Avoiding heat bridging while anchoring furring to interior basement wall through 2" XPS
I've seen references to this issue in the past, but can't locate in the archives exactly what's been suggested. Is there such thing as a plastic Tapcon with some structural ability? I've seen the plastic anchors made by Hilti and others, designed to hold insulation, but I'd like to hold more than insulation...
For various reasons, I have elected to insulate my concrete foundation wall on the inside. The idea is to go with 2" XPS, held in place with vertical furring strips 16" on center anchored through the foam to the concrete. The spaces between the furring will be filled with 3/4" pieces of XPS, and then drywall is hung in the usual way, screwed to the furring strips.
Conventional wisdom would have me anchor the firring strips to the concrete with 4" Tapcons. Many, many, very expensive and time-consuming 4" Tapcons. PLUS, screws are metal, and I fear they will conduct the cold from the foundation wall, and a little bit of condensation will eventually cause trouble at each and every Tapcon head, which is separated from the conditioned space by only 1/2" of drywall and some latex paint.
Any non-conducting alternatives?
Posted Mon, 08/26/2013 - 20:00
Edited Tue, 08/27/2013 - 03:53
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