Rigid Foam Insulation Roof Application

Falls in the middle of the three types of rigid foam insulation in both cost and r value used most in walls or below grade applications recyclable and at about r 5 per inch costs around 42 per sq.

Rigid foam insulation roof application.

There are lots of different ways to insulate this type of roof but one of the best methods calls for the installation of rigid foam insulation above the roof sheathing. Nail it around the edges with roofing nails. Insulated roof assemblies can be vented or unvented. Scroll below if you d like to view an infographic comparing the three types if insulation.

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. As the most used insulation type for roofing applications polyiso is a closed cell foam that is created by heating chemicals and synthetic materials into a composite material that cools into rigid foam panels. This section outlines the conditions for unvented attic roof assemblies. This is the most easily recognized type of rigid foam insulation thanks to its popular blue green or pink color.

Start at the bottom of the roof and place the first piece of rigid foam insulation against the metal flashing starting at the center line. For a 1 in thick 4 8 panel comes unfaced or with a number of different plastic facings.