In the cold Canadian climate, therefore, installation defects, particularly when combined with lower-density batts, can be a significant contributor to poor thermal performance in a wall. Architects need to be aware of the importance of good workmanship in batt installation and factors that may affect the recovery characteristics of the batt. This can affect recovery characteristics. This can also affect their recovery characteristics. If too moist, they can warp and cup, affecting the fit of the batts.
Gaps can significantly reduce thermal performance.
This is a requirement of the National Building Code. References Brown, W.C., Bomberg, M.T., Ullett, J.M. and J. Rasmussen. Measured thermal resistance of frame walls with defects in the installation of mineral fibre insulation. Journal of Thermal Insulation and Building Envelopes, Vol.16, April 1993, pp.318-339.