Recent Q&A

• 钢墙板:housewrap ?

  I started a project with the following wall assembly:Zone: 4Inside - OSB - Peel-stick membrane - 4" Foam insulation fully taped and seams staggered (two layers, R20 total) - 3/8"…

• Finding an engineer

  I would like to put 8" of rigid foam over a gambrel barn roof, with long fasteners. However, I cannot find a standard guide to the numbers and spacing of…

• Strapping screws: to angle or not to angle?

  For 4" of XPS, with a 3/8" airspace and 3/4" plywood strapping, is it sufficient to screw in straight, or do I need to screw in at an angle? I've…

• Roof assemblies – minimum insulation value

  In my state our code specifies a ceiling R-Value of 38 (climate zone 5A) - but in the 2012 IRC it requires R-Value of 49. For an unvented ceiling with…

• Constructing window bucks

  I'm getting ready to cut the pieces for some window bucks. I've read this article: //m.etiketa4.com/node/42336 but it doesn't specify how to attach the 3/4" plywood pieces to one another…

• Ice & Water Shield over OSB

  I'm going to be putting Ice+Water shield over a barn I'm insulating on the outside. The OSB is gapped (1/8"). Will the gaps pose a problem for the water shield?…

• Rainscreen – tie into soffit at top?

  If there is an air path to the soffit, when creating a rainscreen assembly, is it sufficient to vent the top through the soffit, or does the siding need to…

• Roof foam – 2 or 4 layers?

  I'm insulating the exterior of a gambrel barn. The roof needs 8" of XPS insulation, and I'm wondering if two layers of 4" foam will sufficiently block airflow to the…