Rigid Insulation Plywood Roof Deck

After the roof deck is prepared the rigid foam boards need to be cut to size to fit snugly together on.

Rigid insulation plywood roof deck.

The illustration shows two layers of osb or plywood roof sheathing. 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. After installing several layers of rigid foam above the roof sheathing these workers installed plywood above the rigid foam. Installed on the roof exterior foam makes the living space below more comfortable and reduces the likelihood of ice dams.

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. 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. 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. Install rigid insulation board in multiple layers with joints offset vertically and horizontally between adjacent layers.

Acfoam nailable polyiso roof insulation. 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. They had to look original. Rigid foam insulation installation prepare roof deck.

Polyiso is an easy cost effective sustainable and energy efficient construction material. 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. Attach to deck board. Consult membrane manufacturer for suitability and system requirements.

Install nailbase for cladding. This type of insulated roof assembly limits thermal bridging through rafters. The bottom layer of a single ply membrane roofing system is the roof deck or substrate. Rigid insulation layers exterior to existing roof sheathing must provide sufficient thermal insulation r value to control condensation risk see climate specific guidance.