What are K-Rend and Weber render systems?
K-Rend and Weber are through-coloured silicone-monocouche render systems made by Saint-Gobain. They combine the durability of monocouche with the hydrophobic, self-cleaning topcoat of silicone. Both are BBA-certified and applied as a full kit.
In entity terms: K-Rend is-a silicone-silicate render system; its application is spray or hand-float; its components are base coat, alkali-resistant mesh, primer and topcoat; its warranty depends on certified-applicator installation.
How much does K-Rend cost per m²?
K-Rend costs £55–£80/m² installed, with Weber slightly lower at £50–£75/m². The finished appearance and lifespan of the two systems are very close.
Why does it matter who applies K-Rend?
K-Rend must be applied by trained, approved applicators to the manufacturer specification to keep the warranty valid. Incorrect prep, thickness or mixed components void cover and shorten the render's life.
Can K-Rend be applied over old render?
K-Rend can be applied over sound existing render; hollow or cracked render is hacked off first. The substrate is tap-tested at survey so the new system bonds correctly.
Frequently asked questions
Typically £55–£80/m² installed; Weber £50–£75/m². The finished look and lifespan are very close.
K-Rend is a polymer-modified, through-coloured silicone system — more flexible, breathable and self-cleaning than traditional sand-and-cement, with no repainting.
To preserve the manufacturer warranty, yes — the system must be applied to specification by approved applicators.
If the existing surface is sound, often yes. If it is hollow or cracked it is hacked off first.