Residential Cool Roof Requirements

Residential roofing options include asphalt shingles metal clay tiles and concrete tiles.

Residential cool roof requirements.

Buildings with at least r 38 ceiling insulation. Cool roofs can be made of a highly reflective type of paint a sheet covering or highly reflective tiles or shingles. 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.

Residential prescriptive requirements low rise residential buildings climate zone 13 15 10 15 0 20 0 75 75. The values depend on the climate zone and the slope of the roof per table 150 1 a. Radiant barrier in the attic. When installed as roof sheathing it is not per mitted to be installed directly over existing sheathing.

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. When installed as roof sheathing it is not per mitted to be installed directly over existing sheathing. Radiant barrier must be installed per manufacturers spec ifications. Buildings with at least r 30 ceiling insulation or.

These requirements apply only to low rise residential buildings that are mechanically heated or cooled conditioned space. A radiant barrier is installed in the attic meeting the radiant barrier requirements of section 152 f 2 of the. A cool roof under the same conditions could stay more than 50 f cooler and save energy and money by using less air conditioning. Requirements for roofing products.

Buildings with no ducts in the attic or. Standard or dark roofs can reach temperatures of 150 f or more in the summer sun. Residential cool roof requirements f building forms and handouts 2019 cbc cool roof req jan 2020 buildings with at least r 38 ceiling insulation. There are different cool roof standards for commercial low slope roofs and residential steep slope roofs.

Buildings with a radiant barrier in the attic. Residential cool roof requirements. Commercial cool roof options include bright white membranes and white coatings. Existing ducts in the attic are insulated to r6 and sealed hers verification is required.

Roofing product high profile s tile. Buildings in climate zones 10 11 13 and 14 r 3 or greater roof deck. Existing sheathing must be removed or a 1 x 4 shall be. Buildings with a radiant barrier in the attic.

Existing sheathing must be removed or a 1 x 4 shall be.