Cavity wall extractionReading (RG2)

Eight flats, Reading: fibre extraction and refill

A block of eight flats with failed fibre insulation in the cavity walls. The job covered 318m² of wall area, including a 13m² flat-roof extension with an empty cavity. We worked alongside the main contractor and met the council's surveyor on site.

  • 318m² of wall area treated
  • Eight flats in one programme
  • Borescope survey of every elevation
  • Worked to main contractor's programme
  • Council surveyor liaison
Eight flats, Reading: fibre extraction and refill

The problem

The fibre insulation in the cavity walls had failed. A borescope survey of every elevation showed the extent of the problem across all eight flats. The flat-roof extension had never been insulated at all.

What we did

We surveyed the block with a borescope camera and measured every elevation. We extracted the old fibre insulation, cleared the rubble from the cavity, and refilled. We also offered ventilation surveys for each property — a well-insulated home still needs to breathe. The main contractor arranged the scaffold; we worked to their programme and dealt directly with the council's surveyor.

Why it matters

Large multi-occupancy jobs need a contractor who can produce RAMS, work to a main contractor's programme and deal with a council surveyor. This job shows Extract doing all three.

Managing a block or a programme of homes?

We work with main contractors and housing associations across the south of England. We produce RAMS, work to programme and deal with client surveyors.

Extract Energy

Insulation, solar, battery storage and EV charging for homes across Hampshire, Wiltshire, the Isle of Wight, West Sussex and Surrey. Based in Gosport since 2013.

0800 7022181 sales@extractenergy.co.ukUnit 9 Clarence Wharf, Mumby Road, Gosport PO12 1AJMon–Fri 9am–5pm

Company

Accreditations

SchemeReference
TrustMark1948305
MCS (IAA)IAA10310
IAA installerFED10392
Kiwa579075
NAPITRegistered
ConstructionlineGold member
EA waste carrierCBDU532168

Extract Energy is a trading name of Extract Insulation Ltd, registered in England & Wales no. 09462745. Registered office: Unit 9 Clarence Wharf, Mumby Road, Gosport PO12 1AJ. VAT registration no. 213906329. Environment Agency registered waste carrier CBDU532168. TrustMark licence 1948305. MCS certificate IAA10310. NAPIT registered. © Extract Insulation Ltd 2026.

All installations are carried out by qualified, accredited engineers. Solar PV, battery storage and EV charger installations are subject to survey and technical assessment. Insulation measures are subject to property suitability checks. Prices and eligibility criteria are subject to change. VAT at 0% applies to the installation of qualifying energy-saving materials (insulation, solar panels and battery storage) until 31 March 2027, after which the rate reverts to 5%. Removal works, loft boarding and EV charger installation are subject to VAT at 20%. Nothing on this website constitutes financial advice. The Warm Homes Plan (grant and loan routes) is a government scheme; eligibility is determined by the relevant scheme administrator and is not guaranteed. Registering your interest does not constitute an application or a commitment by Extract Energy or the scheme administrator.

Extract Energy is not a financial services firm and does not provide regulated financial advice. Warm Homes Loan products are government-backed; independent financial advice is recommended before entering any credit agreement.