For decades, roofing felt has remained the most popular material for covering garage roofs - cheap, easy to install, but extremely short-lived. After only 3-5 years it begins to crack, swell and leak water, and repairs cost almost the same as new installation. If you are tired of patching leaks every season or just want to make your garage roof more reliable without extra costs, this article is for you.

We have analyzed 7 alternatives to roofing felt, which are cheaper than metal tiles or corrugated sheets, but last 2-3 times longer than classic bitumen coatings. All options can be stacked with your own hands without professional tools, and their cost does not exceed 500-1500 rub/m² (depending on the region). In the article you will find not only a comparison of materials, but also step by step instructions with photos, calculation of consumption and tips on how to avoid mistakes during installation.

Particular attention was paid to solutions for flat and pitched roofs (slope up to 30°), as well as materials that can withstand winters with temperature changes from -30°C to +35°C and summer heat in direct sunlight. All recommendations are based on reviews of garage owners from different climatic zones of Russia - from Sochi to Yakutia.

1. Bitumen mastic: the cheapest “liquid” coating

If your budget is limited, but roofing felt has already become obsolete - hot or cold bitumen mastic will be the optimal solution. This is the same bitumen, but without a cardboard base, which is applied with a brush or roller. Average consumption: 1-1.5 kg/m² in 2 layers.

Benefits:

  • 💰 Lowest price - from 120 RUR/m² (mastic TechnoNIKOL No. 24 + primer).
  • 🔧 Does not require dismantling the old coating — can be applied over roofing felt after cleaning.
  • 🛡️ Fills in the cracks and creates a seamless coating that is resistant to water.
  • ⏱️ Service life — 5-7 years (with proper preparation of the base).

Disadvantages: mastic is afraid of mechanical damage (for example, from falling branches) and requires updating every 3-4 years. To increase service life, they are often laid on top of it. geotextiles or sprinkle with coarse sand.

⚠️ Attention: Hot mastic can only be applied at air temperatures above +5°C! At subzero temperatures, it becomes brittle and peels off.
Type of mastic Price for 1 kg Consumption per 1 m² Application temperature
TechnoNIKOL No. 24 (hot) 80-100 rub. 1-1.2 kg from +5°C
Bitumast (cold) 150-180 rub. 0.8-1 kg from -10°C
Hydroisol (with crumb rubber) 220-250 rub. 0.7-0.9 kg from 0°C

Application instructions:

  1. Clean the roof of debris, dust and old roofing felt (if it is peeling off).
  2. Apply primer (eg TechnoNIKOL No. 01) for better grip.
  3. Warm up the mastic (for a hot version) or stir (for a cold version).
  4. Apply the first coat with a brush or roller and let dry for 4-6 hours.
  5. Cover with a second layer, reinforce with fiberglass if necessary.
📊 What material are you considering for your garage roof?
Bitumen mastic
Euroroofing material
Ondulin
Corrugated sheet
Another option

2. Euroroofing felt: an improved version of the classics

If you need material “like roofing felt, but better” - euroruberoid (aka polyester based roofing felt) will fit perfectly. Unlike the classic version, it does not rot, does not crack and serves 10-15 years thanks to:

  • 🧵 Fiberglass or polyester base (instead of cardboard).
  • 🛢️ Modified bitumen with additives of SBS polymers (frost resistant).
  • 🔥 Top layer of slate topping (protects against UV rays).

Price: from 250 rub/m² (brands Technoelast, Bikrost). The model is enough for the garage RKP-350 (sprinkling on one side) or RKK-400 (sprinkling on both sides for the top layer).

How to lay:

  1. Roll out the roll on the roof so that it rests for 1-2 hours.
  2. Heat the underside with a gas burner while pressing the material against the base.
  3. Lay strips overlapping 8-10 cm, coating the joints with mastic.
  4. For flat roofs, do 2-3 layers (lower - Bikrost HPP, top - Bikrost K).

Remove debris and dust|Prime the surface with a bitumen primer|Level the holes with cement mortar (if the slope is less than 5°)|Dry the base (humidity no more than 4%)-->

⚠️ Attention: When laying euroroofing felt on a wooden roof, be sure to use antiseptic impregnation to protect against rotting! Bitumen retains moisture, and without treatment, the boards will rot in 3-4 years.

3. Ondulin: light and silent

If your garage is located in a co-op, where the noise from the rain on the metal roof annoys the neighbors - ondulin (aka euroslate) will be an excellent compromise. These are corrugated sheets of cellulose impregnated with bitumen, which:

  • 🔇 Absorb sound (unlike corrugated sheets).
  • 🏋️ Weighs 4 times less metal tiles (6 kg/m² vs 25 kg/m²).
  • 🔨 Cut with a regular hacksaw (no need for a grinder).

Price: from 400 rub/m² (sheet Ondulin DIY size 2x0.95 m covers 1.9 m²). Service life: 15-20 years when installed correctly. The main disadvantage is that it fades in the sun and becomes brittle at temperatures below -25°C.

Installation instructions:

  1. Make a sheathing from 40×60 mm timber in increments 60 cm (for a slope of 5-15°).
  2. Secure the sheets with special nails (20 pcs/sheet) in top wave.
  3. Lay offset half sheet to avoid long vertical joints.
  4. Seal joints onduflesh tape or bitumen mastic.
What happens if you lay ondulin without sheathing?

Without sheathing, the sheets will sag under the weight of snow or when heated in the sun. This will lead to deformation, cracks and leaks within 1-2 seasons. This is especially critical for flat roofs (slope less than 10°), where water will stagnate in the deflections.

4. Corrugated sheeting: reliable, but noisy

If you need maximum service life (25-30 years) and you are ready to put up with the noise when it rains - corrugated sheet (corrugated metal sheets) would be the best choice. Optimal thickness for a garage: 0.4-0.5 mm (brands S-8, S-10, S-20).

Pros:

  • ⚡ Installation in 1 day (sheets up to 6 m long cover the roof without joints).
  • 🔥 Not flammable and can withstand temperatures from -50°C to +80°C.
  • 🛠️ You can walk on the roof without the risk of damaging the coating.

Cons: high price (from 600 rub/m²) and necessity waterproofing (condensation on the inside of the sheets). Corrugated sheeting with polyester coating (cheaper than pural or plastisol).

Installation tips:

  • Use self-tapping screws with rubber washer (6-8 pcs/m²).
  • Lay sheets with overlap 10-15 cm (depending on the slope).
  • For roofs with a slope of less than 12°, be sure to use waterproofing membrane.
💡

To reduce the noise from rain on corrugated sheets, place a layer underneath sound insulation made of mineral wool 50 mm thick. This will also improve the insulation of the garage.

5. Soft tiles: aesthetics and durability

If your garage is adjacent to the house and you want the roof to look stylish - soft tiles (aka bituminous or flexible tiles) will fit perfectly. These are small tiles (usually 1x0.3 m) made of fiberglass impregnated with bitumen, with colored stone chips.

Benefits:

  • 🎨 More than 50 colors (can be matched to the color of the house).
  • 🕒 Service life 20-30 years (with proper ventilation).
  • 🧊 Doesn't break in cold weather (unlike ondulin).

Price: from 500 rub/m² (brands Shinglas, Katepal, TechnoNIKOL). A collection is enough for the garage economy class (for example, Shinglas Country).

Installation features:

  1. Laying only on continuous sheathing (OSB, plywood 12 mm).
  2. Air temperature during installation - from +5°C (bitumen must be plastic).
  3. Fastening with special nails (4 pcs/tile), the caps are closed with the next row.
⚠️ Attention: Soft tiles require ventilated under-roof space! Without ventilation, bitumen overheats in the summer, and condensation forms on the inside in winter.

6. Sprayed polyurethane foam insulation (PPU)

If you are looking the most modern and durable solution - sprayed polyurethane foam (PPU) creates a seamless coating that will last 30+ years. This is a two-component composition, which is applied with special equipment and hardens in a few seconds, forming a hard foam crust.

Pros:

  • 🔒 100% tight (no seams or joints).
  • 🧊 Withstands from -60°C to +120°C.
  • 🏗️ Additionally insulates the roof (thermal conductivity coefficient 0.025 W/m K).

Cons: high price (from 1200 rub/m²) and the need to hire a team with equipment. However, if you count payback period (there is no need for repairs for 30 years), polyurethane foam turns out to be more profitable than roofing felt, which has to be changed every 5 years.

Application technology:

  1. Cleaning and drying the roof (humidity no more than 5%).
  2. Applying the first layer with a thickness of 10-15 mm.
  3. After 10 minutes - the second layer (total thickness 20-30 mm).
  4. Painting acrylic varnish for protection against UV rays (optional).
💡

PPU is the only material from the list that simultaneously waterproofs, insulates and strengthens roof. Ideal for garages in regions with harsh winters (for example, Siberia, Far East).

7. Geomembrane: for temporary or auxiliary covering

If you need fast and cheap close the roof for 2-3 seasons (for example, while you are saving for corrugated sheeting), geomembrane (for example, PVC membrane or EPDM) will be a temporary solution. This is a thin (1-2 mm) roll material based on synthetic rubber or polyvinyl chloride.

Pros:

  • ⚡ Installation in 1 hour (rolled out and secured).
  • 💧 Absolutely waterproof.
  • 🔄 Can be removed and reused.

Price: from 150 rub/m² (membrane Logcroft thickness 1.2 mm). Service life: 3-5 years with careful use. The main disadvantage is that it is afraid of mechanical damage (needs to be protected from branches and gravel).

How to attach:

  1. Roll the membrane over the roof, leaving a margin 10 cm on the walls.
  2. Secure around the perimeter clamping bars in increments of 20-30 cm.
  3. Glue the joints double-sided tape or weld with a heat gun.

Comparison table of materials

Material Service life Price (rub/m²) Difficulty of installation Suitable for slope
Bitumen mastic 5-7 years 120-200 Low 0-30°
Euroroofing material 10-15 years 250-400 Average 0-25°
Ondulin 15-20 years 400-600 Low 5-30°
Corrugated sheet 25-30 years 600-1000 Average 5-30°
Soft tiles 20-30 years 500-900 High 10-90°
PPU 30+ years 1200-1800 High (requires equipment) 0-30°
Geomembrane 3-5 years 150-300 Low 0-20°

FAQ: Frequently asked questions about garage roof coverings

Is it possible to lay new roofing felt on top of the old one?

Yes, but only if the coating is old didn't swell and does not peel off. Before installation:

  1. Clear the roof of debris and dust.
  2. Seal the cracks with bitumen mastic.
  3. Apply primer for better adhesion.

If the old roofing felt has delaminated or is rotting, it needs to be remove completely, otherwise the new layer will repeat all the defects.

Which material is the quietest when it rains?

Based on noise level, materials are ranked as follows (from quietest):

  1. Soft tiles (almost silent).
  2. Ondulin (muffles the sound).
  3. Euroroofing material (average noise level).
  4. Corrugated sheet (the noisiest).

For additional sound insulation, use mineral wool or expanded polystyrene under cover.

What to do if your garage roof leaks in winter?

Temporary measures:

  • 🔥 Melt ice and snow at the leak site hot water (do not use salt or reagents!).
  • 🧊 Fill the crack cold bitumen mastic (for example, Bitumast).
  • 🧰 Close the leak a piece of roofing felt, pinning him down with a brick.

After the thaw:

  • Clear the roof of snow and ice.
  • Dry the garage heat gun.
  • Repair the coating (replace sheets or apply a new layer of mastic).
Do I need to insulate my garage roof?

Garage roof insulation recommended, if:

  • Do you store it in the garage? batteries, paint or other frost-sensitive items.
  • Garage adjacent to the house (so as not to lose heat).
  • Do you live in a region with frosts below -20°C.

Optimal insulation:

  • Expanded polystyrene (cheap, but flammable).
  • Mineral wool (non-flammable, but afraid of moisture).
  • PPU (the most effective, but expensive).
How to calculate the amount of material for a roof?

Calculation formula:

(Roof Length × Roof Width) × Safety Factor = Total Area

Safety factors:

  • Roofing felt/euro-roofing felt: 1.1 (for overlaps).
  • Corrugated sheet/ondulin: 1.15 (for trimming).
  • Soft tiles: 1.05 (minimum waste).

Example: Roof 6x4 m, covering - corrugated sheeting.

(6 × 4) × 1.15 = 27.6 m²

Round up to 28 m² (standard width of corrugated sheet is 1.1 m, length is 6 m).