22 July 2021
Progress on one of our low energy retrofit projects in Oxford is coming along nicely! A number of factors meant that we specified internal wall insulation (IWI), in this case a wood fibre board, which has the rigidity to stay upright against the walls. Not only does wood fibre have a low embodied energy, it is vapour permeable, which is important for reducing the risk of condensation in solid brick walls. A lime-based parge coat seals and evens up the wobbly brickwork behind the boards.
As architects, we spend a lot of time on the computer / drawing board, so it’s particularly important for us to see the construction of our projects on site, and to get feedback from those building it. The use of lime-based products on these buildings is important, again, for vapour permeability. However, this does result in much longer drying times compared to cement-based alternatives. This needs to be factored in early on, as it will have an effect on a project’s programme.
We’re taking a bit of a summer break from our journal, so there’ll be no posts for the next few weeks. We’re still here though, so do get in touch to discuss your low impact architectural project.