exterior foam on block walls – GreenBuildingAdvisor

hello,  i have an uninsulated block wall building with no insulation. plan is 2×4 stud walls inside with rockwool r15,  strapped foam exterior with wood siding, i have done this in the past on wood framed buildings and always matched exterior to interior r values as i am in the cold  upper north east. do i have  to do this with block wall too or can i use less on exterior, was planning on only r-6 exterior? thanks

Join the leading community of building science experts

Become a GBA Prime member and get instant access to the latest developments in green building, research, and reports from the field.

Start free trial

Related Questions

• Best exterior insulation options for solid block walls

• how to block & flash exterior fixtures on exterior-foam assembly

• Insulating block walls

• Foam sheathing insulation on basement block walls