Choice Solutions Fibreglass Batts

Fibreglass insulation batts are the most used thermal insulation material in house building/home construction in Australia.

Fibreglass insulation batts are precut, whereas blankets are available in continuous rolls. Compressing the material reduces its effectiveness. Cutting it to accommodate electrical boxes and other obstructions allows air a free path to cross through the wall cavity.

One can install batts in two layers across an unfinished attic floor, perpendicular to each other for increased effectiveness at preventing heat bridging.

Batts can be challenging and unpleasant to hang under floors between joists; straps, or staple cloth or wire mesh across joists can hold it up.

Gaps between batts (bypasses) can become sites of air infiltration or condensation (both of which reduce the effectiveness of the insulation) and require strict attention during the installation.

By the same token careful weatherisation and installation of vapour barriers is required to ensure that the batts perform optimally.