How Much Does Silicone Render Cost?
Silicone rendering a typical UK home costs between £10,000 and £30,000+ depending on property size, with the most common job — a semi-detached or medium terrace — sitting in the £10,000–£16,000 range. A medium detached home typically costs £24,000–£30,000 including scaffold. Large detached properties can exceed £40,000 once all costs are properly accounted for.
The important caveat — covered in detail below — is that silicone render quotes frequently exclude scaffolding, hack-off of existing render and substrate repairs. These additions can push the final cost significantly above the headline figure. Understanding the full picture before committing is essential.
Pinnacle Wall Coatings doesn't apply silicone render — we apply exterior wall coatings, which achieve the same weatherproofing outcome at approximately half the cost. This guide covers silicone render pricing honestly, and introduces the comparison so you can make an informed decision.
Silicone Render Costs by Property Type
The following prices reflect current market rates across England and Wales for silicone render including scaffolding. They exclude hack-off of existing render where required — which is frequently needed and adds a further £1,000–£4,000.
| Property Type | Silicone Render (incl. scaffold) | Add for Hack-Off if Needed | Realistic All-In Total |
|---|---|---|---|
| 1 wall only | £7,000 – £10,000 | £500 – £1,500 | £7,500 – £11,500 |
| Mid terrace / semi-detached / bungalow | £10,000 – £16,000 | £1,000 – £2,500 | £11,000 – £18,500 |
| Small detached | £16,000 – £24,000 | £1,500 – £3,000 | £17,500 – £27,000 |
| Medium detached (3/4 walls) | £24,000 – £30,000 | £2,000 – £4,000 | £26,000 – £34,000 |
| Large detached (4 walls+) | £30,000 – £40,000+ | £2,500 – £5,000+ | £32,500 – £45,000+ |
Before accepting any silicone render quote: confirm in writing whether scaffolding, hack-off of existing render, substrate repairs and waste removal are all included. These are routinely excluded and can add £4,000–£9,000 to the headline figure.
What Is Silicone Render and Why Is It Popular?
Silicone render is a polymer-modified exterior render system that uses silicone resins to deliver flexibility, water repellency and breathability — significant improvements over traditional cement render. It is applied in one or two coats over a prepared substrate, comes through-coloured in a wide range of shades, and doesn't require painting after application.
It became the dominant residential rendering specification in the UK over the past decade because it addresses the most common failure modes of cement render: cracking from building movement (silicone render is more flexible) and water absorption (silicone render repels rather than absorbs). Properly applied to a sound substrate, it can last 20–25 years.
The contractor guarantee on silicone rendering is typically 10 years. For a full overview of how silicone render compares directly to a wall coating, see our silicone render vs wall coating guide.
What Affects Silicone Render Cost?
Beyond property size, several factors can move your silicone render cost significantly within or beyond the ranges above:
Substrate condition
The biggest variable. If existing render is failing, hollow or incompatible, it must be hacked off before new render can be applied — adding £1,000–£4,000. A contractor who doesn't assess the substrate before quoting is providing an incomplete price.
Property access and height
Complex scaffold requirements — steep plots, restricted vehicle access, three-storey sections, conservatory lifts — increase both scaffold cost and erection time. Always confirm scaffold is included in your quote.
Number of elevations
A terraced home has two external walls; a detached has four plus any returns or extensions. Each additional elevation adds material, labour and scaffold reach. The difference in cost between a compact terrace and a large detached reflects this directly.
Render system specification
Standard silicone render, specialist textured finishes and premium through-colour systems vary in cost. A two-coat system costs more than a single-coat application. The specification should be confirmed in writing before you agree any quote.
Regional labour rates
Silicone rendering in London and the South East typically costs 15–25% more than equivalent work in the Midlands, Wales or the North of England. Coastal properties may also require additional preparation due to salt exposure.
Time on scaffold
Silicone render requires scaffold for the entire project — typically 2–4 weeks. Extended scaffold hire increases cost, and delays caused by weather can extend the rental period further. Confirm whether the scaffold hire period is fixed in your quote.
The Hidden Costs of Silicone Rendering
This pattern is consistent across the UK rendering market — headline quotes frequently exclude costs that are unavoidable parts of the real project:
Hidden Silicone Render Costs to Confirm Upfront
Combined, these exclusions can add £3,500–£11,000 to a headline silicone render price. Always ask each contractor to confirm their quote is all-inclusive before comparing figures.
Before You Commit to Silicone Render — Read This
If the prices above are higher than you expected, it's worth understanding that there is a well-established alternative that delivers the same waterproofing and visual transformation at approximately half the cost — with a longer guarantee and significantly less disruption.
A Pinnacle exterior wall coating is applied over your existing exterior surface without removal in most cases. Cracks are repaired as part of the preparation process at no extra charge. The coating is fully waterproof, breathable and self-cleaning. It is applied by our own employed teams in 3–5 days on scaffold and carries our 20-year no-quibble guarantee.
| Property Type | Silicone Render (all-in realistic) | Pinnacle Wall Coating (all-in) | Saving |
|---|---|---|---|
| 1 wall only | £7,500 – £11,500 | £3,500 – £5,000 | ~50% |
| Semi-detached / bungalow | £11,000 – £18,500 | £5,000 – £8,000 | ~50% |
| Small detached | £17,500 – £27,000 | £8,000 – £12,000 | ~50% |
| Medium detached | £26,000 – £34,000 | £12,000 – £15,000 | ~50% |
| Large detached | £32,500 – £45,000+ | £15,000+ | ~50% |
The wall coating prices above are all-inclusive fixed prices — scaffolding, preparation, crack repairs, primer, coating and the 20-year guarantee are all included. The price confirmed after the free survey is the price you pay. No hidden additions.
The wall coating also carries a 20-year no-quibble guarantee compared to the standard 10-year guarantee from most silicone rendering contractors. For the full head-to-head comparison see our silicone render vs wall coating guide.
The Pinnacle wall coating is approximately half the cost of like-for-like silicone rendering — with a 20-year no-quibble guarantee, 3–5 days on scaffold and a fixed all-in price. Free survey across England and Wales with no obligation to proceed.
How Long Does Silicone Render Last?
Quality silicone render correctly applied to a properly prepared substrate can last 20–25 years before significant deterioration. This is the theoretical lifespan under ideal conditions. Real-world performance varies considerably depending on application quality, the UK climate conditions your property faces, and the substrate preparation carried out before rendering.
UK coastal properties — in Devon, Cornwall, Norfolk, Suffolk, Wales and Yorkshire coastal areas — face salt-laden air and higher rainfall that accelerates surface degradation. North-facing elevations retain more moisture and are prone to faster algae growth. Properties at altitude or in high-exposure locations similarly face more demanding conditions than the theoretical lifespan assumes.
The contractor guarantee on silicone rendering is typically 10 years. For the full longevity comparison between silicone render and wall coating, see our silicone render vs wall coating comparison.
Silicone Render on Pebbledash — What Does It Cost?
Pebbledash properties add a significant layer of complexity and cost to silicone rendering. Rendering over existing pebbledash is possible if the pebbledash is firmly adhered, but carries adhesion risks — the render bond is only as strong as the pebbledash beneath. Many rendering contractors recommend pebbledash removal before rendering, adding £2,000–£6,000 to the project cost before any render is applied.
A wall coating applied directly over intact pebbledash achieves the same waterproof, transformed exterior without removal. For pebbledash properties, the cost saving of the wall coating route over silicone rendering is even more pronounced — potentially £5,000–£12,000 lower on a medium detached home once pebbledash removal is factored into the rendering cost.
How to Get Silicone Render Quotes You Can Actually Compare
- Always get the substrate assessed before any price is agreed — a quote produced without physically tapping the render to check adhesion is incomplete.
- Confirm scaffolding is included — ask specifically. Get confirmation in writing.
- Ask whether hack-off is needed and whether it's in the price — this is the most common source of post-agreement cost surprises.
- Specify the render system — ask each contractor to quote for the same product. You cannot compare a cement render quote against a silicone render quote.
- Get the guarantee terms in writing — length, what it covers, what the claims process involves.
- Ask whether their own employees will do the work — subcontracted rendering affects quality control and accountability.
- Get at least three quotes — not to find the cheapest, but to identify the realistic market range and spot any quotes that are significantly incomplete.
When Silicone Render Is the Right Choice
We give honest advice. There are genuine situations where silicone rendering is the more appropriate solution:
- Substrate completely failing — if existing render is delaminating extensively and the wall face is significantly damaged, a full re-render may be required before any coating can be applied.
- New build or bare blockwork — properties with no existing exterior finish need render for the first time. A wall coating requires an existing surface.
- Specific smooth flush finish on bare or deeply textured substrate — where a coating following the existing surface profile wouldn't deliver the appearance required.
For all other properties with an existing exterior finish in reasonable structural condition, a wall coating consistently delivers the same outcome at approximately half the cost. Our free survey will tell you honestly which category your property falls into. See the complete comparison at our rendering alternatives complete guide.
Comprehensive Guides — All Related Topics
Frequently Asked Questions
Silicone render typically costs £45–£90 per square metre for supply and application, excluding scaffolding and hack-off. However, per-square-metre rates can be misleading for total project cost — scaffold, mobilisation and setup don't scale linearly with area. A fixed all-in job price is more useful for comparison. A Pinnacle wall coating costs approximately £25–£50 per square metre all-in including scaffold, preparation and 20-year guarantee.
Yes — a Pinnacle exterior wall coating costs approximately half the price of like-for-like silicone rendering on an all-in basis, and carries a 20-year no-quibble guarantee compared to the standard 10-year guarantee from most rendering contractors. It is applied over your existing surface without removal in most cases, takes 3–5 days on scaffold rather than 2–4 weeks, and is delivered as a fixed all-in price with no hidden additions. See our full comparison guide.
Silicone rendering a typical detached property takes 2–4 weeks from scaffold erection to removal, including substrate preparation, hack-off if required, render application and curing time. Scaffold is required for the full duration. By comparison, a Pinnacle wall coating takes 3–5 days on scaffold for most properties — the entire job completed in a single continuous visit.
Yes — for any two-storey or taller property, full scaffold is required for safe access to all elevations and to work the wet render correctly. Scaffold is frequently excluded from headline silicone render quotes. Always confirm whether it's included before comparing prices. Pinnacle wall coating quotes always include scaffolding in the fixed price.
Sometimes — if the existing render is firmly adhered, compatible with the new system and in reasonable condition. Where the existing render is failing, crumbling or incompatible, it must be removed before new render can be applied. This needs substrate assessment before quoting. A Pinnacle wall coating can be applied over most existing surfaces in reasonable condition — cracks are repaired as part of preparation and no removal is required in most cases.
Silicone rendering a semi-detached house typically costs £10,000–£16,000 including scaffold. If existing render needs hacking off first, add £1,000–£2,500. The realistic all-in cost is therefore £11,000–£18,500 for most semi-detached properties across England and Wales. A Pinnacle wall coating for the same property costs £5,000–£8,000 all-in — approximately half the price with a 20-year no-quibble guarantee included.
Silicone render is a good product that performs significantly better than cement render or masonry paint. Whether it represents good value depends on your property's specific situation. For most UK homes with an existing exterior finish, a wall coating delivers comparable performance at approximately half the cost — which raises the question of whether the additional spend on rendering is justified. The honest answer is: get both prices before deciding. Our free survey across England and Wales costs nothing and carries no obligation.
Yes — Pinnacle covers all of England and Wales. Use our suitability checker or call us free on 0333 772 3623 to confirm coverage for your specific area and arrange a free no-obligation survey. The survey is free regardless of whether you decide to proceed.
Get a Free All-In Wall Coating Price to Compare
Our free suitability checker covers all of England and Wales — takes less than 60 seconds. Get a fixed all-in price to compare against any silicone render quotes you've received. No obligation to proceed.
