Guidance
Solid floor insulation (SFI): best practice
Guide for designers, surveyors and installers considering the suitability of solid floors to receive internal thermal upgrades.
Documents
Details
This guidance provides best practice for installing solid floor insulation (SFI) and covers:
- assessing the technical viability of insulations and systems in potential scenarios
- selecting materials based on hygrothermal understanding and installation best practice
- safe methods of achieving the best possible solutions
It is recommended for anyone undertaking solid floor insulation, including:
- designers
- surveyors
- installers
Some sections are written specifically for the retrofit assessor or surveyor, the retrofit designer or the retrofit installer, and are labelled as such.
The guidance is relevant to all installations of this type, regardless of whether it is being delivered under a government scheme.
Published 13 June 2022