Internal wall insulation · Essex
Internal wall insulation in Colchester
Looking for internal wall insulation in Colchester? We survey homes across Colchester and the CO1 area, then give you a fixed written price before any work starts. Where a property in Colchester is in a conservation area or the front elevation must stay unchanged, internal insulation is often the practical route.
- Free survey in CO1 and nearby
- Guide price from £75 per m² 0% VAT
- Fixed written price before work starts
Free survey in Colchester
Postcode, service and a phone number is all we need.
What the job covers
- Insulated plasterboard, stud wall or breathable systems
- Loses roughly 50–100mm per insulated wall
- Sockets, radiators, skirting and coving are moved and refitted
- Needs careful detailing at floor joists, reveals and corners

Before we quote in Colchester
As well as Colchester itself, we quote in Sudbury, Clacton-on-Sea and Witham. It's roughly 26 miles from Colchester to Southend-on-Sea, the largest town in Essex. The East of England has a mix of post-war estates, inter-war semis and older solid brick and flint cottages, with some system-built council homes on post-war estates.
Much of Essex 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 terraced homes in Colchester with attractive brick fronts, one approach is to insulate the front internally and the rear externally.
- Postcode district
- CO1
- County or area
- Essex
- Nation
- England
- Nearby
- Sudbury, Clacton-on-Sea, Witham, Maldon
Approvals in England
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 Colchester
| 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.
What happens next
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 Colchester: questions
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.
How much room space will I lose?
Usually 50–100mm on each insulated wall, depending on the system.
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.
Do you cover Colchester?
Yes — we survey and quote internal wall insulation in Colchester (CO1) and nearby Sudbury, Clacton-on-Sea and Witham, with a fixed written price before any work starts.