Internal wall insulation · Greater London
Internal wall insulation in Welling
Quotes for internal wall insulation in Welling list the system, the detailing and the VAT position in writing, so you know exactly what's included. Where a property in Welling is in a conservation area or the front elevation must stay unchanged, internal insulation is often the practical route.
- Free survey in DA16 and nearby
- Guide price from £75 per m² 0% VAT
- Fixed written price before work starts
Free survey in Welling
Postcode, service and a phone number is all we need.
Part of every quote
- Needs careful detailing at floor joists, reveals and corners
- Keeps the outside of the house exactly as it is
- Insulated plasterboard, stud wall or breathable systems
- Loses roughly 50–100mm per insulated wall
Before we quote in Welling
As well as Welling itself, we quote in Bexley, Eltham and Thamesmead. London's housing includes a large stock of Victorian and Edwardian solid-wall terraces, inter-war semis and post-war blocks, and conservation areas cover many streets — so planning is often the first question for external work.
Much of Greater London 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.
We plan internal insulation in Welling homes room by room so you keep the rest of the house usable.
- Postcode district
- DA16
- County or area
- Greater London
- Nation
- England
- Nearby
- Bexley, Eltham, Thamesmead, Chislehurst
Planning and building control in England
Internal insulation rarely needs planning permission, but in England and Wales insulating or replastering more than half of a wall's area involves building control, and listed buildings need consent for internal changes that affect their character.
Do I need Building Regulations approval?
Yes, in England and Wales once you insulate or replaster more than half of a wall's area (or more than a quarter of the building's whole envelope), it's treated as renovating a thermal element. The wall should reach about 0.30 W/m²K where practical, and building control needs to be involved.
Internal wall insulation prices in Welling
| 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
Tell us about the property
Use the quote tool or form, or call. Photos help.
Free survey
We measure, check the walls and confirm approvals.
Fixed written quote
System, details, access, exclusions and VAT in writing.
Installation
Scheduled for suitable weather, with a clear programme.
Internal wall insulation in Welling: questions
How much room space will I lose?
Usually 50–100mm on each insulated wall, depending on the system.
Can I stay in the house?
Yes, but each room is out of use while it's worked on, typically 3–5 days.
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 Welling?
Yes — we survey and quote internal wall insulation in Welling (DA16) and nearby Bexley, Eltham and Thamesmead, with a fixed written price before any work starts.