Rigid Insulation Roof Deck

Both install in the same manner but the foil faced product offers slightly more r value.

Rigid insulation roof deck.

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. During cooler night times and in winter periods the deck temperature can then be below the dew point of the interior air. Rigid foam is produced in various size panels 4 ft x 8 ft 4ft x 4ft etc. After the roof deck is prepared the rigid foam boards need to be cut to size to fit snugly together on your roof.

All the insulating firms around here insulate standard homes with wood roofs. Install nailbase for cladding. The 6 inches of rigid insulation added to the top of the existing roof deck needed to be done in a manner that was invisible. The first step with roof installation is to prepare the roof deck by getting rid of all dirt dust and contaminants.

Polystyrene foam and foil faced polyisocyanurate foam. Nailbase must be vented in high snow load areas. This can be done with air pressure vacuuming or even just sweeping. There are at least two good reasons why this approach makes more sense than installing the insulation under the roof sheathing.

The roof deck is cold wood decks without insulation above them will readily equilibrate to the exterior temperature. Rigid insulation for roof decks in our area of florida insulation is required in both the exterior walls and roof. The trim the frieze boards the fascia and the overhangs all had to look like they belonged. Additionally densdeck has been shown to withstand de lamination deterioration warping and jobsite damage more effectively than other roofing membrane substrates such as paper faced gypsum board fiber board and perlite insulation.

Rigid foam insulation is available in two main types. Rigid insulation layers exterior to existing roof sheathing must provide sufficient thermal insulation r value to control condensation risk see climate specific guidance. Owens corning foamular xps insulation is a closed cell moisture resistant rigid foam board ideal for many roofi ng applications including single ply protected roof membrane assemblies prma tapered vegetative roofs plaza decks architectural metal roofi ng and recover roofi ng.