The same insulation will hold more heat the thicker it is installed.
Rigid roof insulation r value per inch.
Rigid insulation r value by comparison usually ranges from r 4 0 to 6 5 and may get as high as r 8 7 depending on the insulation material.
Estimated r value of asbestos insulation.
With premium polyiso manufacturing atlas is able to produce the highest effective r values with minimal material thickness.
Polyiso is typically used with a foil facing and it has an r value of 7 0 to 8 0 per inch of thickness.
For a 1 in thick panel may vary based on region standard r value of r 5 8 per inch the manufacturing process starts with liquid foam not recyclable has to be sprayed against a substrate to form a rigid panel so all iso panels are faced.
Polyisocyanurate also known as polyiso is seen in all kinds of commercial building applications and more recently with residential building projects.
Most often used in roofing applications average cost of 70 per sq.
When it comes to insulation performance the difference is in the details.
All products in the acfoam polyiso roof insulation family are closed cell rigid foam insulation board flat or tapered.
The reflective foil facing makes it an excellent insulation board when radiant heat is involved.