Research and analysis

Thin internal wall insulation (TIWI)

Research into thin internal wall insulation used in retrofitting homes.

• From: Department for Energy Security and Net Zero and Department for Business, Energy & Industrial Strategy
• Published: 12 March 2021

Documents

Thin internal wall insulation: summary report

Ref: BEIS Research Paper Number: 2021/016

PDF, 1.62 MB, 48 pages

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Thin internal wall insulation, annex A: introduction to TIWI

Ref: BEIS Research Paper Number: 2021/016

PDF, 1.25 MB, 56 pages

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Thin internal wall insulation, annex B: TIWI field trials

Ref: BEIS Research Paper Number: 2021/016

PDF, 4.6 MB, 72 pages

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Thin internal wall insulation, annex C: predicting TIWI impact

Ref: BEIS Research Paper Number: 2021/016

PDF, 3.61 MB, 84 pages

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Thin internal wall insulation, annex D: moisture risks of TIWI

Ref: BEIS Research Paper Number: 2021/016

PDF, 952 KB, 21 pages

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Details

This project aimed to quantify the benefits and risks of thin internal wall insulation when used in retrofits of solid walled homes, compared to conventional thicker internal wall insulation.

Published 12 March 2021