Insulation & Air Sealing
Framing a roof with I-joists over the existing roof makes a ton of room for insulation and offers a short lesson in vapor movement through assemblies
Condensation is when moisture in the air hits a cool enough surface to convert the vapor into water.
Why insulating on top of a house is better than insulating inside
Hands-on training with local pros at the largest construction event in the Northeast
A tight air barrier is the best way to build an energy-efficient house. Outside the sheathing are many chances to make it better.
A thermal break and solid backing puts the window on the outer face of a thick wall. Now, there's room on the inside window sill for cats and bowling trophies
When air sealing a house, begin with the biggest holes and work toward the small ones
"In order to maximize the buildable area on the infill lot, we had to go fairly deep and do some extensive shoring."
—Dan Whitmore of Hammer & Hand
Offset the joints and seal the gaps to keep air leaks out of the thick walls
This is the first episode of 7 Minutes of BS (building science). We break it down with engineers and building scientists.
What the HERS index is and how to make it work for you
Windows cannot rest on the foam, so they hang from wood bucks
Direct the heat toward the feet
Letting the brick dry evenly is the key for old masonry walls that want to leak less energy
Dr. Bailes does the math