Guidance

Room in roof insulation (RIRI): best practice

Guide for designers, surveyors, project managers and installers considering the suitability of roofs to receive internal thermal upgrades.

• From: Department for Energy Security and Net Zero and Department for Business, Energy & Industrial Strategy
• Published: 7 January 2022

Documents

Retrofit room in roof insulation: guide to best practice

PDF, 1.45 MB, 53 pages

Details

The Room in Roof Insulation (RIRI) guide provides best practice when considering the suitability of roofs to receive internal thermal upgrades. It covers:

• assessing the 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 room in roof 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 marked as such.

The guidance is relevant to all installations of this type, regardless of whether it is being delivered under a government scheme.

Published 7 January 2022