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.
Firestone polyiso roof insulation r value.
Firestone iso 95 gl polyiso insulation has a higher r value than other insulation products while also outperforming competitive polyiso at low temperature.
The lttr test method has been updated to provide a more accurate prediction of the in service r value of polyiso roof insulation.
Manufactured with a heavy duty double coated non organic glass facer firestone resista polyiso insulation board is compatible with all fully adhered and mechanically.
Excellent lttr value compared to any other fm class 1 rated products of equivalent thickness.
Flat and tapered iso 95 gl insulation provides outstanding thermal performance on commercial roofing applications while providing positive rooftop drainage to help eliminate ponding water when tapered iso 95 gl insulation is used.
Understanding r value thursday december 13 2018 what does r value mean.
Firestone has been committed to offering a complete line of high performing roofing solutions as individual as your building.
Firestone isogard polyiso insulation goes even further and was the first product on the market to meet both astm c1289 required and recommended thermal performance values.
Roofing design professionals should now use 5 7 r inch as the design r value for permeable faced polyiso roofing products.
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.
All firestone polyisocyanurate foam insulations use epa accepted blowing agents.
Polyiso insulation thickness r value chart.
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.
This is a decrease from the current design value of 6 0 r inch.
The r value of your insulation can optimize your energy savings in any zone because it s highly energy efficient with the highest r value ratings per inch the use of iso 95 gl insulation in a firestone roofing system provides a cost effective solution for today s oof design r challenges and is preferred for any and every roofing system.
This industry issue update explains why the nrca recommends using a significantly lower r value for polyiso than pima does.
Recommended reading for anyone specifying polyiso insulation.
Polyiso has a high r value per inch compared to other insulation products.
Benefits of energyguard polyiso roof insulation include.
