Residential Cool Roof Requirements

Residential cool roof requirements roofing product has a profile ratio rise to width of 1 to 5 for 50 percent or greater of the width of the roofing product high profile s tile.

Residential cool roof requirements.

When installed as roof sheathing it is not per mitted to be installed directly over existing sheathing. A cool roof under the same conditions could stay more than 50 f cooler and save energy and money by using less air conditioning. Radiant barrier in the attic. Buildings in climate zones 10 11 13 and 14 r 3 or greater roof deck.

Residential cool roof requirements under the provisions of the 2019 california energy code steep sloped 2 12 slope and greater re roof projects are required to comply with cool roof requirements when more than 50 of the roof is replaced in climate zone 11. Buildings with at least r 38 ceiling insulation. Residential cool roof requirements f building forms and handouts 2019 cbc cool roof req jan 2020 buildings with at least r 38 ceiling insulation. Buildings with at least r 30 ceiling insulation or.

There are different cool roof standards for commercial low slope roofs and residential steep slope roofs. Buildings with no ducts in the attic or. Radiant barrier must be installed per manufacturers spec ifications. Residential cool roof requirements.

Requirements for roofing products. Buildings with a radiant barrier in the attic. Residential roofing options include asphalt shingles metal clay tiles and concrete tiles. Cool roofs can be made of a highly reflective type of paint a sheet covering or highly reflective tiles or shingles.

A radiant barrier is installed in the attic meeting the radiant barrier requirements of section 152 f 2 of the. When installed as roof sheathing it is not per mitted to be installed directly over existing sheathing. Roofing product has a profile ratio rise to width of 1 to 5 for 50 percent or greater of the width of the roofing product high profile s tile. Existing proposed radiant barrier must be installed per manufacturers spec ifications.

Standard or dark roofs can reach temperatures of 150 f or more in the summer sun. Existing sheathing must be removed or a 1 x 4 shall be. Existing sheathing must be removed or a 1 x 4 shall be. The values depend on the climate zone and the slope of the roof per table 150 1 a.

Roofing product high profile s tile. Buildings with a radiant barrier in the attic. Residential prescriptive requirements low rise residential buildings climate zone 13 15 10 15 0 20 0 75 75. In california all new or replacement low slope roofs are required by the building energy efficiency standards title 24 to be cool roofs as are steep slope roofs in several california climate zones.

Radiant barrier in the attic.