Insulation Over Roof Sheathing

Over roof insulation the gable overhang has been cut flush with the wall sheathing.

Insulation over roof sheathing.

Featuring integrated moisture air and thermal protection zip system r sheathing completely reimagines traditional wall assemblies by streamlining exterior water air and thermal management. Staple plastic or foam baffles to the roof sheathing near the eaves to keep the material away. Install rigid insulation board in multiple layers with joints offset vertically and. There are three main types of insulating sheathing currently being used in the industry.

Foamular family of products brochure pdf v 1588677951000 7 13 mb. Xps insulation foamular insulating sheathing is xps insulation is used as sheathing over all exterior walls in wood or metal framing construction to create an effective insulating envelope over the entire structure. Insulation is applied in direct contact with the underside of the structural roof sheathing. Request a product sample where to buy contact a rep.

If the sheathing is boards it s a good place for a self adhered membrane. The plywood was fastened through the rigid. For the same reason insulation shouldn t touch the roof s underside. Roof sheathing attaches to the surface of the rafters or trusses to form the structural skin of the roof.

Apply continuous air control membrane to existing roof sheathing or implement continuous air control at roof sheathing. Zip system r sheathing is the simple all in one structural panel with built in exterior insulation. Scope remove existing roofing and non adhered underlayment to expose roof sheathing. If plywood or osb sealing the panel edges with acrylic tape over primer or a fluid applied membrane would be good options.

This type of insulated roof assembly limits thermal bridging through rafters after installing several layers of rigid foam above the roof sheathing. It spans the rafters to support the roofing and in the case of panel sheathing such as plywood or osb it acts as a diaphragm with the walls to resist horizontal loads. Expanded polystyrene eps extruded polystyrene xps and polyisocyanurate polyiso. A roof over a vented unconditioned attic does not need to include any insulation.