Not all timber frames are created equal, and many new homes contain far more timber than designers might assume and more than what is required. This became evident following a 2020 report commissioned by BRANZ showing that the wall area of new dwellings consisted of 34% timber, around double what was often assumed in R-value calculations (see BRANZ ER53). Since then, BRANZ has updated their House Insulation Guide to help designers account for varying levels of timer fraction when calculating effective R-value for H1 Energy Efficiency compliance. But this still leaves the question of how to calculate the timber fraction. For this webinar, we’ll be joined by Pete Hammond, National Technical Resource Manager for Placemakers who has been working on a solution.
