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Daventry · Northamptonshire

Cavity wall insulation for flats in Daventry

Flats share their outer walls, so cavity wall insulation is normally done for the whole block at once with the freeholder's agreement. We cover Daventry and the wider NN11 postcode district, with the survey, result and fixed price all in writing.

Free survey in Daventry

Covering Daventry and the NN11 district. Tell us about the property and we will arrange a free survey and a fixed price.

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Cavity wall insulation for flats for Daventry properties

Daventry is among the towns we cover in Northamptonshire, alongside Northampton, Market Harborough and Wellingborough. It is about 12 miles west of Northampton.

Blocks of flats in Daventry are surveyed as a whole, because the cavity runs across every flat in the building. For landlords and managing agents in Daventry, we survey in batches and return a result sheet and fixed price per address.

Local weather affects which walls can be filled. Much of Northamptonshire sits in the more sheltered driving-rain zones of the UK, which widens the choice of fill. Exposed elevations, coastal sites and high ground still get checked wall by wall.

In terms of approvals, in Daventry filling a cavity is notifiable building work and needs a building notice or competent-person self-certification.

Funding in England

In England, ECO4 runs to 31 December 2026 and Warm Homes: Local Grant supports low-income households through councils.

Sources: GOV.UK: extending the ECO4 end date, government response; GOV.UK: Warm Homes Plan.

Fire and height

For blocks, the material must suit the building's height and use. Non-combustible mineral wool is the usual choice; we confirm the system and its certificate limits in writing.

What is included in Daventry

  • Freeholder and agent coordination
  • Per-flat pricing
  • Leaseholder information sheet
  • Block survey

Guide prices for Daventry

Cavity wall insulation for flats guide prices
Cavity wall insulation for flats guide pricesGuide price
Per flat, whole-block fill (low-rise)£495–£995

No VAT is charged on installing insulation in homes until 31 March 2027 (then 5%). Guide ranges only: the fixed price is confirmed in writing before any work starts, and anything that could not be seen at survey is agreed with you first.

What happens next for a Daventry property:

  1. Send your details

    A minute online, or call the free number.

  2. We check the walls

    Construction, cavity width, debris, damp and wind-driven rain exposure.

  3. You decide

    Plain-English result and a fixed price, with no pressure to book.

  4. Job done properly

    Holes made good, paperwork handed over, guarantee details confirmed.

Last reviewed 19 October 2026.

Cavity wall insulation for flats in Daventry: questions

How soon can you visit in Daventry?

We arrange dates when you get in touch. Availability varies through the year, so we give you real dates rather than a promise on the website.

How much does cavity wall insulation for flats cost in Daventry?

Our guide ranges for cavity wall insulation for flats are shown on this page. The fixed price for your Daventry property is confirmed in writing after the survey, before any work starts.

Is the survey free in Daventry?

Yes when it is for an install quote. Standalone reports for Daventry buyers, sellers or landlords who do not need an install quote are priced before you book.

Do you work on rented homes in Daventry?

Yes. Landlords and agents in Daventry can book batch visits, and work is arranged around tenants.

Nearby towns

Book a free survey in Daventry

Free survey with an install quote. Written result. Fixed price before any work.