Is it acceptable to leave vertical gaps in brickwork every so often in order to allow for drainage. Both patio and path are raised with the surrounding garden some 2 ft below. I have built a low retaining wall (3 bricks high) above the proposed level of the flags, around the path and patio, and will lay flags sloping towards the wall.
(Edited by Ron Farnsworth at 1:14 am on Aug. 5, 2003)