Fasteners for mineral wool to foundation walls?
I am planning to insulate the exterior walls of a building with a walk-out basement. The building will have wood studs for the first floor and concrete walls for the basement.
Originally I was planning to use ICFs below grade and foam board above, but became concerned about possible damage by carpenter ants and the need to install gypsum board on the interior.
My current plan is to install 6″ of mineral wool on the exterior. I plan to use furring strips with long screws through the insulation to the studs on the first floor, but I am not sure how to fasten the insulation to the concrete foundation walls. I see metal screws as having two problems. First, they would penetrate the waterproofing membrane and second, they would provide thermal bridges to the concrete walls.
Any thoughts on this?
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