> >

Mortar flashing

Cost: Difficulty:


Mortar flashing

Triangular fillets of cement mortar can crumble and allow water to penetrate. Gaps may appear where the flashing has come away from the brickwork. Use a cold chisel and club hammer to remove the old mortar. Repair the defective area with a 1 : 3, cement ; sand mix, adding a little PVA adhesive to help it bond to the remaining surface. This will give a satisfactory seal, but for a more permanent seal use bituminous mastic. This can be applied directly from the tin using a builder’s trowel or can be applied with an applicator gun.

Need help or supplies?

Further help required?

Our forum is the perfect place to ask questions and get help. Join us, post your question/comment now!