Rigid Insulation Roof Assembly

If all of the insulation is on the top of the roof sheathing this is pretty much a no brainer.

Rigid insulation roof assembly.

Foamular xps roof insulation for commercial buildings page 5 foamular xps roof insulation for commercial buildings foamular xps insulation is a rigid foam insulation which meets the needs of today s design professionals for a truly sustainable insulation product. Note that table r806 4 indicates the amount of insulation above the roof deck or air impermeable insulation below the roof deck required for condensation control assuming minimum required total insulation as indicated in section n1102 building thermal envelope. Or sprayed polyurethane foam spf. All of the rigid insulation board products work.

The insulation used in low slope roof assemblies typically falls into one of the four categories. All products in the acfoam polyiso roof insulation family are closed cell rigid foam insulation board flat or tapered. Owens corning insulation products help improve thermal performance and control moisture in commercial institutional and. Unvented roof assemblies should be insulated either with air impermeable insulation rigid foam or spray polyurethane foam or with a combination of foam and air permeable insulation.

Lightweight insulating concrete lwic. This section outlines the conditions for unvented attic roof assemblies. When it comes to insulation performance the difference is in the details. All insulation above roof deck the big deal with unvented roof assemblies is to control condensation or moisture accumulation on the underside of the roof sheathing.

Dual purpose structural deck and insulating planks. If you don t want to use sips or nailbase read this article tolearn the four basic approaches to insulating unvented roof assemblies.