Thickness Of Polyiso Roof Insul

Polyiso can be installed on both commercial and residential structures on the roof or in the wall.

Thickness of polyiso roof insul.

Understanding r value thursday december 13 2018 what does r value mean. Carlisle s tapered insulation helps promote rooftop drainage while providing excellent insulating value. As an example a 1 board label will include information from lttr s770 03. 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.

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

Application specific guidance polyisocyanurate insulation is available in 4 by 4 and 4 by 8 foot board sizes. Polyiso is used in roof wall ceiling and specialty applications within commercial and residential buildings of all types. Polyisocyanurate polyiso is a closed cell rigid foam board insulation that is bonded to facers on both sides which are composed of various organic and inorganic materials. Excellent lttr value compared to any other fm class 1 rated products of equivalent thickness.

Nrca recommends roof system designers specify a maximum 4 by 4 foot board size for poly isocyanurate adhered to a substrate. 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. Jm sheathing r values will not change. Tapered polyiso minimizes the negative effects of ponding water and extends the service life of a roof.

Polyiso insulation is the best choice as a cost effective energy efficient and environmentally responsible insulation product. When we say that hunter polyiso is the cornerstone of green buildings we re not just blowing smoke. 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.

When it comes to thermal efficiency and a wide range of building applications polyiso insulation is the 1 insulating material available today. Polyisocyanurate insulation by its desired thickness and not lttr or r value to avoid possible confusion.