Internal wall insulation · County Durham
Internal wall insulation in Darlington
Internal wall insulation in Darlington: free survey, written specification and a fixed price, with the details that keep walls dry planned from the start. For terraced homes in Darlington with attractive brick fronts, one approach is to insulate the front internally and the rear externally.
- Free survey in DL3 and nearby
- Guide price from £75 per m² 0% VAT
- Fixed written price before work starts
Free survey in Darlington
Postcode, service and a phone number is all we need.
Included as standard
- Insulated plasterboard, stud wall or breathable systems
- Loses roughly 50–100mm per insulated wall
- Keeps the outside of the house exactly as it is
- Needs careful detailing at floor joists, reveals and corners
What we look for in Darlington
We cover Darlington and nearby Newton Aycliffe, Stockton-on-Tees and Thornaby-on-Tees. The North East has many solid brick terraces, including former colliery housing, plus post-war council estates with some system-built homes.
Exposure to wind-driven rain varies across County Durham: sheltered town streets fare better than walls on high ground or facing the prevailing weather, and the render, beads and cill details are chosen with that in mind.
We plan internal insulation in Darlington homes room by room so you keep the rest of the house usable.
- Postcode district
- DL3
- County or area
- County Durham
- Nation
- England
- Nearby
- Newton Aycliffe, Stockton-on-Tees, Thornaby-on-Tees, Bishop Auckland
England: planning and regulations
Planning isn't usually involved with internal insulation. Building control is, once more than half of a wall is treated, and listed buildings need listed building consent.
What are the options for internal insulation?
- Insulated plasterboard — PIR or phenolic foam bonded to plasterboard, fixed to the wall and skimmed. Thinnest option.
- Insulated stud wall — a timber or metal frame filled with insulation, with a vapour control layer and plasterboard. Takes more space but runs services easily.
- Wood fibre and lime — breathable boards finished in lime plaster, for older walls that need to manage moisture.
Internal wall insulation prices in Darlington
| Item | Guide price | Notes |
|---|---|---|
| Insulated plasterboard, supplied and skimmed | £75–£110 per m²0% VAT | |
| Insulated stud wall | £90–£130 per m²0% VAT | |
| Typical bedroom, one external wall | £1,795–£2,9950% VAT | Including making good |
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.
Internal wall insulation in Darlington: questions
Is internal insulation cheaper than external?
Per m² usually yes, but the cost of moving fittings and redecorating narrows the gap on whole-house jobs.
How much room space will I lose?
Usually 50–100mm on each insulated wall, depending on the system.
What happens to my radiators and sockets?
They're taken off and refitted on the new wall face. Electrical work is done by a qualified electrician.
Do you cover Darlington?
Yes — we survey and quote internal wall insulation in Darlington (DL3) and nearby Newton Aycliffe, Stockton-on-Tees and Thornaby-on-Tees, with a fixed written price before any work starts.