Self Adhesive Flashing Tape

Thompsons Self Adhesive Flashing Tape provides an instant waterproof seal to all roofing materials including metal, wood, glass, stone and timber. It's ready to use and quick and easy to apply, making it ideal for sealing leaks in Gutters, Downpipes, Roofing & Timber Joints


Instant waterproof protection

Four layers of protection

Can be applied in damp conditions

Ideal for sealing leaks in Gutters, Downpipes, Roofing & Timber Joints

Suitable for use on:

All roofing material including metal, wood, glass, stone & timberS

Stockists near you

Weather forecast

Please share your location to receive an accurate weather forecast



Come rain or shine, Thompson's got it covered




m2 / litre




For best results, surfaces should be smooth, clean and dry before application.

Porous or rough surfaces should be primed first with Thompson’s Bitumen Primer. This should be allowed to dry before application.

Cut the flashing tape to the required length.

Remove the release film and press down onto the surface.

Ensure full contact has been made by smoothing down with a cloth, taking care to eliminate air bubbles.

Ensure the edges have been thoroughly sealed by using a wallpaper roller over the edges of the tape.

All overlaps should be a minimum of 25mm and well rolled down.