Question

What are some alternative ways of in­sulating the walls of a wood light frame building to R-values beyond the range normally possible with ordinary 2 x 4 (38 x 89 mm) studs?

Answer 1

To enhance insulation beyond 2 x 4 studs, one can use denser insulation, increase wall thickness, add continuous insulation outside the studs, or employ structural insulated panels for superior R-values.

Step-by-step explanation:

Insulating the walls of a wood-light frame building beyond what is possible with standard 2 × 4 studs can be achieved through several methods. First, one could use higher R-value insulation materials, such as spray foam, which has a higher R-value per inch than traditional fiberglass batts. This would improve the insulation's effectiveness without increasing wall thickness.

Another approach is to increase wall thickness by using 2 × 6 studs instead of 2 × 4s, allowing for more space for insulation, hence a higher R-value within the wall cavity. Additionally, the installation of continuous rigid foam insulation on the exterior or interior side of the walls can significantly increase the overall R-value without being limited by the stud depth. Finally, one can also opt for structural insulated panels (SIPs) which are pre-fabricated wall panel systems that offer superior insulation as compared to traditional framing.