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Guides and articles covering internal wall insulation systems, including installation, moisture management and detailing for IWI projects.
Clay plaster is the preferred substrate for BTE’s internal wall insulation systems, and the reasons stack up across performance, embodied carbon, and practicality. The fundamental goal when fixing insulation boards to an existing wall is achieving full, continuous contact with…
The idea of introducing a ventilated cavity between internal wall insulation and the masonry surface is one that comes up regularly — and while it is recognised as an approach in some guidance, the strong preference here is to direct-bond…
When retrofitting older buildings, one of the big challenges is reducing heat loss through solid masonry walls without creating moisture problems. Adding internal wall insulation (IWI) helps with energy efficiency — but it can also trap moisture inside the masonry,…
For solid-walled properties, the choice between external and internal wall insulation is one of the most common questions in retrofit — and the honest answer is that both have genuine merits and neither is universally better. External wall insulation keeps…
Plasterboard has something of an image problem in natural building circles, and it’s largely undeserved. Gypsum — the core material in plasterboard — is a naturally occurring mineral that requires very little processing: it’s extracted from the ground, dried at…
In conjunction with Red Co-Op in Manchester, we’ve created a system to make insulating your walls easier. Here, using some simple 3d models, we look at how to install NatureWall wood fibre internal wall insulation with a plasterboard finish. For…
Here, using some simple 3d models, we look at how to correctly detail our UdiTHERM wood fibre internal wall insulation with a lime plaster finish, focussing on window openings (which also applies to door openings) so that you can be…
In this guide we look at how to insulate basement walls and walls below ground level using Multipor insulation boards. Below ground we would not usually recommend using natural fibre insulation as, no matter how well the wall is tanked,…
In this guide we look at how to internally insulate a fireplace using Multipor insulation, when installing internal wall insulation. The method below is suitable for fireplaces with a wood burner installed or for open fireplaces (which obviously we would…
Find out more about our approach to this building scenario. I have something innovative I wanted to share with you… Unger-Diffutherm have launched a new product, UdiIN2cm. It has been designed to address the problem of how to internally insulate…