Plasterers apply this wet mixture over brick, concrete, or blockwork to waterproof the exterior and create a smooth or textured surface. The coating protects the underlying structural materials from rain and weathering while improving the building's thermal performance. It is typically applied in multiple coats, including a scratch coat for adhesion and a top coat for appearance.
Heard on the job
We need to render the blockwork on the extension before the cold weather sets in and ruins the mortar.
Insider tip
Applying render in direct sunlight causes it to dry too quickly, leading to shrinkage cracks and poor adhesion.
Also heard as
- stucco