Polyiso Roof Insulation Thickness

In q4 2013 jm will modify its packaging to reflect lttr values by both test methods.

Polyiso roof insulation thickness.

Polyiso has a high r value per inch compared to other insulation products. Polyisocyanurate polyiso is a closed cell rigid foam insulation board made with recycled content that is widely used in commercial roofing. Benefits of energyguard polyiso roof insulation include. What is polyiso insulation.

All products in the acfoam polyiso roof insulation family are closed cell rigid foam insulation board flat or tapered. Polyiso roof insulation is the most widely used product for low slope commercial roofing and provides a high r value that helps meet today s energy code requirements without the added thickness or weight of other products. Jm s wall sheathing line ap foil and ci max are not governed by lttr test methods and have different r value measurement standards. With premium polyiso manufacturing atlas is able to produce the highest effective r values with minimal material thickness.

A higher r value means that the insulation will do a better job of holding in conditioned air whether that s heat in the winter or cool air in the summer. Insulation overview securshield polyiso is a rigid roof insulation panel composed of a closed cell polyisocyanurate foam core bonded during the manufacturing process to premium performance coated glass facers cgf. Jm sheathing r values will not change. Polyiso insulation thickness r value chart.

Nrca recommends roof system designers specify a maximum 4 by 4 foot board size for poly isocyanurate adhered to a substrate. Application specific guidance polyisocyanurate insulation is available in 4 by 4 and 4 by 8 foot board sizes. It can be attached using a variety of methods and is compatible with all of carlisle s single ply systems. Understanding r value thursday december 13 2018 what does r value mean.

Fm approved subject to the conditions of approval as a roof insulation when installed as shown in the current edition of the factory mutual research approvals guide. Excellent lttr value compared to any other fm class 1 rated products of equivalent thickness. Polyiso insulation is the best choice as a cost effective energy efficient and environmentally responsible insulation product. Features and benefits achieves a ul class a combustible deck rating at a 1 thickness.

Polyiso is unique in that the r value increases with the thickness of the foam so three inches of polyiso has a higher r value per inch than two inches. As an example a 1 board label will include information from lttr s770 03.