What is Rendering?
Rendering is a cement-based coating applied to brick, block or other masonry substrates to create a smooth or textured finish. Many Newcastle homes — particularly older brick veneer and double-brick properties — have rendered exterior walls.
Signs Your Render Needs Attention Before Painting
- Cracks wider than 1mm (especially diagonal cracks which suggest movement)
- Hollow sections — tap the wall and listen for a different sound
- Areas where render is lifting away from the substrate
- Efflorescence (white salt deposits) indicating moisture penetration
Hairline Cracks vs Structural Cracks
Small hairline cracks from normal thermal movement can be filled with flexible filler and painted. Larger cracks or those reappearing after previous repairs may indicate foundation movement and should be assessed by a builder before painting.
Who Does What?
Renderers and painters are separate trades. Some painting contractors (including us) handle minor render patching as part of a paint project. Significant rendering work is subcontracted to a qualified renderer.
The Right Sequence
Render, then paint — always. New render needs to cure for at least 28 days before painting. Painting too early traps moisture and causes blistering.
What to Tell Your Painter
Point out all cracked and damaged areas when getting your quote. A thorough painter will identify these anyway, but the more information you provide upfront, the more accurate your quote will be.