Recent Q&A

• Insulate rafters in small attic

  Hi all, I have a small attic space that I want to use as storage. As a result I need to insulate the true 2x4 rafter bays - total surface…

• Economical way to insulate small attic

  I have a small 8x12 entryway attached to the front of my house. The attic space above it is accessible from the second floor. I want to use it as…

• Two choices for minisplit sizing

  Trying to size a Mitsubishi Hyper Heat Mini Split: Climate Zone 5A, Zip 01301, Heating Design Temp -2F (approx), second story space, 2 bedrooms and a hallway, 450 sqft floor…

• Include provision for future ventilation?

  The second story of my old farmhouse is gutted. I am in the middle of running electrical, etc and getting ready to close up the walls. It doesn't need it…

• Air seal complex joint

  I have a polyiso/wood and polyiso/polyiso joint that I want to air seal. So far I have been using spray foam to accomplish the task. Even with the low expanding,…

• Liquid-applied flashing across dissimilar materials?

  Can a liquid-applied flashing product like Zip System Liquid Flash or Prosoco Fast Flash span a gap between different building materials? The particular situation I can think of would be…

• What to do about an old attic?

  I live in an old MA farmhouse built in 1890. I have a second story over about half of the house and a 3.5/12 shed roof that descends to the…

• 水和空气控制策略s for retrofit applications

  I have an old house with no insulation aside from 1/2" of polyiso installed to the outside of old wood sheathing and siding and covered in vinyl. Based on previous…

• Basement window and door detail

  This is probably a pretty easy question but I'm having a hard time finding the information. I am looking for a detail of a basement window installed in a brick…

• Best Approach: 19th Century Farmhouse Retrofit

  I recently purchased a farmhouse in Western MA (zone 5) that was built in 1890. The house is currently heated by a vintage 1987 Williamson forced air furnace with newer…