Knauf’s mineral wool insulation being installed between timber studs. If needed, a service void can be battened out
Last month I focused on the energy performance of masonry building systems. This time, it’s the turn of timber frame – and there are some key design differences between the two. Unless you are thinking about solid wall construction, the fundamental distinction between masonry and timber frame is the non-negotiable need to preserve a cavity between the inner timber structural panel and outer cladding skins, which must be kept free for ventilation purposes. With brick-and-block, the gap can be usefully insulated to boost a masonry structure’s performance while attempting to prevent the total wall thickness from becoming too great. That’s not the case with timber frame, where the structural panel does everything: taking load by supporting floors and roofs, providing rigidity to stop the structure from a lateral twist and containing the insulation required for acoustic and thermal performance.
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Oct 2017
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