Exterior Roof Insulation Details

The binder includes product specifications detailed drawings and illustrations technical datasheets and a number of informational brochures.

Exterior roof insulation details.

Termites can tunnel from the soil up behind the foam panels and attack the structure of a house without being noticed. Rigid insulation layers exterior to existing roof sheathing must provide sufficient thermal insulation r value to control condensation risk see climate specific guidance. Install roofing underlayment flashing and cladding as per best practices. Current building code does provide prescriptive means to attach cladding over exterior insulation table r704 3 note v.

When insulating foam is used to wrap the exterior of a home it provides an undetected pathway connecting soil to structure. 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. Minimum nail length must accommodate sheathing and penetrate framing a minimum 1 inches. If you are planning to install metal roofing then you would install asphalt felt above the rigid foam followed by 1x4 or 2x4 purlins 24 inches on center then the metal roofing.

Single ply roof insulation. Now comes the really really big point. Install nailbase for cladding. Current pneumatic nailers have maximum fastener lengths of 3 to 3 5 which limits insulation thicknesses to 1 5 max.

Single ply roof systems can provide an easy to install seamless roof assembly. Insulated roof assemblies can be vented or unvented. Detail drawings illustrations lapolla distributes an architectural binder available in print and electronic format. Nailbase must be vented in high snow load areas.

Rockwool multifix is a mineral fiberglass faced stone wool product that can be installed under many single ply membranes. Building codes are clear. The easiest way to insulate your roof is with one or two layers of rigid foam insulation installed above the roofing. There are at least two good reasons why this approach makes more sense than installing the insulation under the roof sheathing.

Extend the foam 4 inches past the walls so that you can add foam to the walls later and tie it in to the roof. New roof sheathing on top can extend out to create a new roof overhang. Thermalwall ph rigid eps insulation board for insulating the exterior walls of homes the advantages are plenty here panels are between 4 5 inches and 8 inches thick the exterior insulation is continuous and they can be attached with 6 inch 10 screws from 4 to 6 inches long. Gable end detail overhang cut and then rebuilt to hide the thickness of the over roofing rigid insulation.