Rigid Insulation Plywood Roof Deck

After installing several layers of rigid foam above the roof sheathing these workers installed plywood above the rigid foam.

Rigid insulation plywood roof deck.

Install nailbase for cladding. There s a reason polyiso rigid foam insulation is used in more than 70 of commercial roof construction as well as in many residential builds. A lower layer conventionally nailed to the rafters and an upper layer installed as a nailing surface for the roofing material on top of the rigid foam. Consult membrane manufacturer for suitability and system requirements.

The illustration shows two layers of osb or plywood roof sheathing. Attach to deck board. The bottom layer of a single ply membrane roofing system is the roof deck or substrate. Certainteed flintboard iso nb composite polyisocyanurate osb roof insulation is a rigid board insulation for use with heavyweight shingles standing seam metal tile slate and single ply roofing systems.

Rigid insulation layers exterior to existing roof sheathing must provide sufficient thermal insulation r value to control condensation risk see climate specific guidance. They had to look original. 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. Acfoam nailable polyiso roof insulation.

Rigid foam insulation installation prepare roof deck. From the nail base itself to specially engineered fasteners acfoam nailable products are designed to work together for an efficient and fully functional nailable roof system. Atlas acfoam nailable products offer osb or cdx plywood adhered to the top face combining all the benefits of a nailable roof substrate with thermally efficient polyiso insulation. This type of insulated roof assembly limits thermal bridging through rafters.

After the roof deck is prepared the rigid foam boards need to be cut to size to fit snugly together on. All atlas acfoam polyiso insulation boards are qualitymark certified providing consumers an easy way to identify premium products that meet or exceed building codes for the best in roof performance. The trim the frieze boards the fascia and the overhangs all had to look like they belonged. The plywood was fastened through the rigid foam to the rafters with long screws.