Polyiso On Roof

Excellent lttr value compared to any other fm class 1 rated products of equivalent thickness.

Polyiso on roof.

Currently polyisocyanurate offers the highest thermal resistance per inch of thickness allowing for higher value in roof designs which are limited in overall thickness. Acfoam polyiso roof insulation acfoam ii is the signature acfoam product from atlas and features non asphaltic fiber reinforced organic felt facers. 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. Acfoam iii features inorganic coated glass facers which have a significantly more efficient use of solvent based.

Polyiso is a versatile high performance insulation solution that is suitable for a multitude of applications. Polyiso or polyisocyanurate is a rigid foam insulation used in more than 70 of commercial roof construction and offers a continuous insulation solution for commercial flat low slope roof insulation and wall assemblies. If you have a vented unconditioned attic then installing polyiso above your roof sheathing is a waste of polyiso. Polyiso is most commonly used as a continuous insulation for roofs and walls and as a protective roof cover board.

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. 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. Polyiso is used in roof wall ceiling and specialty applications within commercial and residential buildings of all types. Acfoam supreme is equipped.

Other materials may only have a fifty percent increase in r value when their thickness is doubled. If you want to install a thicker layer of insulation then all of the insulation belongs together in your case on the attic floor. Take the money that you would have spent on the polyiso and use it for a thicker layer of cellulose. As a foil faced polyisocyanurate foam insulation enerfoil tm s r value actually more than doubles when it is twice as thick as you can see from the chart above.