Background Preparation High Suction Backgrounds
- Brickwork
- Thermalite Blocks
- Celcon Blocks
Require a coat of plaster 5-10mm to kill the suction and keyed with a scratcher to allow another coat to grip, which will not dry in too quickly – also 5-10mm. Then ruled off with a featheredge and devil floated to achieve a flat and keyed finish.