Spray cork vs render
Both finishes cover an existing wall and change how it looks and weathers. The right choice depends on the wall you already have, your budget and the finish you want.
The table below compares them on the criteria homeowners ask about most.
Last updated
Side by side
| Criterion | Spray cork | Traditional render |
|---|---|---|
| Cost | Higher — typically £38–£65 per m² including preparation | Lower — commonly £25–£50 per m² depending on system |
| Durability | Flexible coating that bridges fine hairline cracks | Rigid; cement-based systems can crack with movement |
| Appearance | Granular, matte, warm texture in a limited palette | Smooth, scraped or pebbled in a very wide colour range |
| Maintenance | Low — occasional gentle wash, no repainting expected | Medium — painted systems need periodic repainting |
| Waterproofing | Water-shedding while remaining vapour permeable | Silicone renders shed water well; cement renders less forgiving |
| Insulation | Modest thermal contribution; not certified wall insulation | Minimal unless combined with an insulated render system |
| Lifespan | Typically quoted at 20–30 years | Typically 25–40 years when correctly applied |
| Potential disadvantages | Cost, installer-dependent finish, very hard to remove | Cracking, repainting cycle, less suited to damp solid walls |
Figures on this page are indicative ranges gathered from publicly advertised UK pricing and homeowner reports. Always get written quotes for your own property.
Which is best for your property?
There is no universal winner. Match the finish to the wall you have rather than to the marketing you read.
- Sound modern walls, tight budget, wide colour choice needed → render is usually the sensible option.
- Older solid walls that must stay breathable → spray cork is worth quoting.
- Tired pebbledash you would rather cover than remove → spray cork handles the texture well.
- Measurable reduction in heat loss is the goal → look at certified external wall insulation instead.
- Fine, stable hairline cracking → spray cork's flexibility is an advantage.
Not sure which suits your walls?
Get an indicative range first, or ask installers covering your area.
Calculate Your Spray Cork Cost