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This paper evaluates the performance of typical residential wall systems that incorporate water-resistive barriers with a range of vapor permeability. These systems included both absorbent and… Read More

Improved energy efficiency building enclosures generally means an increase in R-value and reduced air leakage, which commonly reduces the drying potential of wall assemblies.… Read More

This paper describes a fully instrumented large-scale mock-up completed in a southern Ontario private school to allow direct comparisons between insulated and non-insulated walls with a focus on the… Read More

Adhered veneers, in which masonry units are directly attached to a substrate via mortar and ties without a drainage or ventilation gap, have become a very popular finish in residential and light… Read More

Unvented cathedralized attic (UCA) assemblies, created by eliminating ventilation and by moving the thermal insulation and air barrier from the ceiling plane to the rafters,… Read More

This paper examines methods of using hygrothermal models, primarily WUFI, to assess the impact of energy efficient enclosure upgrades on the durability of historical buildings. Means of producing and… Read More

OK, we all know this…but for the record…a heat pump water heater (HPWH) uses electricity to transfer heat from the surrounding air to heat the water rather than using electricity to heat the water… Read More

One of the most iconic images that shaped my career in the early days was from Madelene Rousseau’s presentation at “”Building Science Insight: ’83”…Humidity, Condensation and Ventilation in Houses…… Read More

Garages were once easy to deal with.  Their function was to store a vehicle.  Not anymore.  Garage space is becoming too valuable for just vehicle storage.  They are becoming part… Read More

Below grade water management is necessary for all below grade spaces.  Yes, we were here before (BSI-125: Concrete Basement Foundations – July, 2021), but we covered only two approaches – the… Read More