Most often used in roofing applications average cost of 70 per sq.
Rigid roof insulation r value per inch.
All products in the acfoam polyiso roof insulation family are closed cell rigid foam insulation board flat or tapered.
With premium polyiso manufacturing atlas is able to produce the highest effective r values with minimal material thickness.
Asbestos corrugated paper pipe insulation.
Traditional loose fill insulation such as fiberglass or cellulose has an r value between r 2 0 and 3 5 per inch of thickness.
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.
Polyiso is typically used with a foil facing and it has an r value of 7 0 to 8 0 per inch of thickness.
Polyisocyanurate also known as polyiso is seen in all kinds of commercial building applications and more recently with residential building projects.
Eight inches of poor quality.
When it comes to insulation performance the difference is in the details.
Estimated r value of asbestos insulation.