R Value Rigid Insulation Roof

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.

R value rigid insulation roof.

The higher the r value the greater the insulation performance. The slower the better. It s not about how much heat the insulation retains but how slowly it allows heat to move through it. Traditional loose fill insulation such as fiberglass or cellulose has an r value between r 2 0 and 3 5 per inch of thickness.

R value is used as a measurement of the effectiveness of thermal insulating materials. 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. When determining how much insulation you need don t guesstimate calculate. Rigid insulation is usually made up of fibrous materials or plastic foams.

A rigid roof insulation board with high thermal efficiency johns manville r panel is compatible with multiple types of membrane systems. R panel is manufactured with a closed cell polyisocyanurate foam core bonded to fiberglass reinforced facers and designed for use over metal nailable and non nailable roof decks with a variety of membrane systems. Know exactly how much you need with our project calculators. The higher the r value the better a material performs as a thermal insulator.

Johns manville r panel rigid roof insulation board offers r values of up to r 23 6 providing high thermal efficiency. R value measures how well certain building insulation materials can resist heat.