Roofing Rigid Foam

The purpose of the requirement that rigid foam installed above roof sheathing meet certain minimum r values is to ensure that the roof sheathing stays warm enough during the winter to avoid moisture accumulation and possible sheathing rot.

Roofing rigid foam.

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. Polyurethane spray foam roofing systems are frequently used to insulate and protect a wide variety of residential commercial and industrial buildings. The dura foam roof system has a rigid and durable surface that you can walk on. Polyiso is an easy cost effective sustainable and energy efficient construction material.

Monthly energy and utility savings of 30 or greater can be achieved when compared to the alternative roofing and insulation systems. Install nailbase for cladding. Spray foam is the high tech alternative to traditional roofing and insulation materials. The boards are available in several thicknesses and r values.

Eps is the most vapor permeable of the three types. Rigid foam insulation also known as insulating boards provide high r values. Foam roofs are lightweight durable and seamless. Sprayed polyurethane foam spf is a fully adhered closed cell roofing material applied to a desired thickness usually 1 2 inches forming a seamless monolithic roof surface incorporating flashings penetrations and parapet walls.

You can even place it under the foundation slab. All three types of rigid foam insulation expanded polystyrene eps extruded polystyrene xps and polyisocyanurate are suitable for use on the exterior of walls and roofs though they do not perform equally. Install roofing underlayment flashing and cladding as per best practices. At r 4 it also has the lowest r value per inch.

Rigid insulation layers exterior to existing roof sheathing must provide sufficient thermal insulation r value to control condensation risk see climate specific guidance. Rigid insulation is one of the best tools to reduce your energy costs. Spray polyurethane foam spf is the only roofing material that has no seams. Install it anywhere from the roof to the foundation.

Rigid insulation sheathing is made of a rigid plastic foam that is typically sold in 4 8 or 4 10 foot boards. All seasons insulation spray foam roofing and insulation contractor serving southern california. Here at all seasons insulation we specialize in superior quality polyurethane spray in place foam spray foam insulation and roofing. Continuous rigid insulation is a construction solution that provides a thermally efficient building enclosure.

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. 1 inch and 2 inch thicknesses are common. Nailbase must be vented in high snow load areas.