Rigid Insulation Roof Assembly

The insulation used in low slope roof assemblies typically falls into one of the four categories.

Rigid insulation roof assembly.

All of the rigid insulation board products work. 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. 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. 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.

Or sprayed polyurethane foam spf. Dual purpose structural deck and insulating planks. With premium polyiso manufacturing atlas is able to produce the highest effective r values with minimal material thickness. 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.

Owens corning insulation products help improve thermal performance and control moisture in commercial institutional and. All products in the acfoam polyiso roof insulation family are closed cell rigid foam insulation board flat or tapered. Rigid board insulation rigid board insulation is the most common type of insulation used in low slope commercial roofing. It is made from.

This section outlines the conditions for unvented attic roof assemblies. If all of the insulation is on the top of the roof sheathing this is pretty much a no brainer.