Fiberboard Roof Insulation R Value

Also included is the hugely helpful insulation zip code calculator that spells out the suggested amount of r value necessary for the different portions of a structure like foundation interior and.

Fiberboard roof insulation r value.

To convert rsi to r value multiply the rsi by 5 67826. 30 divide this per inch numberby 2 to obtain the r value for 1 2 medium density fiberboard r 1 22. To convert the r value of a specific thickness of a material to rsi divide the r value by 5 67826. High r value 2 5 r.

Moisture will be trapped inside causing mold growth and further reducing its efficiency. Fiberboard insulating sheathing regular density per inch. You should of course see the manufacturer provided technical data sheet for the r value of specific products. Included is our r value guide detailing the suggested amount of insulation dependent upon zone as provided by the u s.

Additionally attic condensation and leaks will make fiberboard wet. Huebert fiberboard roof insulation must be dry when it is used on a roof. 30 divide this per inch number by 2 to obtain the r value for 1 2 regular density fiberboard r 1 32. This also means easy hoisting staging and maneuvering around the roof.

Therefore you get practically 0 r value out of it. R value of various materials. For example if you have a type of insulation that has an r value of r 5 per inch of thickness you will need a depth of 6 inches of this insulation installed in your attic to reach r 30 if you live in zones 2 or 3. It has only 1 r value per inch and is always installed in 0 5 inch thickness.

Huebert fiberboard roof insulation makes a good substrate insulation in re roof situations providing the existing roofing or insulation is clear of debris fairly level and moisture free. Protector hd allows easy efficient scoring cutting and snapping which permits fast tight fabrication and all in a low dust environment. R value is used in the united states. Provides significantly more thermal insulation r value than wood fiber or gypsum boards.

For a very good introductory overview article on r value see r values over at the website of. 3 rsi is the metric expression of r value m 2 k w. Rsi r value système international is the metric equivalent. For example two inches of extruded polystyrene with an r value of 11 has an rsi of 1.

Fiberboard is not an insulation. C factor 1 2. These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation. For instance if you have a material with an r value of 12 attached to another material with an r value of 3 then both materials combined have an r value of 15.