09/22/2019
Our current job is to do a face lift and exterior energy retrofit to an old sporting lodge in our area. (Click on the photo to see the entire album)
The first order of business was to handle the water that flowed through the foundation. It did no harm, as it was effectively handled by the original builder, but the current owner wanted it to be stopped altogether. This required weeks of ledge busting, an advanced drainage system, and sealing water entry points with Bentonite. W.D. Dorman did the excavation work.
We also had to jack up the attached pavilion, which was sitting on log posts that were sinking into the ground.
The plans also included building a new attached garage with workshop and 2nd story attic.
After the excavation and foundation was poured, we started on the roof. We removed the existing roof, down to the ceiling boards of the vaulted ceiling. We air sealed the ceiling plane from the outside with peel and stick ice and water shield. We then added 12" I-joists, which we cantilevered out over the original eaves for a 32" overhang. Deep overhangs protect the building in this far northern clime. We insulated the I-joists with 12" of rock wool, covered with a layer of OSB sheathing to encapsulate the insulation for superior performance. Then we furred over the rafters and OSB with 2x4s, sheathed that with 5/8" Zip Sheathing, creating a positive ventilation space. WE have employed this strategy before, and it creates a very quiet (you can't hear it raining) and effective insulation. We never see any snow melting with this system.
This roof system required that we add to the top of the main chimney to maintain a visual balance. Chimney Pro is doing the masonry work here.
Since the whole interior has been done over already, we have to do all the work from the outside. The owner wanted to keep all the windows in place. In order to do a complete job from the outside, it required that we air seal the building envelope from the outside. We used the peel and stick on the roof, and we did the same thing with Henry Blueskin VP-100 on the sidewalls. Since the walls are all sheathed with boards, it was a very "air leaky". But with a continuous layer of Blueskin, and complementary products to plug all the gaps around the log rafters, to flash and air seal the windows, we have a very comprehensive strategy. After air sealing, we added 2" of Rock wool board, strapped with 2x4s applied over the studs to provide an air space and a nailing bed for the 4x10 log siding to be applied. The idea behind this system is to allow any moisture that gets into the walls from moisture created by the inhabitants, to be able to dry to the outside of the house, rather than be trapped inside the walls. Henry Blueskin and Rock Wool are v***r permeable, allowing exterior drying to occur.
(Click on the photo to see the entire album)
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