Our services

SWI offers expert and professional insulation for domestic properties and commercial buildings, across residential, commercial, agricultural and industrial sectors.

Whether you want to explore your insulation options, modernise or sustainably improve your property, here are just some of the areas we cover:


We are PAS2030-19 and TrustMark licenced/certified and specialise in the installation of Spray Foam, External Wall and Internal Wall Insulation.

We operate throughout London and the South East of England, installing in both domestic and commercial buildings.