Exterior Rigid Foam Roof Insulation

One way to limit this is to keep the sheathing warm by adding a layer of rigid foam insulation.

Exterior rigid foam roof insulation.

Install rigid insulation board in multiple layers with joints offset vertically and horizontally between adjacent layers. Rigid insulation layers exterior to existing roof sheathing must provide sufficient thermal insulation r value to control condensation risk see climate specific guidance. Continuous rigid insulation is a construction solution that provides a thermally efficient building enclosure. Rigid foam insulation packs a lot of r value into a thin package but not all rigid foam performs the same.

Rigid foam sheathing is a form of insulation continuous insulation to be exact that s applied to the exterior of the building. Set your store to see local availability add to cart. Rigid insulation sheathing is made of a rigid plastic foam that is typically sold in 4 8 or 4. Fiberglass insulated walls opened up in the middle of the winter are often covered in a thin layer of frost on the interior side of the wall sheathing.

Buy 48 or more 15 18. Not only does it provide high r values but foam board insulation is also easy to install lightweight and can be used in any room of your home. This article explains what rigid foam is and the benefits it offers. Foamular extruded polystyrene xps rigid foam insulation offers foamular extruded polystyrene xps rigid foam insulation offers a comprehensive line of products choose the strength you need from 15 to 60 psi and exceptional moisture resistance.

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. The glass fiber reinforcement contributes to improved fire performance and dimensional stability. Owens corning foamular 150 1 in. Inviting exterior air into the center of your roof assembly between two layers of insulation has the effect of making your rigid foam worthless if you go this route you ll have to spend a lot of time conscientiously sealing up the air intake openings and air outlets for each ventilation channel whether at the soffit vents or at the.

In other words rigid foam can be applied on walls foundations and roofs and works great for both retrofits and new constructions. Choose rigid insulation wisely and consider the effect its characteristics will have on the performance of the your project overall product cost and the best way to get the bang for your buck. Because of its resistance to moisture foam board insulation is a great choice whenever and wherever there is a chance it could get wet such as. R 5 scored square edge rigid foam board insulation sheathing model 20we view the owens corning exterior insulation 18 98 18 98.

Foam board insulation is more expensive than. Install nailbase for cladding.