R Value Of Steel Roof Deck

0 04 12 fiberglass insulation.

R value of steel roof deck.

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. Some types of insulation will have different r values for the same thickness due to differences in density and some will even increase in r value per inch as the total thickness increases. Minimum insulation r value requirements by state. This matrix provides the minimum insulation r values required by local and state municipalities.

0 12 3 fiberglass insulation. The r value depends on the type of material its thickness and its density. Based on astm c518 calculation method the door has an r value of up to 11 but using astm c1363 tested operable the same door only have an r value of up to 3 5. 0 48 1 fiberglass insulation.

Incidents of deck corrosion have been reported in cases where the insulation is in direct contact with steel roof decks and there is moisture present. 0 21 2 fiberglass insulation. Non residential above roof deck. 0 075 6 fiberglass insulation.

Molded expanded polystyrene insulation also referred to as meps can have an r value that will vary from less than 4 00 to slightly more than 4 00. 0 027 concrete deck roof. 0 052 8 fiberglass insulation. 0 10 4 fiberglass insulation.

A metal inner liner panel usually between 0 4 and 0 6 mm thick and with a shallow profile. U value calculation built up metal cladding with rail and bracket fixings this leaflet deals with twin skin metal roof and wall cladding that is built up on site and which consists of. A rail and bracket spacer system that creates a. Edge metal specialty.

Inside the home is a cathedral ceiling throughout so no attic space or insulation inside the 2x6 t g viewed from inside is also the roof planking. On the outside is 1 rigid foam felt underlayment and asphalt shingles. This is a huge difference and essentially comes down to astm c518 being a theoretical maximum based on a steady state thermal test of only a portion of the door panel. The u value includes the thermal resistance values for roofing and both inside and outside air films in addition to the insulation material.

I would like to add r value with 3 or 4 inches of rigid insulation on top off existing roof.