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Thompsons Emergency Roof Seal 2.5L for waterproof repair

Manufactured by Thompson's

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Thompsons Emergency Roof Seal is a high-performance instant waterproofing coating designed to stop leaks fast, even in wet weather. This flexible sealant can be applied directly to damp or moist surfaces, creating a formidable, waterproof barrier that protects roofs, gutters, and flashing from further damage. Its advanced formula adheres securely to a wide range of roofing materials, including felt, asphalt, concrete, slate, tiles, and metal, ensuring reliable protection without the need for primers or complicated preparation.

Ideal for emergency repairs, Thompson's Emergency Roof Seal remains flexible to accommodate natural roof movement, preventing cracks and ensuring long-lasting durability. Its quick-setting technology makes it effective in all seasons, offering immediate defence against rain and harsh weather conditions. Perfect for both domestic and commercial roofs, this ready-to-use product provides a hassle-free solution for fast, dependable leak repairs.

Key Features & Benefits

  • Instant waterproof protection, even during rain

  • Bonds to damp surfaces for emergency repairs

  • Flexible coating resists cracking and movement.

  • Suitable for felt, asphalt, slate, tiles, concrete, and metal

  • No primer required for most surfaces

  • Ideal for roofs, gutters, flashing, and joints

  • Long-lasting weatherproof barrier to stop leaks fast

  • Ready-to-use formula for quick and easy application

Sizes & Coverage
Available in a 2.5 L container
Approximate coverage: up to 1 m² per litre, depending on surface texture and porosity

Why Choose Thompson's Emergency Roof Seal
This emergency roof seal is designed to provide immediate leak protection in all weather conditions, including heavy rain. Its flexible, durable finish outperforms traditional roof coatings, ensuring strong adhesion, long-term waterproofing, and peace of mind when fast action is essential.

Thompsons Emergency Roof Seal is perfect for fast, reliable waterproofing in urgent repair situations. Its advanced formulation makes it suitable for domestic and commercial roofing projects requiring immediate protection.

Roof Repairs
Apply directly to leaking or cracked felt, slate, concrete, asphalt, or tiled roofs to provide instant waterproofing and prevent further water ingress.

Gutters and Flashing
Seal leaks in gutters, downpipes, flashing joints, and roof edges to stop water penetration and protect vulnerable seams.

Emergency Leak Stops
Use during heavy rain or wet weather to provide immediate leak protection when traditional roof coatings cannot be applied.

Flat Roof Maintenance
Repair ponding areas or hairline cracks on flat roofs, balconies, and dormers to create a durable, flexible seal that resists further damage.

Metal Roofs and Corrugated Panels
Protect and seal metal sheeting, corrugated panels, and industrial roofs against rust and water damage.

This ready-to-use roof seal is designed for easy application with a brush, roller, or soft broom. Always ensure the area is free of loose debris, stir thoroughly before use, and apply in long, even strokes. Allow the first coat to dry for maximum durability before adding a second layer.

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Frequently Asked Questions

What surfaces can Emergency Roof Seal be applied to?
It works on felt, slate, concrete, asphalt, tiles, corrugated metal, and gutters. For best results, always clean the surface first.
Can I apply it in wet conditions?
Yes, it can be applied in damp conditions, making it ideal for emergency repairs during rain.
How long does it take to become rainproof?
The seal becomes rainproof in just 6 hours under normal conditions above 10 °C.
How flexible is the product?
It flexes with the natural movement of the roof, helping prevent cracking and peeling.
How many coats are needed?
Typically, two coats are recommended for maximum waterproofing and durability.
How should I apply Emergency Roof Seal?
Use a brush, roller, or soft broom to apply long, even strokes over the repair area.
Can it be used on flat roofs?
Yes, it is suitable for flat roofs, balconies, dormers, and ponding areas.
Does it resist UV damage?
Yes, it is formulated to resist sun exposure, preventing colour fade and degradation.
How long does each coat take to dry?
Allow approximately 6 hours for the first coat to become rainproof before applying a second coat.
How do I clean tools after use?
Clean brushes, rollers, and equipment with warm water and detergent immediately after application.
Can it stop leaks temporarily during heavy rain?
Yes, it provides immediate waterproofing, making it ideal for emergency leak stops.
Is it suitable for metal roofs?
Yes, it can seal and protect metal sheeting and corrugated panels from water damage and rust.
Do I need to prepare the surface before application?
Yes, remove loose debris, dust, and ponded water. Cut open any blisters and repair structural faults if needed.
Can it be applied over old bitumen paint?
Yes, as long as the surface is sound, it adheres well to existing roofing materials, including bitumen coatings.
Is it safe for use on gutters and roof flashing?
Yes, it can seal leaks and cracks in gutters, downpipes, and flashing joints to prevent water ingress.

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Regular price £44.99 (inc VAT)
Tax included Shipping calculated at checkout.
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