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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,…
In timber frame construction, orientated strand board (OSB) is typically used to provide racking strength. The common practice is to fix it to the outside of the frame, mainly for ease and speed on site. But that convenience can come…
Given that wood fibre insulation is made from natural materials, it’s understandable that clients occasionally worry about it attracting pests—particularly insects, rodents, or even nesting wasps. But how justified are these concerns? In this article, we explore how wood fibre…
Wood fibre insulation has become a staple in sustainable construction – but not just because it’s a low-carbon material. At Back to Earth, we specify wood fibre time and again not for its popularity or its environmental story (though those…
Suspended timber floors are a common feature in older homes, and insulating them is often one of the most effective first steps in improving energy efficiency and occupant comfort. But while the basic process is straightforward, there are several critical…
Internal insulation is often a go-to strategy for upgrading thermal performance in older buildings—but how much is too much? The answer isn’t straightforward. It depends on wall type, location, materials, and crucially, how the insulation interacts with the building fabric.…
When upgrading the thermal performance of an existing building, U-Values are often the first metric people reach for—but what target should you be aiming for in a retrofit? The short answer is: it depends. Here’s how to navigate the regulations,…
Mind the Gap Insulation doesn’t just work because it’s there, it works because it’s continuous. Gaps, even tiny ones, can dramatically reduce thermal performance, increase moisture risk, and undermine your airtightness strategy. In both retrofit and new build contexts, overlooking…
It’s one of the first questions that comes up whenever we talk about wood fibre insulation: how does it perform in a fire? The short answer is – surprisingly well. While it’s true that wood burns, wood fibre behaves in…
Airtightness, Breathability, and Vapour Control: How to Make It All Work Together When it comes to building performance, few topics generate as much confusion—and controversy – as airtightness, breathability, and vapour control. Can you really make a building airtight an…