Solid wall insulation · Greater Glasgow
Solid wall insulation in Renfrew
If you're planning solid wall insulation in Renfrew, start with a free survey: we measure, check the walls and confirm planning and building control for your address. On solid-walled houses in Renfrew, the gable or the most weather-exposed wall is often the place to start.
- Free survey in PA4 and nearby
- Guide price from £75 per m² + scaffold, 0% VAT
- Fixed written price before work starts
Free survey in Renfrew
Postcode, service and a phone number is all we need.
What you get
- Internal insulation suits single rooms or where the outside can't change
- Solid walls can lose heat roughly twice as fast as an insulated cavity wall
- Both can be done in stages, elevation by elevation or room by room
- External insulation keeps room sizes and treats cold bridges well

Homes and walls in Renfrew
Surveys in Renfrew also cover the surrounding PA4 district and towns such as Clydebank and Paisley. Renfrew is about 5 miles from Glasgow. West Central Scotland has sandstone tenements, interwar and post-war council housing including no-fines and other system-built types, and many harled (roughcast) houses.
Parts of Greater Glasgow fall in the higher wind-driven rain exposure bands, especially coastal and upland sites, so render specification, movement joints and detailing at cills, verges and the base of the wall matter more than usual.
For Renfrew homeowners weighing external against internal insulation, the survey sets out both with prices.
- Postcode district
- PA4
- County or area
- Greater Glasgow
- Nation
- Scotland
- Nearby
- Clydebank, Paisley, Bearsden, Glasgow
Approvals in Scotland
In Scotland, permitted development for external wall changes is narrower, so in Renfrew we check with the council's planning team where the appearance changes, and always for flats, tenements and conservation areas.
Scotland's building standards cover changes to external wall construction; we check whether your job in Renfrew needs a warrant.
How can I tell if my walls are solid?
Measure the wall thickness at a window or door: about 225mm (9 inches) of brick usually means solid, while 260mm or more often means a cavity. On exposed brick, a pattern with bricks laid end-on (headers) every few courses points to solid construction. Stone walls are usually solid regardless of thickness. Age is a strong clue too — most homes built before the 1920s are solid-walled.
Solid wall insulation prices in Renfrew
| 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.
How it works
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 Renfrew: questions
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 do one wall at a time?
Yes. Many owners start with the coldest or most exposed elevation, often a gable end.
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.
Do you cover Renfrew?
Yes — we survey and quote solid wall insulation in Renfrew (PA4) and nearby Clydebank, Paisley and Bearsden, with a fixed written price before any work starts.