Recent Q&A

• Blown-in cellulose (settling)

  I had 17" of cellulose blown in between open-web floor trusses that supports a family room above an unheated garage. Recently I was installing a floor plug outlet in the…

• Hardwood floor underlayment options

  I recently picked up some hardwood flooring(3/4" x 2 1/4") & noticed that a product called insulayment proports to insulate and act as a air barrier when used under the…

• Insulating options for open-web floor trusses

  Would greatly appreciate the collective advice from the readers of GBA on the following: I have 18" open-web floor trusses installed in a unconditioned garage with a conditioned room planned…

• Unvented cathedral ceiling?

  Having just read Martin's interview with Bill Hulstrunk (technical manager at National Fiber) I am completely and utterly confused when it comes to whether to vent or not in a…

• Venting a dense-packed cathedral ceiling

  I would like to dense-pack a cathedral ceiling with rock wool insulation. Rafters are 2x10. Do I need to install ProperVents along with soffit & ridge vents, or can I…