Cavity Wall Insulation Gosport | Cavity Wall Insulation Installers | Slate Insulations Ltd

cavity wall insulation experts company header
cavity wall insulation experts company mobile header

Cavity Wall Insulation

We serve: Gosport, Fareham, Southampton, Eastleigh, Havant, Portsmouth, Hampshire and all counties across the South Coast.

Slate Insulation Ltd are experts in cavity wall insulation, damp injection, loft insulation and solar PV.

Our many accreditations include: BBA approved installer, PAS2030 green deal installer for cavity and loft insulation, NICEIC approved installer for solar PV, CHAS, ACCLAIM, CONSTRUCTION LINE registered. CIGA approved for SIG and Rockwool insulation BBA approved installer enabling us to undertake works though funding streams such as ECO and HCRO funding for free cavity and loft insulation.

We also carry out cavity wall removal using specialist tools and machinery. We cause little disturbance to the fabric of the building or to the occupants of properties.

Slate Insulation undertake the extraction of defective Rockwool, white wool, foam and bead insulation products from the cavity walls of domestic and commercial properties in the Gosport, Fareham and Portsmouth area as well prividing a service all over the UK.

Slate Insulations is a Gosport based company which was incorporated in 2013 to carry out cavity and loft insulation for FREE to our customers under funding.


  • 66% heat loss through uninsulated solid walls
  • 33% heat loss through uninsulated walls
  • 25% heat loss through the loft/roof space
  • 20% heat loss through windows & doors

“It was an extremely hot day and Carl and his mate did an excellent job insulating the loft which was very hot. As well as the extra work of laying new beams for no extra charge, for the chipboard flooring in part of the loft. They continued with the job on the day booked despite the uncomfortably hot conditions. They were prompt and arrived with all the necessary insulating material, and were courteous and tidy... they even put back the flooring on the beams which was not part of the job. I would thoroughly recommend Carl and his company Slate Insulations Limited.”

“Carl couldn't have been more helpful - We needed this cavity wall insulation quickly and he delivered quickly! He arrived on site early, got the job done and sent over all certificates within hours. No chasing, no messing around - Will definitely be using his services again should I need them on other developments. Thank you again Carl.”

cavity wall extraction process
cavity wall extraction process
slate cavity wall insulation accreditations

CALL FREE: 0800 1455988   or email us at Slate Insulations Cavity Wall Insulation and Solar Heating.


We provide cavity wall insulation, removal of faulty cavity wall insulation, loft insulation, solar PV panel services in Hampshire, Dorset, Wiltshire, Berkshire, Surrey, Kent, Sussex, London - and all over the UK.