Guide
Silicone render cost per m2 in 2026
Updated
Silicone thin-coat render, often called K Rend after the best-known brand, typically costs £50 to £80 per m2 supplied and applied on 2026 quotes.
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How this calculator works
- Rates are typical 2026 UK supply-and-fit quotes: sand and cement £40–60 per m2, monocouche £45–70, silicone thin-coat £50–80. Market rates, not regulated prices: region, substrate condition and finish move them.
- House-type areas are typical net render areas (mid-terrace about 60 m2 because side walls are shared, bungalow 90, semi 110, detached 160). Measure yours for a tighter figure: wall length times height, minus large openings.
- Scaffold adds £600–£1,000, the typical 2026 cost for a two-storey house rendering job.
- Excluded: removing old or failed render (typically £20–40 per m2 on 2026 quotes), substrate repairs, and external wall insulation. Insulated render (EWI) is a different job entirely, typically £90–150 per m2 in 2026, see the render types guide.
- Re-rendering more than 50% of an individual wall's surface area counts as renovating a thermal element. Regulation 23 of the Building Regulations 2010 then requires the whole element to meet the Part L standard.
- That applies in so far as it is technically, functionally and economically feasible (guidance in Approved Document L). Budget for that conversation before stripping a solid wall.
- These are typical quote ranges, not a quotation. Renderers price on a look at the walls, always.
Silicone render price per m2 from installers who publish one
Most renderers do not put a rate on their website. Of the 35 installer price pages in our UK render price index, two publish a silicone rate.
Plaster House lists silicone or acrylic render at approximately £80 to £110 per m2. Coloured Rendering South Wales lists silicone render at approximately £60 to £80 per m2. Our calculator uses a typical £50 to £80, the lower end reflecting plain elevations on sound walls.
K Rend cost per m2: what the bag costs
| Product | Merchant | Price as published |
|---|---|---|
| K Rend TC15 silicone, 25 kg | Rendit | £79.69 excl. VAT |
| K Rend TC15 silicone, 25 kg | InsulationGo | £89.14 |
| K Rend Silicone TC30, 25 kg | Rendit | from £91.34 excl. VAT |
| K Rend Mineral TC2, 25 kg | Rendit | from £88.03 excl. VAT |
| Ceresit CT174 silicate silicone, 25 kg | UK Render Supply | £74.40 |
The top coat is only one layer. A silicone system also needs a base coat (K Rend HP12 base coat, 25 kg, is £25.95 at B&Q), mesh, beads and a primer. Labour is most of the installed rate.
Coverage per bag depends on the grain size and the maker's own figure, which we have not yet read. So we do not turn bag prices into a per m2 material cost here. Every price is in our render material price index with the date it was read.
Silicone rendering cost for a whole house
| House | Wall area | Typical total |
|---|---|---|
| Mid-terrace | about 60 m2 | £3,600 to £5,800 |
| 3-bed semi | about 110 m2 | £6,100 to £9,800 |
| 4-bed detached | about 160 m2 | £8,600 to £13,800 |
Each total is the wall area at £50 to £80 per m2 plus £600 to £1,000 of scaffold. Stripping old render, repairs to the wall underneath and detailing sit on top.
Your house is not exactly one of these. Pick silicone in the calculator and enter your own wall area.