Solid wall insulation · Surrey
Solid wall insulation in Guildford
If you're planning solid wall insulation in Guildford, start with a free survey: we measure, check the walls and confirm planning and building control for your address. For solid-walled homes in Guildford, we check wall thickness and age first to confirm there's no cavity to fill.
- Free survey in GU1 and nearby
- Guide price from £75 per m² + scaffold, 0% VAT
- Fixed written price before work starts
Free survey in Guildford
Postcode, service and a phone number is all we need.
What's included
- Breathable options for stone and lime-mortared walls
- Both can be done in stages, elevation by elevation or room by room
- Solid walls can lose heat roughly twice as fast as an insulated cavity wall
- External insulation keeps room sizes and treats cold bridges well
Before we quote in Guildford
Surveys in Guildford also cover the surrounding GU1 district and towns such as Godalming and Woking. Guildford is about 6 miles from Woking. Homes across the South East range from inter-war semis and post-war estates, which are mostly cavity-walled, to older solid-walled cottages and Victorian town terraces.
Much of Surrey sits in the lower wind-driven rain exposure bands, which keeps the choice of finishes wide — though hilltop, coastal and exposed gable walls can still need a tougher specification, so we check the actual site.
For Guildford homeowners weighing external against internal insulation, the survey sets out both with prices.
- Postcode district
- GU1
- County or area
- Surrey
- Nation
- England
- Nearby
- Godalming, Woking, Aldershot, Farnborough
Planning and building control in England
Before quoting in Guildford, we check whether the property is in a conservation area, under an Article 4 direction or listed, because that decides whether changing the outside needs planning permission.
Insulating or re-rendering more than half of a wall's area brings in Part L of the Building Regulations, so building control is notified and the wall is upgraded to about 0.30 W/m²K where practical.
What does solid wall insulation cost?
External systems run at roughly £105–£210 per m² of wall depending on the board and finish. Internal insulation is roughly £75–£130 per m², plus the cost of moving radiators, sockets and kitchen units.
Solid wall insulation prices in Guildford
| Item | Guide price | Notes |
|---|---|---|
| External (EWI) | £105–£210 per m²0% VAT | By board and finish |
| Internal (IWI) | £75–£130 per m²0% VAT | Plus making good |
| Survey and written recommendation | Free with a quote |
Confirmed by a fixed written quote after survey. 0% VAT: installing insulation in a home is zero-rated until 31 March 2027, so these figures are the total; 5% applies from 1 April 2027.
From enquiry to finished wall
Enquiry
Send your postcode and a few details.
Measured survey
Walls, damp, eaves, cills and services recorded.
Written price
A fixed price with the specification attached.
Work and handover
Installed, inspected and documents handed over.
Solid wall insulation in Guildford: questions
Is solid wall insulation worth it?
For many solid-walled homes it's one of the biggest single improvements to comfort, because the walls are often the largest heat-loss area. Savings depend on the home and heating, so we don't promise a figure.
Does solid wall insulation cause condensation?
It can if detailed poorly, particularly internally. A condensation risk check for the proposed build-up and careful detailing at joists, reveals and corners avoid it.
Can I get a grant for solid wall insulation?
Some schemes cover it for eligible households — for example ECO4 until 31 December 2026, Home Energy Scotland's grant and loan, Wales' Warm Homes Nest and NI's Affordable Warmth Scheme. Each has its own eligibility and installer rules; see our grants guide.
Do you cover Guildford?
Yes — we survey and quote solid wall insulation in Guildford (GU1) and nearby Godalming, Woking and Aldershot, with a fixed written price before any work starts.