10 Best Felt Roof Repair Sealant in The UK

Last updated on 18/08/2025

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Flat Roof Waterproofing Compound 5L with Application Brush – Quality Flat Roof Sealant Paint - House and Shed Roofing Repair and WaterProof Coating DIY - for Bitumen, Asphalt, Felt, Concrete, Metal

Why We Love It

Ideal for roof repairs.
Versatile waterproofing protection.
Easy DIY application.

Main Highlights

IDEAL FOR ROOF REPAIRS: Set off Flat roof sealant paint with an application brush included. It’s a reliable choice for maintaining older roofs or preventing leaks, resealing, waterproofing, and repairing existing roofs for houses and sheds. The compound keeps roofs watertight almost immediately after application.
VERSATILE WATERPROOFING: Effectively seals and protects a variety of surfaces, roof repair paint for asphalt roofs, felt roofs, concrete decks, asbestos-cement sheeting, metal sheeting, slates, and tiles.
EASY APPLICATION: Roof sealant paint spreads smoothly with the included brush. For best results, ensure the surface is clean and dry before applying two coats of this compound. Ideal for DIYers - just mix well and start sealing.
DURABLE FIBRE-REINFORCED PROTECTION: Contains organic fibres, waterproof paint sealant provides strength and stability, creating a long-lasting barrier against water, even in harsh weather conditions.
GREAT VALUE FOR MONEY: A cost-effective shed roof paint waterproof solution delivering high-quality waterproofing, saving you from expensive roof repairs. Ideal for flat roofs, sheds ect.

Cromar Grey Cromapol Acrylic Waterproofing Roof Sealant Fibre Reinforced Roof Coat 5Kg

Why We Love It

Instant protection in one coat.
Fibre reinforced for durability.
Personalization with color options.

Main Highlights

One Coat Instant Protection
Waterproofing Roof Sealant
Fibre Reinforced
Available in White, Black, Clear and Grey

Polar Specialist Coatings

Polar Black Felt Seal - 2.5 Litre - Instant Waterproof Roof Sealant - Ideal for Flat or Pitched Felt, Shed & Garage Roofs - Easy to Apply

Free Shipping

Why We Love It

Instant waterproof sealant solution.
Easy one-coat application.
Provides long-lasting protection.

Main Highlights

Waterproof Seal: Quickly address emergency leaks or cracks with our easy-to-use outdoor sealant. Apply it directly to the affected area of your felt roof, whether it’s on a garage, shed, or another structure. The black sealant forms an immediate waterproof barrier, creating a durable membrane that effectively keeps out damp and water.
One-Coat Repair: Save time with Polar FeltSeal, which delivers a reliable fix with just one coat. Ideal waterproof sealant for quick and effective repairs on various surfaces, it provides instant waterproof protection with minimal effort. Each litre covers up to 1㎡, ensuring dependable coverage exactly where you need it.
Multi-Surface Compatibility: The ideal solution for instant waterproofing of felt roofs on sheds, garages, or caravans. Formulated specifically for optimal performance on flat or pitched felt roofs. For other surfaces such as drainpipes, gutters, asphalt, metal, brick, and concrete, use Polar LeakSeal for effective waterproof protection.
Instant Protection: Formulated for tough, hard-wearing and instant protection, this waterproofing sealant is perfect for urgent repairs or maintenance. It provides lasting protection for cracked surfaces and performs reliably in all weather conditions, ensuring peace of mind.
Easy Application: No primer is needed before applying Polar FeltSeal. Simply apply it directly for instant waterproof protection. Ensure the affected area is clean, free of moss, debris, and any surface water, oil, or grease. Depending on the size of the area, use a brush or roller for application. It will be touch dry within 3-4 hours.

Everbuild Black Jack 905 – All Weather Roof Coating – Solvent-Based – Fibre-Reinforced – Fast Drying – Weatherproof – Black – 5 Litre

34% Off

Why We Love It

Quick drying for efficient use.
Super strong, weatherproof finish.
Versatile, complete waterproof coating.

Main Highlights

QUICK DRYING FORMULA – This brushable bitumen compound dries fast and is ready for a second coat in 24 hours.
SUPER STRONG FINISH – Solvent-based formula with added fibres to reinforce the strength and weatherproofing of the coating.
IDEAL FOR WEATHERPROOFING APPLICATIONS – Designed to deliver an immediate waterproof coating to non-plastic guttering, structural steelwork and other roofing applications.
SUITABLE FOR USE ON A RANGE OF SUBSTRATES – Use it to reseal and weatherproof a range of materials, including asphalt and felt roofing, concrete decks and sheeting, metal sheeting, tiles and more.
COMPLETE WATERPROOF COATING – Versatile enough to use as a protective barrier on walls and roofs to prevent water and vapour entry.
A CHOICE OF SIZES – Available in both 5-litre and 25-litre tins to suit your project size.

Polar Specialist Coatings

Polar Premium Grey Felt Roof Sealant 500ml - Instant Waterproof Protection - Professional Grade Repair for Flat and Pitched Roofs

Free Shipping

Why We Love It

Waterproof instant sealant solution.
Single coat application needed.
Reinforced for durability.

Main Highlights

Waterproof Seal: Quickly address emergency leaks or cracks with our easy-to-use outdoor sealant. Apply it directly to the affected area of your felt roof, whether it’s on a garage, shed, or another structure. The grey sealant forms an immediate waterproof barrier, creating a durable membrane that effectively keeps out damp and water
One-Coat Repair: Save time with Polar FeltSeal, which delivers a reliable fix with just one coat. Ideal waterproof sealant for quick and effective repairs on various surfaces, it provides instant waterproof protection with minimal effort. Each litre covers up to 1㎡, ensuring dependable coverage exactly where you need it
Multi-Surface Compatibility: The ideal solution for instant waterproofing of felt roofs on sheds, garages, or caravans. Formulated specifically for optimal performance on flat or pitched felt roofs. For other surfaces such as drainpipes, gutters, asphalt, metal, brick, and concrete, use Polar LeakSeal for effective waterproof protection
Instant Protection: Formulated with reinforced fibres for tough, hard-wearing, and immediate protection, this waterproofing sealant is perfect for urgent repairs or maintenance. It provides lasting protection for cracked surfaces and performs reliably in all weather conditions, ensuring peace of mind
Easy Application: No primer is needed before applying Polar FeltSeal. Simply apply it directly for instant waterproof protection. Ensure the affected area is clean, free of moss, debris, and any surface water, oil, or grease. Depending on the size of the area, use a brush or roller for application. It will be touch dry within 3-4 hours

Polar Specialist Coatings

Polar Black Felt Seal - 1 Litre - Instant Waterproof Roof Sealant - Ideal for Flat or Pitched Felt, Shed & Garage Roofs - Easy to Apply

Free Shipping

Why We Love It

Waterproof seal for emergencies.
One Coat repair solution.
Easy and specific application.

Main Highlights

Waterproof Seal: Quickly address emergency leaks or cracks with our easy-to-use outdoor sealant. Apply it directly to the affected area of your felt roof, whether it’s on a garage, shed, or another structure. The black sealant forms an immediate waterproof barrier, creating a durable membrane that effectively keeps out damp and water
One-Coat Repair: Save time with Polar FeltSeal, which delivers a reliable fix with just one coat. Ideal waterproof sealant for quick and effective repairs on various surfaces, it provides instant waterproof protection with minimal effort. Each litre covers up to 1㎡, ensuring dependable coverage exactly where you need it
Multi-Surface Compatibility: The ideal solution for instant waterproofing of felt roofs on sheds, garages, or caravans. Formulated specifically for optimal performance on flat or pitched felt roofs. For other surfaces such as drainpipes, gutters, asphalt, metal, brick, and concrete, use Polar LeakSeal for effective waterproof protection
Instant Protection: Formulated with reinforced fibres for tough, hard-wearing, and immediate protection, this waterproofing sealant is perfect for urgent repairs or maintenance. It provides lasting protection for cracked surfaces and performs reliably in all weather conditions, ensuring peace of mind
Easy Application: No primer is needed before applying Polar FeltSeal. Simply apply it directly for instant waterproof protection. Ensure the affected area is clean, free of moss, debris, and any surface water, oil, or grease. Depending on the size of the area, use a brush or roller for application. It will be touch dry within 3-4 hours

Ronseal TERRM750 Thompsons Emergency Roof Repair Mastic 750 ml, Black

Why We Love It

Effortless application process.
Designed for comfort.
User-friendly interface.

Main Highlights

Easy application
Ergonomic design
Easy to use

Bond-It All weather roofing compound - 2.5 litre - waterproof coating for common roofing surfaces including mastic asphalt, roofing felt, corrugated iron, fibre cement, slates, lead, copper, tin & zinc - resists extremes of temperature.

3% Off

Why We Love It

Efficient in all weather conditions.
Resists temperature extremes.
Versatile roofing surface applications.

Main Highlights

Bond It All weather roofing compound 2.5 litre waterproof coating for common roofing surfaces including mastic asphalt roofing felt corrugated iron fibre cement slates lead copper tin and zinc resists extremes of temperature.
Brand : Bond It
Product type: SEALANT
Color: black
Bond It Zwart BUILDING MATERIAL Beits Roof Coatings Paints Bond It BUILDING MATERIAL

Gorilla 84756 Waterproof Coat & Seal Black 473ml

Free Shipping

Why We Love It

Superior sealing power.
Thick, durable coat.
Elegant black finish.

Main Highlights

Easy to use
Value for money
Design & durable

professional soma fix

Roof Sealant - Waterproof Bitumen Sealant for Roofing Felt and Gutter, Roof Felt Adhesive - Black Paste Rubber - Stops Leaks & Weatherproof (310ML)

5% OffFree Shipping

Why We Love It

Non-toxic and safe for use.
High-grab adhesion for durability.
Outstanding waterproofing for roofing.

Main Highlights

SIMPLE & SAFE - Non-toxic when cured. Supplied in a 310ML cartridge for easy application with a standard caulking gun. Ensure the surface is clean and dry before use
HIGH-GRAB ADHESION - Roof sealant bonds exceptionally well to brick, concrete, lead, zinc, ceramic, and insulation panels
WATERPROOF - Butyl-Based Sealant provides outstanding water resistance for roofings. Perfect for sealing leaks and weatherproofing roofs, gutters, roofing felts, chimneys, and more
PREVENTS CORROSION - Helps prevent metal corrosion on vehicles and is suitable for bonding, assembling, and repairing ventilation ducts, drainage systems, aerials, and pipe outlets
WEATHERPROOF - Suitable for application in temperatures ranging from +8°C to +35°C, ensuring reliable performance all year round

8.9

Excellent

Save 5%

We scanned 1164 products

We reviewed these offers relevant to the Felt Roof Repair Sealant within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like NOVECRAFTO, Ashbrook Roofing, Polar Specialist Coatings, Everbuild, Ronseal, Bond It, Gorilla, professional soma fix, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Felt Roof Repair Sealant in the market, we considered we took a deep dive into 5821 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is Flat Roof Waterproofing Compound 5L with Application Brush – Quality Flat Roof Sealant Paint - House and Shed Roofing Repair and WaterProof Coating DIY - for Bitumen, Asphalt, Felt, Concrete, Metal. We love many things about this product by NOVECRAFTO. What sets it apart from the competition is Ideal for roof repairs. , Versatile waterproofing protection. , Easy DIY application.
The best value product for most shoppers and where user satisfaction is continuously the highest is Cromar Grey Cromapol Acrylic Waterproofing Roof Sealant Fibre Reinforced Roof Coat 5Kg by Ashbrook Roofing based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Felt Roof Repair Sealant and the best cost-to-value ratio is Everbuild Black Jack 905 – All Weather Roof Coating – Solvent-Based – Fibre-Reinforced – Fast Drying – Weatherproof – Black – 5 Litreat Everbuild with a 34% discount.
Our list of the best Felt Roof Repair Sealant is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Felt Roof Repair Sealant in The UK

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Everbuild Everflex Roof and Gutter Sealant – Butyl-Based Sealant and Adhesive for Roofing – Excellent Weathering Properties – Black – 295 ml

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Everbuild – Evercryl – Emergency Roof Repair Cartridge – Instant Waterproofing Roof Repair – Suitable For Damp and Wet Conditions – Translucent – 300ml

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Thompsons 10 Year Roof Seal Grey 1L

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Sika Stixall – Extreme Power Sealant And Adhesive – Waterproof – Black – 290ml

Polar Premium Black Waterproof Tapeseal Sealant Repair Tape 4" x 5ft

We scanned 1164 products

We concluded that: