R 38 Rigid Roof Insulation

The higher the r value the greater the insulation performance.

R 38 rigid roof insulation. 10 thick r 38c ecotouch thermal batt insulation prevents moisture damage and help assure long roof life by providing 1 of ventilation air space between the insulation and roof deck. When choosing rigid foam insulation you have three main options. Where do i find out how thick my. Know exactly how much you need with our project calculators.

R panel is manufactured with a closed cell polyisocyanurate foam core bonded to fiberglass reinforced facers and designed for use over metal nailable and non nailable roof decks with a variety of membrane systems. Let s use the r value of iko s polyiso insulation enerfoil tm as an example. Per the 2012 virginia residential code table n1102 1 1 i know that i need to have r 38 roof insulation. When determining how much insulation you need don t guesstimate calculate.

I m designing a house with a cathedral ceiling with exposed structural beams with structural decking above and then rigid foam insulation above the decking. With premium polyiso manufacturing atlas is able to produce the highest effective r values with minimal material thickness. This type of rigid foam usually comes with a reflective foil facing on both sides so it can also serve as a radiant barrier. Knauf insulation r 38 ecobatt kraft faced high density fiberglass insulation batt 10 1 4 in.

Johns manville r panel rigid roof insulation board offers r values of up to r 23 6 providing high thermal efficiency. All products in the acfoam polyiso roof insulation family are closed cell rigid foam insulation board flat or tapered. Depending on the type of insulation you choose and the desired r value you want for your facility you may need to build up a few layers of insulation. Sized for proper ventilation r 38c ecotouch thermal batt insulation is designed to eliminate r value loss caused by compressing standard r 38 products in 2x12 cathedral ceiling construction.

R value measures how well certain building insulation materials can resist heat. Foamular xps roof insulation for commercial buildings page 5 foamular xps roof insulation for commercial buildings foamular xps insulation is a rigid foam insulation which meets the needs of today s design professionals for a truly sustainable insulation product. When it comes to insulation performance the difference is in the details. Most insulation manufacturers will first list their insulation s r value for a one inch sample then they ll give you a chart demonstrating the other r values you can achieve if you install a thicker version of their product.

After the roof deck is ready the rigid foam insulation is installed.