Building defects database - Cavity construction

Record details

	The bottom edge of the cavity tray stops short of the outer face of brickwork. Sealed weepholes and the incomplete link to the flashing prevent or at least restrict water drainage from the cavity, which then is free to pass under the tray to the inside.
	The lead flashing has been removed to expose the top of the upstand. Water trapped behind the flashing can only run down the face of the brick to be held by the poorly bonded felt against the bedding joint. The flashing had also been stuck to the upstand, further restricting drainage.