W4 Mastic Sealing Strip can be used for Vents, rooflights, windows and external lights.

Clean the surface of any old sealant, flaking paint, grease or dirt, making sure the area is clean and dry.

Unroll with backing paper intact and apply as required, pressing gently onto joint face. 

Remove backing paper and press other joint firmly on to the strip surface.

Trim surplus

W4 19mm x 5m Sealing Strip

SKU: KK1017A-19