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How to fix sills and wood fibre window reveal insulation

Find out more about how we approach this building scenario.

In this video we run through the very important detailing around windows and window sills. The sills must project over the final surface by at least 40mm and this often means you need to put on deeper sills. This can be done by using the UdiALU sills or by extending existing sills. 

As this is such an important area, if you have any questions please contact us.

CPD Training

We offer CPD training for architects practices across Devon and Cornwall.

Software Modelling

We offer dynamic heat and moisture modelling as well as condensation risk analyses.

Building Plan Review

If you have some plans and would like our opinion on which materials would be the best for you, contact us.


Back to Earth is a natural building material supplier. We're not your typical builders'​ merchant though and instead work closely with our clients during the planning, designing and building phases of projects.

Back to Earth is a proud signatory of the Anti-Greenwash Charter:

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