Residential Oversheathing Roof Insulaiton

This retrofit assembly is appropriate for homes with conditioned attics or where the retrofit is intended to create a conditioned attic.

Residential oversheathing roof insulaiton.

The base wall assembly generally remained unchanged with other materials used for air sealing and water management. Goboard structural sheathing is an ultra lightweight yet durable waterproof alterna tive to heavy sheathing products. The tight building envelope protects the wall system from water and air infiltration and contributes towards continuous insulation. However most cathedral ceilings and low slope flat roofs are insulated roof assemblies.

A roof over a vented unconditioned attic does not need to include any insulation. With more than 60 years of being used nation wide insulfoam roof insulations are a proven value. R panel is manufactured with a closed cell polyisocyanurate foam core bonded to fiberglass reinforced facers and designed for use over metal nailable and non nailable roof decks with a variety of membrane systems. Residential roof insulation insulfoam offers a wide variety of faced laminated and standard high performance eps insulation products for all your new and re roofing needs.

Cool roofs can be made of a highly reflective type of paint a sheet covering or highly reflective tiles or shingles. Made of a high density rigid polyisocyanurate core and coated glass fiber facer it combines the weather barrier and sheathing functions allowing completion of the building envelope to be faster and more cost effective. Remove existing roofing and non adhered underlayment to expose roof sheathing. Install insulating sheathing above the roof deck on existing homes.

The opportunity that presented itself was the integration of the exterior rigid insulation board into the. Standard or dark roofs can reach temperatures of 150 f or more in the summer sun. Also note that a new fully adhered membrane is installed on the original roof deck replacing the one installed 17 years ago is folded down to catch the top edge of the wall water control layer. Over roof insulation the gable overhang has been cut flush with the wall sheathing.

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. In fact all grades of thermo brace have been evaluated and permitted as a water resistive barrier wrb noted in irc section r703 2 and ibc section 1404 2. A cool roof under the same conditions could stay more than 50 f cooler and save energy and money by using less air conditioning. Don t let your heating costs go through the roof.

Nail it around the edges with roofing nails. Johns manville r panel rigid roof insulation board offers r values of up to r 23 6 providing high thermal efficiency.