This is the second year that I’ve been privileged enough to attend the invite-only Building Science summer camp hosted by Building Science Corporation in Westford MA. I’ve been a student of Building Science now for about 13 years and Joe Lstiburek’s (founder of BSC) teaching has been a huge influence in my understanding of how buildings perform. This 3 day event is held in a giant ball room of a hotel, and I would guess that 500 of the brightest minds in the science of construction attend. Builders, Researchers, Professors, Building Products Manufacturers, and all different sorts of Construction related people all in the same room hearing the same presentations. I took a ton of notes this year, and there were several fantastic presentations. However, I’m only going to give you a taste of my favorite presentation. If you’d like to download the presentations from the Westford Symposium on Building Science they are all available here.
George Fritz & Foster Lyons – Horizon Builders in MD
“The Quirkiness of Details”
He is building mostly masonry clad houses with wood framing and this is one detail of his favorite wall section.
-2×6 Exterior Walls with roughly 3″ of closed cell foam (2 lb density)
-Sheathing is 3/4″ Plywood (specific engineered nailing pattern to hold for the masonry anchors)
-WRB is Fluid Applied Tremco ExoAir 230 which also is a fantastic air barrier
-Exterior rigid foam – 2 layers which have a diamond pattern carved by his CNC machine for a drainage plane against the WRB and against the cladding
-Heckmann Pos-I-Tie Masonry anchors that screw through the foam into the 3/4″ sheathing (not necessary to hit studs)
-Stone Veneer is last with “U” shaped Heckmann anchors in the mortar bed Amazing system, absolutely amazing.
They came up with this system after a failure of the “standard” way of constructing a wall in their market. His presentation was a great example of a smart builder using his Building Science knowledge to figure out a better system for a wall in their area. I think it’s interesting that this is very similar to the “Perfect Wall” that I utilized except the added Spray Foam inside rather than using a thicker exterior rigid foam. My guess is that was related to the Architecture of the house George’s company typically builds.
Matt Risinger – Risinger Homes in Austin, TX
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