Dow Styrofoam Structural Insulated Sheathing

That s not thick enough for your climate so you shouldn t use sis.

Dow styrofoam structural insulated sheathing.

0 55 in x 4 ft x 8 ft. Residential sheathing is an extruded polystyrene foam board with plastic facers on both sides. Thermax sheathing is a nonstructural rigid board insulation with a glass fiber infused polyisocyanurate foam core laminated between 1 0 mil smooth reflective aluminum faces. There s a growing buzz among green and energy efficient builders about styrofoam sis a new structural insulated sheathing product from dow corporation that offers builders effective wall bracing significant r value and a functioning drainage plane in a single application of material.

The styrofoam sis structural insulated sheathing from dow combines three functions in one product. Styrofoam residential sheathing is an extruded polystyrene foam board with plastic film facers on both sides providing a long term insulating performance of r 5 per inch sizing this 1 in thick 4ft x 8ft residential sheathing has a tongue and groove edge treatment to help boards fit snugly against one another and ensure energy efficiency. You can use either 1 5 inch of xps 1 5 inch of polyiso or 2 inches of eps. Thermax sheathing is a non structural rigid board insulation consisting of a glass fiber infused polyisocyanurate foam core laminated between 1 0 mil smooth reflective aluminum facers on both sides.

Builders can use inch r 3 panels to sheathe entire exteriors or 1 inch thick r 5 5 panels as shear panels on corners to match up with 1 inch foam sheathing on the rest of the exterior. Thermax sheathing specially designed to hold a class a fire rating. Using styrofoam brand residential sheathing could lead to fewer callbacks resulting in an enhanced reputation for builders. It offers a high r value r 3 at 0 5 inch.

Thermax sheathing can be installed exposed to the. Structural lateral bracing and transverse loads good insulation performance and a water resistive barrier. Extruded polystyrene foam insulation like styrofoam brand residential sheathing is inherently resistant to moisture which can wreak havoc on other building materials. The one inch thick product has an r value of r 5 5.

Shop dow r 3 common. The glass fiber reinforcement contributes to improved fire performance and dimensional stability. The glass fiber reinforcement provides improved fire performance and dimensional stability. Here s more information on structural insulated sheathing.

Joints between panels are sealed with weathermate tape.