This post originally appeared on GreenBuildingAdvisor – Green Building Advisor is the one-stop source for builders, remodelers, architects & homeowners looking for expert advice on green products, strategies & proven construction details.
I was introduced to using closed cell spray foam (CCSF) below a slab a few years ago by New England contractor Wade Paquin of WKP Construction. He was insulating the below grade slabs of his new homes by spraying a couple inches over a bed of stone, then pouring the concrete. I have now had the opportunity to try this insulation method over a couple projects, Continue reading “Construction Design-Closed Cell Spray Foam Below a Slab”
I’m a big fan of exterior insulation. It’s rarely used in my area, mostly because the State of Minnesota has eliminated that code requirement. It has to to with our wide use of polyethylene sheeting as a vapor retarder on the warm in winter side of a wall assembly and then adding a low permeance plastic insulation product as exterior insulation. These plastic foams would be the choice for most contractors, lower cost and easy to source. Very slow vapor movement in either direction when a wall assembly becomes wet. This posting isn’t going to get into the foam insulations, but more into what exterior insulation can do for a home. Continue reading “Building Science-A Benefit of Exterior Insulation”
I learned about a company called BRINC Building Products, Inc a couple years ago. They had developed a solution for how to attach windows when using exterior insulation. Normally we would build a wood buck to move the rough framing out to the plane of the exterior insulation. Continue reading “Construction Materials-ThermalTight”
You would think that in my very cold climate of Northern Minnesota, we would be putting as much insulation in our walls and roofs as possible. Not the case. The majority of new homes I blower door test have the code minimum R-21 of wall cavity insulation Continue reading “Construction Design-Continuous Exterior Insulation”
The concreteless slab on grade home was in the planning stage for over a year. One of the first conversations I had with the owners was they wanted a home that was comfortable, healthy and had low operating costs. Extra insulation and good air sealing is how we planned on accomplishing these goals. Continue reading “Construction Design-Concreteless Slab on Grade-Walls”
The way we build a home is constantly changing. New codes come out every three years, new technology is evolving faster than I can keep up, and new materials help to make building a home easier. (Sometimes!) So, what are we striving for? Continue reading “Codes-Crystal Ball”