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Bostik Flashband Self Adhesive Flashing Tape for Roofs Grey -50mm x 10m - Provides an Instant Watertight Seal

Bostik Flashband Self Adhesive Flashing Tape for Roofs Grey -50mm x 10m - Provides an Instant Watertight Seal

Q: Can this be used to patch a small hole, internally, within an attic space?

All depends upon the size of the hole, it will adhere to the underside of the tiles or slates, but you will have to cut a piece large enough to ensure it has enough surface area to stick all around the hole permanently.

Q: Can you use it when wet

You can use it in the wet but best seal is created when everything is dry, I would wait for a dry day to ensure everything is dry then the joint is likely to stay dry for longer.

Q: Would this react with treated timber? Want to use it to protect the top of the joists on my decking to prolong the life.

Flashband works better on outside areas gutters chimney flashings anything exposed to weather for joists use a paint on product Cuprinol maybe

Product ID: 53127764

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Details

Brand
Bostik
Colour
Grey
Material
Lamination
Number of items
1
Recommended uses for product
Metal

🧱Bonds to most building materials

🌧️All-weather flexible bitumen

🛠️Instant watertight seal

Description

🛠️ Seal it fast, seal it smart — never let a leak cramp your style!

COMPACT READY TO USE - 50mm x 10m grey tape, lightweight and portable for on-the-go fixes.
EFFORTLESS APPLICATION - Applies easily by hand and seam roller—no special tools or expertise needed.
UNIVERSAL BONDING POWER - Adheres securely to brick, metal, tiles, roofing felt, and more for versatile use.
INSTANT WATERTIGHT PROTECTION - Seals leaks immediately with no drying time—perfect for urgent roof repairs.
DURABLE ALL CLIMATE PERFORMANCE - Flexible bitumen strip withstands extreme weather conditions year-round.

Bostik Flashband is a self-adhesive, flexible bitumen tape designed for instant, permanent watertight sealing on roofs. Measuring 50mm by 10m, it bonds effortlessly to a wide range of building materials without special tools, making it the go-to solution for quick repairs and long-lasting protection in any climate.

Specifications

Manufacturer	Bostik
Part number	196506
Item Weight	640 g
Product Dimensions	5.21 x 15.01 x 15.01 cm; 640 g
Item model number	196506
Size	50mm
Colour	Grey
Style	Single
Material	Lamination
Item thickness	Not applicable Millimetres
Item Package Quantity	1
Measurement System	Metric
Special Features	Self Adhering
Included components	1x Bostik Flashband Self Adhesive Flashing Tape for Roofs
Batteries included?	No
Batteries Required?	No

Have a Question? See What Others Asked

Can this be used to patch a small hole, internally, within an attic space?

Can you use it when wet

Will this adhere satisfactorily to the outside of an asbestos style roof?

Would this react with treated timber? Want to use it to protect the top of the joists on my decking to prolong the life.

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