I've got a job to render a front garden wall, the piers are of brickwork and the wall is of concrete blocks.
Can anyone advise me what ratio of sand and cement to use for the scratch and top coat and whether lime is necessary. Also, what preparation should I do? I've been told not to use PVA externally.
Can anyone advise me what ratio of sand and cement to use for the scratch and top coat and whether lime is necessary. Also, what preparation should I do? I've been told not to use PVA externally.