Once you know your target R-value - half that of the above-grade walls, or roughly one-quarter the R-value of the roof - here's how to choose and install the proper insulating material.
Where should windows be placed in thick, well-insulated wall systems - toward the inside, or toward the outside?
A behind-the-scenes look at the materials and methods used in making high-performance tilt-and-turn windows.
If you want to cut out a doorway through a foundation, Steve Baczek has a strategy for protecting the footing and foundation from frost.
Here's how to retrofit insulation to the outside of a concrete slab, which is an effective way to improve the warmth of the floor inside.
