I have encountered some black tacky bitchumen like substance on the brick between the old flashing and the joists (see image).
Obviously, this will cause issues when I eventually try to apply the EPDM / bonding adhesive.
Is there a way to clean this stuff off brickwork, something that won't screw up the bonding adhesive?
Obviously, this will cause issues when I eventually try to apply the EPDM / bonding adhesive.
Is there a way to clean this stuff off brickwork, something that won't screw up the bonding adhesive?