Silicone Render vs Monocouche: Which Is Right for Your House?

Modern coloured renders have replaced painted sand-and-cement on most new builds and refurbishments. The two systems we install most often are silicone thin-coat render and monocouche. They look similar when finished but behave very differently.

Silicone thin-coat render

A 2–3mm topcoat applied over an EWI basecoat with mesh. It's flexible, breathable, self-cleaning and stays looking sharp for 20+ years. Colours are mixed at the factory so there's no painting. It handles the wet Shropshire winters extremely well because rain beads off rather than soaking in.

Best for

• Modern finishes and bold colours
• Homes that have had external wall insulation fitted
• Owners who don't want to repaint every 5–7 years

Monocouche

A through-coloured one-coat render, around 15mm thick, scraped back to reveal a fine textured finish. Cheaper per square metre than silicone and very common on new builds.

Watch-outs

Monocouche is more rigid, so movement cracks are more visible — especially around openings if bead detailing is rushed. Colours are also slightly more limited and can look chalky after a few years on north-facing walls.

Our recommendation

For most Shrewsbury homeowners replacing tired pebbledash or repainted render, we recommend silicone thin-coat. The long-term finish and crack resistance justify the higher upfront cost. Monocouche still has a place on new-build extensions where budget is tight and the substrate is dead flat.

Not sure which suits your property? Send us a photo and we'll give an honest recommendation.