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”
Construction Design-Concreteless Slab on Grade-Walls
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”
Construction Design-Fixing Ice Dams from the Interior, Part 2
This past winter has been one of the snowiest and coldest I can remember in my 50 years living in Minnesota. I wasn’t completely sure what to expect from the home I purchased late last fall. I know it has issues, especially with the roof air sealing and insulation. Continue reading “Construction Design-Fixing Ice Dams from the Interior, Part 2”
My Cape-Office Build-Out
We moved into my 1952 Cape last December. Winter was upon us, no time or desire to start any of the major renovation and energy updates I have planned. My office was moved temporarily into the extra basement bedroom with a plan to build-out a new office adjacent to the bedroom. Continue reading “My Cape-Office Build-Out”
Construction Design-Below Grade Insulation-Existing Homes
Last week we talked about Minnesota code requirements for insulating foundations in new construction. This week we’ll hit existing homes.
Continue reading “Construction Design-Below Grade Insulation-Existing Homes”
Construction Materials-Spray Foam
Expanding spray foam is a two-part chemical process involving isocyanate and poly resin, which when combined in the right mixture will expand 30 to 60 times it’s liquid volume. Continue reading “Construction Materials-Spray Foam”
Building Science-Building Shell Layers-Thermal Control Layer
Last week we talked about interior moisture drive through the building shell, the vapor control layer. This week we will continue with the building shell layers discussion, number 4 on our list is the thermal barrier. Continue reading “Building Science-Building Shell Layers-Thermal Control Layer”
Construction Materials-Rigid Sheet Insulation
Today, we are going to have our first dedicated discussion about a specific building material, sheet insulation. I originally had this blog named Foam Insulation but changed the name because not all sheet insulations are a type of foam, there are a few non-foam products, one that I will discuss last. Continue reading “Construction Materials-Rigid Sheet Insulation”
Building Science-R-value
In our northern climate, how quickly a structure loses heat is dependent on three factors, the first is transmission heat loss which includes the difference between inside and outside temperatures, called the delta T, and the resistance to heat flow, or R-value of the building assemblies. Continue reading “Building Science-R-value”