10 Best Black Magic Instant Roof Gutter Repair Sealant in The UK

Last updated on 25/08/2025

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Black Magic Emergency Roof and Gutter Spray 4 x 500ml - Repairs Crack and Leaks - Powerful Bitumen Formula - Easy to Use Formula

Why We Love It

Repairs all hard surface roofs.
Seals damage with industrial strength.
Resistant to cracks and damage.

Main Highlights

The quick and easy way to repair roofs and gutters. SUITABLE FOR USE ON ALL HARD SURFACES SUCH AS FELTED OR ASPHALT ROOFS, GUTTERING, STONE, CONCRETE, SLATE, METALS & WOOD
Uses an industrial-strength bitumen compound to heal any cracks, leaks or other damage instantly
Super hard-wearing and a completely waterproof formula to keep your roof and gutter strong and leak-free
Leaves a flexible coating that is crack and damage resistant. Due to its flexibility, this sealer can be used on felt, asphalt, plastic, metal, stone, concrete, slate, wood and UPVC – allowing you to seal any surface you wish with ease!
Suitable for repairing larger areas if the area is covered with gauze and then sprayed with Black Magic Roof and Gutter Repair

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 Black Felt Seal - 500ml - Instant Waterproof Roof Sealant - Ideal for Flat or Pitched Felt, Shed & Garage Roofs - Easy to Apply

Free Shipping

Why We Love It

Instantly seals emergency leaks.
One coat instant repair.
Easy to apply.

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

Black Magic Emergency Roof and Gutter Spray 2 x 500ml - Repairs Crack and Leaks - Powerful Bitumen Formula - Easy to Use Formula

Why We Love It

Versatile for multiple surfaces.
Instantly repairs leaks.
Long-lasting waterproof formula.

Main Highlights

The quick and easy way to repair roofs and gutters. SUITABLE FOR USE ON ALL HARD SURFACES SUCH AS FELTED OR ASPHALT ROOFS, GUTTERING, STONE, CONCRETE, SLATE, METALS & WOOD
Uses an industrial-strength bitumen compound to heal any cracks, leaks or other damage instantly
Super hard-wearing and a completely waterproof formula to keep your roof and gutter strong and leak-free
Leaves a flexible coating that is crack and damage resistant. Due to its flexibility, this sealer can be used on felt, asphalt, plastic, metal, stone, concrete, slate, wood and UPVC – allowing you to seal any surface you wish with ease!
Suitable for repairing larger areas if the area is covered with gauze and then sprayed with Black Magic Roof and Gutter Repair

6 X Everbuild Roof & Gutter Butyl Sealant Black Waterproof and Sealing

4% Off

Why We Love It

Innovative and efficient solutions.
Sustainable and eco-friendly options.
Trusted since 1927.

Main Highlights

Sika / Everbuild Products offer a full range of products for both the professional market and DIY consumer
Efficient use of energy and natural resources are crucial to sustainable development. Sika aims to minimize the impact on climate change by reducing energy consumption, with the positive effect of lowering costs and increasing competitiveness.
Sika’s objective centers on supplying customers with innovative solutions that boost the efficiency, durability and aesthetic appeal of buildings, infrastructure constructions, installations and vehicles. Sika solutions are developed to help customers to make a positive environmental impact, or to address climate-related concerns.
As a global company, Sika is committed to sustainable development. The company honors its responsibilities by offering sustainable solutions for energy-efficient constructions and environmentlly friendly vehicles. It also implements numerous projects and measures aimed at boosting the Group’s business, social, and ecological sustainability.
Sika Group was established in 1927 and produces and markets a wide range of state-of-the-art systems covering construction products, industrial manufacturing, automotive manufacturing and DIY products ranges

Black Magic Emergency Roof and Gutter Spray 500ml - Repairs Crack and Leaks - Powerful Bitumen Formula - Easy to Use Formula

8% Off

Why We Love It

Industrial-strength for instant repairs.
Completely waterproof, super durable.
Highly flexible, universally applicable.

Main Highlights

The quick and easy way to repair roofs and gutters. SUITABLE FOR USE ON ALL HARD SURFACES SUCH AS FELTED OR ASPHALT ROOFS, GUTTERING, STONE, CONCRETE, SLATE, METALS & WOOD
Uses an industrial-strength bitumen compound to heal any cracks, leaks or other damage instantly
Super hard-wearing and a completely waterproof formula to keep your roof and gutter strong and leak-free
Leaves a flexible coating that is crack and damage resistant. Due to its flexibility, this sealer can be used on felt, asphalt, plastic, metal, stone, concrete, slate, wood and UPVC – allowing you to seal any surface you wish with ease!
Suitable for repairing larger areas if the area is covered with gauze and then sprayed with Black Magic Roof and Gutter Repair

fowong Waterproof Tape Aluminium Foil Butyl Tape, Waterproof Tape for Leaks and Outdoor Use, 50mm(W) x 5M(L) Flashing Tape for Roof Sealant Tape for Repairing Crack, Gutter, RV Repair

36% OffFree Shipping

Why We Love It

Versatile and professional quality.
Durable and environmentally friendly.
Easy installation process.

Main Highlights

PROFESSIONAL FLASH TAPE: The professional sealing tape is suitable for repairing home leaks, cracks in roofs, leaks in windowsills, PVC & plumbing pipes, sprinkler systems, doors, walls, seams, RV roof/awning repair, doors, window sealing down spouts, boats, personal watercraft, canoes, outdoor equipment, RV's & campers, vents, air ducts, HVAC systems, DIY vents, EPDM rubber roof patching
DURABLE SAFE MATERIAL: fowong Butyl seal tape is made of butyl rubber by special processing, non-toxic, no contraction, anti-aging, UV resistant, vapor prevent, safe and odorless. Works well in preventing shakes, sealing, waterproofing, fire retardant and insulation. Self-adhesive Flashing Tape, requires no extra glue
WATERPROOF SEALANT TAPE WITH STRONG ADHESIVE: Instantly stops leaking, never worry about rainy days. Practical repair putty stays strong adhesion on various surfaces as well as heat insulation
LONG LIFETIME AND EASY TO INSTALL: Differ from other Butyl Putty Tape, our White Seam Tape has long service life, gives an excellent seal for a long time. Install quickly without gaps, just peel off the released film and apply the Butyl Sealant Tape to anywhere needed
WORKING ENVIRONMENT: Butyl Seal Tape can be used between -15 °C to 45 °C, high and low temperature resistance, good environmental adaptability

Everbuild 2 X Roof & Gutter Sealant Black 310ml EVBROOFBL

Why We Love It

Durable and efficient products.
Environmentally friendly solutions.
Innovative climate impact initiatives.

Main Highlights

Sika / Everbuild Products offer a full range of products for both the professional market and DIY consumer
Efficient use of energy and natural resources are crucial to sustainable development. Sika aims to minimize the impact on climate change by reducing energy consumption, with the positive effect of lowering costs and increasing competitiveness.
Sika’s objective centers on supplying customers with innovative solutions that boost the efficiency, durability and aesthetic appeal of buildings, infrastructure constructions, installations and vehicles. Sika solutions are developed to help customers to make a positive environmental impact, or to address climate-related concerns.
As a global company, Sika is committed to sustainable development. The company honors its responsibilities by offering sustainable solutions for energy-efficient constructions and environmentlly friendly vehicles. It also implements numerous projects and measures aimed at boosting the Group’s business, social, and ecological sustainability.
Sika Group was established in 1927 and produces and markets a wide range of state-of-the-art systems covering construction products, industrial manufacturing, automotive manufacturing and DIY products ranges

Ideal for emergency repairs.
Use on multiple surfaces.
Simple, fast application.

Main Highlights

ULTIMATE WATERPROOF SEALANT: Stop Leak Sealer Spray provides advanced, long-lasting leak protection for gutters, flat roofs, and more. Jenolite's waterproofing sealant can be trusted to act as an instant leak sealer. Perfect for fast-fix repairs and protection for guttering, flat roofs, shed roofs, drain pipes, caravans and more.
VERSATILE USAGE: Formulated for multi-surface application, Jenolite Stop Leak Sealer Spray can be used on a wide range of surfaces, including plastic, tile, metal, UPVC, Concrete, roofing felt and more. Ideal for use as a leaking gutter seal, the waterproof sealant spray is also perfect for fixing leaks in felt roofs, conservatories, sheds, etc.
WEATHER-RESISTANT DURABILITY: The waterproofing spray is designed to withstand extreme weather conditions UV rays and extreme temperatures, this premium leak sealer maintains its strength and flexibility over time, keeping your gutters and roofs leak-free year-round.
QUICK & EASY APPLICATION: Simple to apply, the waterproofing spray offers a fast solution to dealing with small cracks and leaks, just aim and spray, building up several layers for maximum effect. (It is not recommended for bird baths, ponds, central heating systems or pressurised plumbing systems)
MADE IN BRITAIN: Pioneers in surface treatment and protection ,JENOLITE’s Stop Leak Sealer Spray combines cutting-edge innovation with decades of expertise to deliver a product you can rely on for lasting, professional-grade results. Available in CLEAR | BLACK | WHITE

Polar Specialist Coatings

Polar Black Leak Fix Spray - 400ml - Waterproof Roof Sealant - Instantly Seals Leaks and Cracks, for Lasting Protection on Roofs, Drainpipes and Gutter Repairs, for Internal and Exterior Use

Free Shipping

Why We Love It

Instant waterproof sealant spray.
Long lasting protection guaranteed.
Ideal for emergency fixes.

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

9.0

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We scanned 1016 products

We reviewed these offers relevant to the Black Magic Instant Roof Gutter 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 Pro-Kleen, Everbuild, Polar Specialist Coatings, Black Magic, fowong, JENOLITE, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Black Magic Instant Roof Gutter Repair Sealant in the market, we considered we took a deep dive into 5081 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 Black Magic Emergency Roof and Gutter Spray 4 x 500ml - Repairs Crack and Leaks - Powerful Bitumen Formula - Easy to Use Formula. We love many things about this product by Pro-Kleen. What sets it apart from the competition is Repairs all hard surface roofs, Seals damage with industrial strength, Resistant to cracks and damage.
The best value product for most shoppers and where user satisfaction is continuously the highest is Everbuild Black Jack 905 – All Weather Roof Coating – Solvent-Based – Fibre-Reinforced – Fast Drying – Weatherproof – Black – 5 Litre by Everbuild based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Black Magic Instant Roof Gutter Repair Sealant and the best cost-to-value ratio is fowong Waterproof Tape Aluminium Foil Butyl Tape, Waterproof Tape for Leaks and Outdoor Use, 50mm(W) x 5M(L) Flashing Tape for Roof Sealant Tape for Repairing Crack, Gutter, RV Repairat fowong with a 36% discount.
Our list of the best Black Magic Instant Roof Gutter 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 Black Magic Instant Roof Gutter Repair Sealant in The UK

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We scanned 1016 products

We concluded that: