Recent Q&A

• FS: Rockwool Comfortboard 80 4×8′ 1.5″ Sheets

  I am selling some leftover Rockwool Comfortboard 80 continuous insulation panels, located in Bellingham, Wa. They are 4x8' x 1.5" R6 panels. They are in perfect condition. They are still…

• Exterior Insulation for Stacked Hip Roof

  Hi, I am working my way through a deep energy retrofit on my 1908 home located in Bellingham, Wa (4c). My end goal is to be near passive level performance.…

• Heat / mechanical design for PNW near-passive home

  Hi all - My husband and I are renovating a 1908 foursquare home in northern Washington State. We are using passive principles though not going for certification. We're replacing everything in…