10 Best Flat Roof Repair Sealant

10 Best flat roof repair sealant - July 2025

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Last Updated: 13-07-2025

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

Cromapol

9.8

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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

NOVECRAFTO

9.6

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Best value

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

Ashbrook Roofing

9.5

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Waterproof Grey Roof Sealant | Extra Strong Flat and Shed Roof Sealant with Glass Fibers | Fix & Stop Leak for Gutters, Joints, Cracks | Leak Sealer Repair | TopBase ST Fiber | Grey | Made in EU (1kg)

Pandacoat

9.2

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Gorilla 84756 Waterproof Coat & Seal Black 473ml

Gorilla

9.1

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Thompsons 10 Year Roof Seal Grey 1L

Thompson's Water Seal

8.8

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Polar Premium Black Instant Waterproof Felt Roof Sealant Paint 500ml, Emergency Felt Roof Repair Sealer for All Felt Roofs

Polar Specialist Coatings

8.6

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3% Off

Ronseal TERRM750 Thompsons Emergency Roof Repair Mastic 750 ml, Black

Ronseal

8.4

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Bostik Flashband Self Adhesive Flashing Tape for Roofs, Provides an Instant Watertight Seal, Colour: Grey, 100mm x 10m

Bostik

8.2

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

professional soma fix

8.1

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

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

Waterproof Grey Roof Sealant | Extra Strong Flat and Shed Roof Sealant with Glass Fibers | Fix & Stop Leak for Gutters, Joints, Cracks | Leak Sealer Repair | TopBase ST Fiber | Grey | Made in EU (1kg)

Gorilla 84756 Waterproof Coat & Seal Black 473ml

Thompsons 10 Year Roof Seal Grey 1L

Polar Premium Black Instant Waterproof Felt Roof Sealant Paint 500ml, Emergency Felt Roof Repair Sealer for All Felt Roofs

Ronseal TERRM750 Thompsons Emergency Roof Repair Mastic 750 ml, Black

Bostik Flashband Self Adhesive Flashing Tape for Roofs, Provides an Instant Watertight Seal, Colour: Grey, 100mm x 10m

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

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