I asked about 2x6 studs and he explained that the value of the foam maxes out at about 3 so the larger stud wasn't needed as it doesn't provide any additional structural integrity, only aesthetic appeal with a.
What Size Insulation For 2X8 Walls. Insulation depends on loft, however, so stuffing too large a batt in a joist space will reduce its effectiveness. The wall will still be off set or have a step at the bottom so putting down a much more expensive bottom plate is not gaining in my opinion.
What r value insulation do i need for basement ceiling ... from mishkanet.com
The wall will still be off set or have a step at the bottom so putting down a much more expensive bottom plate is not gaining in my opinion. Even though they are called 2 x 4s, they are actually 1 ½ x 3 ½, so you'll need 3 ½ of foam. Spray on foam insulation is thinner, but is more continuous.
From our experience of installing solid wall insulation across london, it seems there is no standard approach to how the councils judge what is acceptable and what isn't, so if in doubt, it is probably worth asking the question!
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