
Questions
Frequently asked questions
Aftercare & warranties
A properly specified system lasts for decades with no maintenance other than occasional pressure washing. Manufacturer warranties are provided on the manufacturer's own terms. The most common cause of premature failure is DIY application under 10mm thick.
Silicone render lasts for decades, with long-term manufacturer warranties provided on the manufacturer's own terms. Because the topcoat is paint-free and self-cleaning, you avoid the 5–10 year repaint cycle of traditional render.
Costs & payment
External wall insulation costs £130–£190 per m² including labour and materials, depending on insulation thickness, system choice and access. Grants of up to £15,000 are available for qualifying homes, and the Energy Saving Trust estimates £300–£500 annual heating savings on a semi-detached property.
Monocouche spray render costs £50–£65 per m² supply-and-fit on a typical UK home. A 3-bed semi works out at £7,500–£10,000 and a 4-bed detached at £11,000–£14,600. Final cost depends on access, substrate condition and chosen finish — every customer gets a free fixed-price quote after a site survey.
Costs are assessed per m² and driven by property size, access, scaffolding, waste disposal and the chosen system. As a guide: monocouche render £50–£65 per m², silicone render £60–£75 per m², and external wall insulation £130–£190 per m² — all including labour and materials.
Silicone costs roughly 25–35% more than monocouche supply-and-fit — £60–£75 per m² against £50–£65. The premium reflects two extra coats (base coat, mesh and finish), a far wider colour range and a longer expected lifespan with no repaint cycle.
Materials & systems
Yes — older solid-wall homes need vapour-permeable systems so moisture can escape rather than being trapped in the wall. We match the system to the substrate: lime-friendly and breathable renders for period properties, modern polymer systems for cavity-wall and blockwork homes.
EWI fixes 60–150mm of insulation board (EPS, mineral wool or phenolic) to the outside of your walls and renders over the top. On a solid-wall home it typically cuts heating bills by 25–40% — the Energy Saving Trust estimates £300–£500 a year on a semi-detached property.
Monocouche is through-coloured — the pigment runs through the full 10–20mm thickness, so it never needs painting and scratches don't show a different colour underneath. Standard palettes from PRB, K Rend and Weber offer around 20–30 shades, from brilliant white to sandstone and grey.
Silicone systems offer well over a thousand colour options — far beyond the smaller monocouche palette. The polymer topcoat is colour-stable and hydrophobic: rain beads off and carries surface dirt with it, keeping the finish clean for decades.
Planning & compliance
Yes — the £600m ACM Cladding Remediation Fund and the £5.1bn Building Safety Fund cover removal and replacement of unsafe cladding on residential buildings over 18 metres, protecting leaseholders from remediation costs. We carry out surveys and fund-compliant remediation work.
Yes — we carry public liability insurance up to £5,000,000, and every installation is covered by manufacturer-backed guarantees across materials and workmanship.
Usually not — re-rendering in a similar finish falls under permitted development for most houses. You DO need consent if the property is listed, in a conservation area with an Article 4 direction, or a flat. External wall insulation that changes the appearance may also need approval — we advise on this at survey, free of charge.
The process
We work year-round. Spring and autumn offer the best curing conditions thanks to moderate temperatures and lower humidity, while winter projects may take slightly longer because render needs specific temperatures to cure — but they often start sooner.
We agree a payment plan based on project size. In general a 40% deposit secures your start date, books the installation team and gets materials delivered to site — the balance follows the schedule agreed in your quote.
EWI on a semi-detached property takes about two weeks. Thin-coat silicone rendering is typically completed in a week, and monocouche spray render takes just 3–4 days on a semi-detached house thanks to the efficiency of the spray pump.
Submit an enquiry through our free online quote form. For a small, simple job we quote from your drawings, sketches or photos. For a larger project we arrange a visit, survey the property and provide a detailed fixed-price quotation by email — usually within 48 working hours.
Rendering is inherently messy work, but we protect your property throughout, minimise disruption and clean up thoroughly afterwards — only minor residual material traces may remain.
Fixtures, pipes and cables need extending or removing to accommodate the new render, plus scaffold access. Our own dedicated team can handle scaffolding, removal and refitting of rainwater pipework and fixtures — usually more cost-effective than hiring subcontractors separately.
Each in-house team runs one project at a time — no rushing between jobs. Summer waiting times can reach two weeks; winter projects often start sooner, and urgent requests are accommodated as swiftly as possible.
Question not answered?
Call us — a working surveyor answers, not a call centre.
