic

    2.4.1 Video: the use of mastic for waterproofing the roof

  • 2.5 Repair with bitumen

    2.5.1 Video: preparing hot bitumen mastic

• 3 How to fix a roof leak from inside the garage

Repair for leaks in the garage roof

As a result of prolonged exposure to climatic factors, any structure loses its performance characteristics, which contributes to the appearance of cracks, leaks, deformation in the roof. This is typical of any type of roof, and in each case, certain materials, technologies and tools are used for repairs.

Leaks can also occur in the winter season due to partial thawing of ice and accumulation of water at the transition from a warm roof to a cold one.

For partial or complete repairs, the following materials and tools are often used, selected depending on the type of roof:

• cement mixture for concrete screed;
• bitumen or mastics based on it;
• roofing material, technonikol, waterproofing and other roll materials;
• polyurethane foam.

How to Repair a Concrete Garage Roof

A roof made of concrete slabs is usually equipped with a slight slope towards the wall opposite to the exit from the garage. This is necessary to ensure the descent of precipitation and to prevent the accumulation of large amounts of snow. There are also buildings with flat roofs, but in such cases, thorough waterproofing of the surface and arrangement of rainwater drainage are important.

If the roof of the garage has a slight slope, it must be waterproofed especially carefully

Long-term operation of the garage box leads to a gradual wear of the waterproofing layer, a violation of the tightness of the seams and joints of the plates. As a result, leaks occur and repair is required. Most often, water enters the room through cracks in the joints. To solve this problem, several effective methods are used, which are selected depending on the situation and the condition of the roof. There are the following problems and ways to fix them:

• on the new roof made of concrete slabs without waterproofing, a concrete screed is made to level the surface, which will prevent the accumulation of moisture. After that, roofing material is melted on the dried surface or bitumen mastic is applied. Liquid rubber is also effective. The entire surface is treated with these materials;

  

  Concrete screed eliminates all surface irregularities that could cause water accumulation

• the roof, covered with old roofing material, is cleaned of this material, cracks are found and they are covered with bituminous mastic. If necessary, you can treat the entire surface with a waterproofing compound;

  

  Roofing material is fused with a gas burner with overlapping cloths on top of each other

• A practical solution for an old or new garage roof is the priming of concrete slabs followed by application of roofing material. To do this, the surface is cleaned of dirt and debris, dried, carefully treated with bitumen mastic, first with one layer, and after it dries - with the second. Next, the welded roofing material is attached using a torch;

  

  For better sealing, the roof surface can be treated with two layers of bitumen mastic before fusion

• applying liquid rubber is an expensive but effective measure for repairing small cracks and waterproofing a concrete slab roof. The product is sprayed on the entire roof, but the high cost of the material makes it cost-effective only for large areas.

  

  Liquid rubber is commonly used on large roofs

To apply any of the above repair technologies, you will need the following tools:

• building level;
• spatulas and hard brushes;
• rules of different lengths for leveling liquid rubber;
• industrial hair dryer or gas burner;
• metal brush;
• Master OK.

All tools must be reliable and safe, and when spraying liquid rubber or fusing roofing material, use personal protective equipment.

Video: repairing part of the concrete roof of the garage

youtube.com/watch?v=wuJx6qsTTLI

Repair of a metal roof of a garage

A concrete, brick or metal garage may have a metal roof, but this material is susceptible to corrosion. As a result, rust, cracks and cracks appear, through which moisture enters the room. Before carrying out repairs, determine the location of the slots and the scale of the work required.

The metal roof of the garage is most often made of sheet metal 3-4 mm thick

The metal roof can be made of metal sheets, the thickness of which is about 3-4 mm. Leaks are formed in different places, depending on what the method of repair work is determined. The main situations are the following:

• small gaps in the area of / u200b / u200bthe junction of the roof and walls can be sealed with tow. The metal surface should be treated with waterproofing paint or liquid rubber to eliminate small cracks. All work is carried out on a dry surface;

  

  Liquid rubber is often used to waterproof large metal roofs

• on a gable metal roof, holes can form at the junction of the planes. In this case, the welding method is most effective, which requires special equipment, as well as sheets of metal slightly larger than the hole. Such patches are welded in places where cracks are formed, eliminating leaks;

  

  Small sheets of metal are welded in places where cracks and through holes appear

• leaks at the junction of walls and a metal roof can be neutralized with foam, sealants for outdoor use. The entire roof can be treated with roll-up waterproofing materials.

  

  You can close up small defects in the roof of a garage made of corrugated board using polyurethane foam

Roll materials are not suitable for filling large holes, but the welding method is optimal. To prevent leaks on the roof of the garage, it is worth laying roofing material, having previously treated the surface with bituminous mastic.

Video: applying bitumen mastic to a metal garage roof

How to repair the roof of a garage from corrugated board

A brick, concrete or metal garage can have a profiled sheet roof. The shape of the roof can be gable or flat with a slope. In any case, long-term operation, climatic conditions contribute to the appearance of holes, violation of the waterproofing layer. The rafter system is often the basis of a roof made of corrugated board and therefore the roof covering must reliably protect the room from leaks. In the event of defects in the profiled sheets, the roof is repaired.

The roof made of corrugated board reliably protects the garage from precipitation until defects appear in it due to long-term operation

The main stages of roofing repair from corrugated board are as follows:

1. Inspection of the surface and determination of the scope of the required work. In many cases, damaged corrugated sheets need to be replaced completely, but small gaps can be easily eliminated using simpler methods.
2. If the roof is old and has not been repaired for a long time, it is necessary to remove the covering sheets, replace the rotten parts of the rafter system with new elements.
3. After repairing the rafters, you need to check the sheets of corrugated board for integrity. Rusty and deformed elements should be replaced with new ones.

4. A whole and high-quality coating is fixed on the rafter system, and upon completion of the work, a ridge is mounted on the gable roof.

   

   On gable roofs, after the installation of corrugated sheets, a ridge element is installed

5. Minor damages on the corrugated board are eliminated using bitumen mastic and fiberglass, alternating these layers. The last layer is mastic.

Video: roof repair from corrugated board

Repair of a soft roof of a garage

A major garage with a soft roof is especially prone to leaks and requires timely repair. This is due to the fact that the soft roof covering does not have high technical characteristics and long service life. A soft roof can be deformed as a result of severe climatic influences and mechanical damage.

With a large number of holes, cracks, leaks, a complete replacement of the coating is recommended. To do this, remove the old layer of material with an ax or other suitable tool, and then apply a new one. This method is suitable when replacing a soft roof with a harder roof.

The old roof covering is removed with an ax

An ax, knife, trowel and spatula are used for partial repairs and elimination of small leaks. The technology of work is expressed in the following:

1. For a partial repair of the garage roof, bituminous mastic and roofing material are required. On the damaged area, make a cross-shaped cut, bend the edges of the old material and apply heated bitumen inward, and then lay a piece of roofing material, the size of which corresponds to the hole.

   

   Bitumen is applied to the inner surface of the damaged area and a piece of roofing material is laid

2. After laying such an internal patch, a layer of bituminous mastic is applied, and then the bent edges of the material are pressed. Then the outer patch is cut out, the size of which should be 15–20 cm larger than the incision.

3. The patch is fixed with bitumen mastic, the edges are also coated with this compound, and sprinkled with sand on top.

   

   The outer patch should be 15-20 cm longer and wider than the damaged area

If the soft roof of the garage is covered with a network of small cracks that form leaks, then it is best to treat the entire roof completely with bitumen mastic or liquid rubber. The first composition is applied with a brush in several layers after each previous one has dried, and liquid rubber is applied by spraying.

Video: repair of a soft garage roof

Repair materials

There are several main universal types of roof leakage protection materials. They have a service life of over 10 years, strength and resistance to mechanical stress. Such properties are typical for roll and coating waterproofing options, which are optimal for a garage.

Modern roll roofing materials are often used to cover the garage.

Application of roll materials "Technonikol" for roof repair

Technonikol is a roll material for waterproofing various types of roofs. The structure of the web consists of several layers, and the lower layer is bitumen, which melts during installation and ensures a thorough fixation of the web. This material is optimal for a concrete roof, but it can also be used on a wooden roof with a solid sheathing.

Roll coating "Technonikol" consists of several layers, the lowest of which is bituminous

The method of applying this material on a concrete roof requires the following steps:

1. The surface is cleaned of dust and dirt, dried and leveled with a concrete screed. After the leveling layer has dried, work can be continued.

   

   Before starting work, dirt and old coating must be removed from the roof.

2. A bituminous primer is applied to the roof, which is necessary to improve the adhesion of the material to the roof surface and wait for the composition to dry. Next, a small part of the roll is rolled out from the corner of the roof and, with the help of a gas burner or a construction hair dryer, the lower part of the canvas is heated, rolling the roll as needed.

   

   When installing on pitched roofs, use safety cables

3. After installation, each strip is rolled with a roller. This is necessary for a better adhesion of the material to the surface. Each subsequent strip must be laid with an overlap of about 8 cm on the previous one. Thus, the canvases are mounted in two or three layers. In the area of parapets, the lower layer is raised by 25 cm, and the upper layer by 5 cm. All areas of junction are isolated with a special bitumen tape.

Video: installation of coating "TechnoNIKOL"

Coating "Gidroizol" for garage roofs

Often the bitumen-polymer composition "Gidroizol" is used for waterproofing and preventing leaks of the garage roof. It does not require warming up before use, easily eliminates cracks and small cracks in the surface. After drying, a one-piece coating is obtained, which has a service life of tens of years and withstands intense climatic influences. With the help of "Gidroizol" you can not only completely process the surface, but also fill in small gaps and cracks, eliminate holes in the roofing felt, process visors and other areas of the garage roof.

Liquid "Gidroizol" is produced in containers of different volumes

The technology for working with liquid "Gidroizol" has the following features:

1. The surface of a concrete or wooden roof is cleaned of dust and dirt, which helps to enhance the adhesion of the composition.
2. The clean surface is primed with a primer based on "Gidroizol" and allowed to dry for 3 hours.
3. Before use, the composition should be diluted with Solvent in a ratio of 1:10.
4. The product can be applied to the surface with a roller, brush and other painting tools.

After processing, the surface does not allow moisture to pass through, therefore "Gidroizol" is widely demanded for waterproofing

Roll material "Gidroizol" allows you to completely process the roof of the garage and provide reliable protection against leaks. The material is a rolled sheet. High strength, simple installation, long service life and resistance to moisture make Gidroizol popular and effective for wooden or concrete roofs and metal coatings.

Roll material "Gidroizol" consists of a bitumen-polymer binder, reinforced with fiberglass and treated on top with a special coarse-grained dressing

The main stages of using roll material:

1. First, they clean the surface, make a concrete screed on the slab roof and dry it.
2. In case of mechanical installation of the canvas on a pitched roof, the material is rolled out along the bottom of the roof and fixed with staples and a stapler. Subsequent sheets are laid with an overlap of about 10 cm on the lower ones, and the joints are coated with bituminous mastic.
3. The hot method of installation is optimal for flat roofs and is carried out using the TechnoNIKOL waterproofing fixing method. The roll is gradually rolled out over the surface, the lower part of the canvas is heated, pressing it with a roller.

Video: roof repair from corrugated board with liquid "Gidroizol"

Repair with roofing material

Roofing material is often used to renew the waterproofing layer of the roof without dismantling the old coating. With the help of this material, it is possible to protect both a wooden roof with a continuous lathing and a slab concrete garage roof from leaks. At the same time, it is still recommended to remove the old layers of roofing material before installing a new canvas, which will provide good protection of the roof from moisture.

Roofing material with a bituminous layer is often used for roof waterproofing

The technique for processing a roof with roofing material is as follows:

1. The roof is cleaned of dust and dirt. With the help of polyurethane foam, roofing mastic or cement mortar, all existing gaps are sealed.
2. The day before installation, rolls of roofing material need to be rolled out and allowed to rest. If there is not enough space for laying out, you can simply rewind the material in the opposite direction.

3. The roof surface should be primed. To do this, use one of the composition options:

   • heated bitumen with a layer of up to 5 cm;

   • roofing mastic with a temperature of 200 ° C;

     

     Roofing mastic heated to 200 degrees can be used to prime the roof.

   • primer for roofing works.
4. From the lower edge of the roof, begin laying the lining roofing material with an overlap of sheets of 10-15 cm. Fastening is carried out using bitumen or mastic. At least 2 layers of lining are required, the edges of which are tucked under the eaves of the roof and fixed with slate nails.

5. The top layer is made of roofing material with a coarse sand powder. The canvases are fixed with an overlap, smearing all joints with mastic.

   

   For the top layer of a soft roof, sand-tipped roofing material is used

Video: roofing felt on the roof of the garage

Repair of a garage roof with mastic

Manufacturers of waterproofing materials present a wide range of roofing mastics for arranging roofs of various types. Such products are viscous compositions based on polymers, bitumen, rubber, tar, butyl rubber. Liquid formulations allow you to eliminate small leaks in concrete, wood, metal roofs. Their use consists in simply applying the product to a clean and dry surface using a brush or roller. It is possible as a complete treatment of the roof, and spot application in several layers after drying each previous one.

Mastics are presented in an assortment of different manufacturers

Waterproofing mastics are often the basis for laying roll materials. This ensures maximum protection of the roof from leaks so that repairs do not take a long time. It is possible to use mastics as an independent waterproofing, but always in several layers.

Video: the use of mastic for waterproofing the roof

Repair with bitumen

A classic and simple material - bitumen - is in demand for repairing concrete roofs. The product is presented in the form of solid rectangular blocks of black color. The material must be placed in a metal container and heated to 120 ° C. The molten composition hardens very quickly, but thoroughly eliminates all cracks. Therefore, the application of the tool requires skills and dexterity. It is recommended to melt the material in small portions, filling the cracks in turn. If the entire roof is processed completely, then the liquid is distributed over the surface with a T-shaped long stick.

Hard bitumen must be warmed up before use

Video: cooking hot bitumen mastic

How to fix a roof leak from inside a garage

Small leaks in the roof or in the area where the roof meets the wall can sometimes be repaired from inside the garage. To do this, you need to inspect the problem area, determine the size of the gap. Cracks up to 1 cm wide can be repaired with polyurethane foam. Beforehand, it is worth drying the leakage area with a construction hairdryer or other suitable method.

Small cracks can be easily repaired with foam

If the gap is more than 1 cm wide, then it is worth using a cement compound. On the dried surface, the product is laid with a spatula. It is possible to apply several layers after drying each previous one. Such methods are relevant for repairing a concrete garage roof. It is possible to eliminate leaks in the metal roof by welding or laying waterproofing outside. If the coating is soft, then you can use polyurethane foam, but it is best to repair the roof from the outside.

Leaks occur on all types of garage roofs and require elimination of the causes. The modern choice of materials, characterized by simple application, makes it easy to repair the roof with your own hands, without changing the old coating to a new one.