10 Best Roof Repair Compound in The UK

Last updated on 11/08/2025

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Best Choice

9.8

Exceptional

Bostik

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

Why We Love It

High performance for emergency repairs.
Immediate waterproofing with one application.
Flexible, long-lasting and resilient.

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: Black, 5kg

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

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

All Weather Roofing Compound Bitumen Waterproof Roof Coating 25 Litre

Why We Love It

Easy brush application.
Water resistant instantly.
Enhanced with organic fibre.

Main Highlights

Brush Applied Recommended
Resistant to Water Almost Immediaetly
Master Bitumen All Weather roofing Compound
Colour : Black
Organic Fibre To add Strength And Stability

5 Year Guarantee Against Future leaks. 5 KG One Coat Roof Repair Compound (All roof Types Including Asbestos, Felt, Bitumin, Tiled, GRP) Grey

Why We Love It

Assures long-term material reliability.
Addresses various leakage issues effortlessly.
Application process is user-friendly.

Main Highlights

Acrylic so the repair will last a long time
Water proofs the damaged area quickly and effectively
Brush or Roller Apply Cold Apply No Special Tools Needed
Air drys and shower proof immediately
Gap Fills Cracks and Splits & Elastic Properties Resist Future Cracking

Nassboards - Everbuild Evercryl One Coat Repair Compound - 5 Litre, Fibre Reinforced Sealant for Roof Reparation - Algae and Fungus Resistant, One Coat Roof Repair - Multi Use & Weather Proof

Why We Love It

Protects in all weathers.
Resists algae and fungi.
Applying it is easy.

Main Highlights

ALL WEATHER CONDITIONS: Evercryl One Coat Repair Compound, brought to you by Nassboards, is a resin based, fibre reinforced roof repair compound which is effective on all common roofing surfaces, giving instant roof repairs even in the wet and on wet surfaces and can even be applied in frosty conditions down to -5°C!
PROTECTIVE: This One Coat Repair Compound was especially formulated to resist algae and fungal growth. Not only will it protect your roof from algae and fungi, but water damage as well! Keep your roof protected from anything and everything that mother nature throws at it
EASY TO APPLY: Everbuild Evercryl is brush applied and dries to a smooth consistent flexible membrane. Due to the high level of fibre reinforcement, it will fix small cracks and requires only a one-coat brush application to give instant water protection. Evercryl requires no primer on sound nonporous surfaces
BONUS GIFT: With your purchase, you will not only receive your Everbuild Evercryl One Coat Repair Compound, you will also receive protective gloves as well as a 3-inch brush to help give you expert-level application, as well as expert-level protection
COLOUR OPTIONS: Your Everbuild Evercryl One Coat Repair Compound comes in two colours. Black and Grey, we are confident that any of these two colours will compliment your home’s décor, while still staying protective.

Everbuild Evercryl One Coat Instant Waterproofing – Suitable for Roofs, Gutters and Gulleys – Grey – 5kg

Why We Love It

Quick and easy to use.
Superior sunlight resistance feature.
Instant waterproofing ability.

Main Highlights

QUICK & EASY TO USE – This resin-based, fibre-reinforced roof repair compound covers in one coat with no primer needed. It dries smoothly with no additional curing needed.
VERSATILE – Effective on all common roofing surfaces and types including concrete, fibre/cement, roofing felt, mastic asphalt, slates and brickwork. It's also suitable for on gutters and gullies.
INSTANT WATERPROOFING – Provides instant roof repair even in wet conditions and on wet surfaces. Can be applied in temperatures down to -5°C.
SUPERIOR SUNLIGHT RESISTANCE – Formulated from lightfast acrylic polymers to withstand sunlight for longer periods than traditional bitumen coatings.
PRACTICAL – Fast and easy to apply. Only a one-coat brush application is required to give instant and total water protection, even in areas subject to ponding.
MULTIPLE SIZES AND COLOURS – Available in Grey 1kg, 2.5kg, 5kg and 20kg tins. Black 2.5kg and 5kg tins. White 5kg tin and Translucent 1kg and 5kg tins.

Bond It Trowel Mastic Fibre Filled Bitumen Paint Roof Repair Compound (2.5L)

Why We Love It

Versatile for various surfaces.
Remains flexible after application.
Ideal for large cracks.

Main Highlights

Bond It TROWEL MASTIC is a multi-purpose trowel grade material for waterproofing, stopping, bedding, pointing and sealing.
TROWEL MASTIC can be applied to mastic asphalt, roofing felt, corrugated iron, cast iron, fibre cement, slates, lead, copper, zinc, concrete and timber.
A heavily filled and fibrated bituminous compound that dries to a soft flexible black coating which remains soft and pliable for a long time after application.
All surfaces must be structurally sound, clean, dry and free from surface contaminants such as grease, rust and dirt.
For large cracks and holes apply the compound over the area to be treated and embed a closely woven glass fibre membrane into the compound to overlap the crack or hole by approximately 50mm.

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

30% 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.

Everbuild Evercryl One Coat Instant Waterproofing – Suitable for Roofs, Gutters and Gulleys – Grey – 2.5kg

Why We Love It

Quick and easy application.
Effective on all surfaces.
Superior sunlight resistance.

Main Highlights

QUICK & EASY TO USE – This resin-based, fibre-reinforced roof repair compound covers in one coat with no primer needed. It dries smoothly with no additional curing needed.
VERSATILE – Effective on all common roofing surfaces and types including concrete, fibre/cement, roofing felt, mastic asphalt, slates and brickwork. It's also suitable for on gutters and gullies.
INSTANT WATERPROOFING – Provides instant roof repair even in wet conditions and on wet surfaces. Can be applied in temperatures down to -5°C.
SUPERIOR SUNLIGHT RESISTANCE – Formulated from lightfast acrylic polymers to withstand sunlight for longer periods than traditional bitumen coatings.
PRACTICAL – Fast and easy to apply. Only a one-coat brush application is required to give instant and total water protection, even in areas subject to ponding.
MULTIPLE SIZES AND COLOURS – Available in Grey 1kg, 2.5kg, 5kg and 20kg tins. Black 2.5kg and 5kg tins. White 5kg tin and Translucent 1kg and 5kg tins.
Evercryl One Coat
Size: 2.5KG
Brand: Everbuild

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.

8.7

Excellent

We scanned 1705 products

We reviewed these offers relevant to the Roof Repair Compound 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 Bostik, masterbitumens, binoa, Nassboards, Everbuild, ARA CHOICE, NOVECRAFTO, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Roof Repair Compound in the market, we considered we took a deep dive into 8526 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 Bostik Flexacryl Instant Repair Waterproof Compound for Flat Roofs, Colour: Black, 5kg. We love many things about this product by Bostik. What sets it apart from the competition is High performance for emergency repairs. , Immediate waterproofing with one application. , Flexible, long-lasting and resilient.
The best value product for most shoppers and where user satisfaction is continuously the highest is Bostik Flexacryl Instant Repair Waterproof Compound for Flat Roofs, Colour: Grey, 5kg by Bostik based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Roof Repair Compound 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 30% discount.
Our list of the best Roof Repair Compound 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 Roof Repair Compound in The UK

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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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Everbuild Evercryl One Coat Instant Waterproofing – Suitable for Roofs, Gutters and Gulleys – Grey – 1kg

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We scanned 1705 products

We concluded that: