10 Best Felt Flat Roof Waterproofing Paint in The UK

✅Designed for both flat and pitched roofs, this high-performance coating adheres to a wide range of surfaces, including asphalt, brick, concrete, GRP, metal, felt, OSB, and more.
✅No primer needed, no second coat required—just a single, easy application with a brush or roller. Siramico Coatings Liquid Rubber Coating is perfect for hassle-free DIY use, delivering a professional finish with minimal effort.
✅Forming a seamless, elastic membrane, this liquid rubber coating expands and contracts with your surface, providing strong adhesion and waterproofing that lasts up to 10 years.
✅Quick drying and ease to use straight out of the can liquid rubber solution for all your waterproofing requirements.

9.7

Exceptional

9.6

Superb

Cromapol

Cromar Grey Cromapol Acrylic Fibre Reinforced Roof Coat Sealant Paint 2 x 5Kg

Why We Love It

Offers instant waterproof protection.
Bridges gaps with added fibres.
Applicable in various conditions.

Main Highlights

One Coat Instant Waterproof Protection
Added Fibres To Bridge Gaps
Used in Dry and Damp Condiitons
Coverage 1-2m2 per kg

Roofix 20/10 Multi-Surface | Roof & Gutter Repair | Instant Waterproofing Solution for Flat Roofs and guttering | Black, Grey or White (Black) | 5 litres

Why We Love It

Superb flexibility and longevity.
Easily applicable on roofs.
Generous coverage ratio.

Main Highlights

Easy to apply
Excellent flexibility and durability
Can be applied to virtually any roofing material (not rubber)
Can last in excess of 10 year
Coverage is approximately 1 litre per m², nb corrugated & porous surfaces have a lower coverage

Bostik Flexacryl Instant Repair Waterproof Compound for Flat Roofs, Colour: Grey, 5kg

6% Off

Why We Love It

Provides immediate waterproofing.
Versatile for wet surfaces.
Flexible and long-lasting.

Main Highlights

A high performance, instant roof repair compound, ideal for emergency repairs or general waterproofing
One coat application providing immediate waterproofing
For wet or dry surfaces, Can be applied in damp conditions
Flexible and long lasting, Contains fibres to bridge gaps
Contents: 1x Bostik Flexacryl Instant Repair for Flat Roofs, Colour: Grey, 5kg

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.

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.

Waterproofing, Leaking ROOF Repair Coating, Grey, Single Coat. TekCryl 5kg Acrylic (5yr Material Warranty)

Why We Love It

Versatile application on surfaces.
Low smell and VOC.
Comes with 5-year guarantee.

Main Highlights

LEAKING ROOF? GUTTER? GARAGE? SHED?
USE ON FELT, BITUMEN, STEEL, WOOD, CONCRETE, ASBESTOS
BRUSH OR ROLLER APPLIED GREY COLOURED
SOLVENT BASED BUT LOW SMELL LOW VOC
PROFESSIONAL PRODUCT WITH 5 YR GUARANTEE

Polar Specialist Coatings

Polar Leak Seal Clear Paint - 2.5 Litre - Instant Waterproof Roof Sealant - Ideal for Leaks, Cracks & Roof Repair - Concrete, Brick, Metal, Drainpipes & Gutters - Easy to Apply

Free Shipping

Why We Love It

Durable and resilient protection.
Instant and effective repair.
Versatile across multiple applications.

Main Highlights

Waterproof Seal: The ideal solution for instant waterproof sealant on leaks or cracks. Apply roof sealant paint to the affected area to seal. The paint forms a waterproof membrane to keep water out. Easy to apply with a brush or roller, ensuring complete coverage. Durable and resilient, it safeguards against damage from severe weather
One Coat Repair: Don’t waste any time sealing cracks or leaks. Polar LeakFix works in one coat, This flat roof sealant paint provides instant repair on flat or pitched roofs. With 500ml covering up to 0.5㎡, its quick-drying formula ensures minimal downtime. Ideal for both residential and commercial use, offering a reliable solution for all your waterproofing needs
Instant Protection: Formulated with reinforced fibres for tough, hard-wearing, and instant protection. This black sealant is perfect for emergency repairs or maintenance on drain pipes, gutters, and roofs. It gives long-lasting protection to cracked surfaces and performs reliably in all weather conditions, ensuring peace of mind
Easy To Apply: No primer needed before applying Polar Leakfix. Apply waterproofing sealant immediately for instant waterproof protection. Clear the affected area of moss, debris, and surface water, oil, or grease thoroughly. The sealant becomes touch dry within 3-4 hours. Designed for DIY enthusiasts and professionals, achieving thorough sealing
Multi-Purpose Use: Ideal water sealant for felt shed roofs, asphalt, bitumen surfaces, gutters, drainpipes, concrete, brick, GRP, fiberglass, and metal roofing. Available in Clear, Grey, and Black. Ensures versatility across applications, with a seamless finish for robust protection. Please note: Our paint is not compatible with copper surfaces

Polar Specialist Coatings

Polar Shed Roof Paint - Black 2.5 Litre | Instant Waterproofing Protection for Felt, Shed & Garage Roofs | Smooth & Decorative Finish | Durable Shed Paint for Exterior Use

Free Shipping

Why We Love It

Decorative and smooth finish.
Long-lasting waterproof protection.
Easy one-coat application.

Main Highlights

Waterproof & Hard-Wearing: Polar Shed Paint offers exceptional shed paint waterproof performance by instantly sealing and protecting weathered and leaking roofs. Its durable formula withstands various weather conditions, ensuring long-lasting protection
One Coat Application: Only one coat of clear shed paint is needed. No primer is required before application. A 2.5L covers up to 2.5㎡. Saves time and effort, making roof maintenance straightforward and efficient
Multi-Purpose Exterior Use: Ideal shed roof paint waterproof for both new and weathered pitched felt, fibreglass, and GRP roofs. This versatile paint effectively meets various waterproofing roofing needs and aesthetic preferences
Easy to Use: Clean the area of moss, debris, and surface water. Apply the exterior shed paint with a brush or roller for optimal waterproof protection. Touch dry within 3-4 hours. Designed for ease of use, even for DIY enthusiasts
Attractive Finish: Revive old & tired looking roofs with Polar Shed Roof Paint. Specially formulated waterproof sealant paint helps preserve the longevity of the roof whilst adding a decorative and smooth finish to the surface. Available in black, clear, and anthracite colours

8.8

Excellent

We scanned 1990 products

We reviewed these offers relevant to the Felt Flat Roof Waterproofing Paint 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 Cromapol, SIRAMICO COATINGS, Flag Paints, Bostik, NOVECRAFTO, Polar Specialist Coatings, TekCryl, 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 Flat Roof Waterproofing Paint in the market, we considered we took a deep dive into 9951 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 Cromar Grey Cromapol Acrylic Fibre Reinforced Roof Coat Sealant Paint 4 x 5Kg. We love many things about this product by Cromapol. What sets it apart from the competition is Instant waterproof protection in one coat, Bridges gaps with added fibres, Usable in both dry, damp conditions.
The best value product for most shoppers and where user satisfaction is continuously the highest is Siramico Coatings Liquid Rubber Roof Coating | 5 Litres | Instant Leak Seal Technology I Quick Drying, One Coat Waterproofing Sealant | Black, Grey & Clear (Black, 5 Liters) by SIRAMICO COATINGS based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Felt Flat Roof Waterproofing Paint and the best cost-to-value ratio is Bostik Flexacryl Instant Repair Waterproof Compound for Flat Roofs, Colour: Grey, 5kgat Bostik with a 6% discount.
Our list of the best Felt Flat Roof Waterproofing Paint 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 Flat Roof Waterproofing Paint in The UK

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SIRAMICO COATINGS | Leak Stop Rapid Roof Repair BLACK Paint | 1 Litre | Instant Waterproof Roof Sealant | Perfect for Flat and Pitched Felt, Shed & Garage Roofs | Can Be Applied to Damp Surfaces

We scanned 1990 products

We concluded that: