Polyiso Roof Insulation Thickness

Features and benefits achieves a ul class a combustible deck rating at a 1 thickness.

Polyiso roof insulation thickness.

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. In q4 2013 jm will modify its packaging to reflect lttr values by both test methods. Application specific guidance polyisocyanurate insulation is available in 4 by 4 and 4 by 8 foot board sizes.

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. Excellent lttr value compared to any other fm class 1 rated products of equivalent 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. It can be attached using a variety of methods and is compatible with all of carlisle s single ply systems.

With premium polyiso manufacturing atlas is able to produce the highest effective r values with minimal material thickness. Polyisocyanurate polyiso is a closed cell rigid foam insulation board made with recycled content that is widely used in commercial roofing. Polyiso insulation is the best choice as a cost effective energy efficient and environmentally responsible insulation product. Benefits of energyguard polyiso roof insulation include.

Polyiso insulation thickness r value chart. As an example a 1 board label will include information from lttr s770 03. 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. 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.

Polyisocyanurate insulation by its desired thickness and not lttr or r value to avoid possible confusion. All products in the acfoam polyiso roof insulation family are closed cell rigid foam insulation board flat or tapered. When it comes to insulation performance the difference is in the details. Nrca recommends roof system designers specify a maximum 4 by 4 foot board size for poly isocyanurate adhered to a substrate.

What is polyiso insulation. Jm s wall sheathing line ap foil and ci max are not governed by lttr test methods and have different r value measurement standards.