Roof Membrane R

The average r value for some common roof materials include.

Roof membrane r.

The membrane is attached using 12 o c. Roof membrane available in 40 50 and 60 mil thickness. W it is the optimal choice for valleys and transition areas such as ridges rake edges and drip edges. R value is calculated by more than just the insulation.

Please note that the r values for roof membranes shingles tiles air films and roof deck materials might or might not be permitted by your local code to be included when total roof assembly r value is being calculated for the purpose of satisfying energy code requirements. Epdm commercial roofing membranes with superior durability and flexibility epdm is a smart roofing solution. Duro last 50 mil membrane is manufactured with 28 mil of thickness on the top performance layer far exceeding industry standards as well as competitor systems with equal and even greater mil values. Our epdm production facility is one of the world s most technologically advanced allowing us to extrude our sheets instead of using the traditional calendering process.

Pattern with perimeter sheets attached 6 o c. Membrane roofing is a roof system that creates a continuous watertight covering to protect the interior of a building. Available in 9 in. Always check with your local code authority.

Mechanically attached installation uses heavy duty screws and barbed plates to hold the membrane down tightly and is not affected by possible iso de lamination. Membrane roofs are predominately used as a flat roofing system since they are watertight which is critical where water is not shed immediately. To calculate the r value of a roof system your contractor will take into account the underlayment coverboards adhesives insulation and even the membrane. Both types have an r value ranging from 4 r to 6 r per 1 inch of insulation thickness.