Iecc Roof Insulation Requirements

The iecc requirement above is limited to those buildings where the roof assembly contains above deck insulation and is part of the building s thermal envelope.

Iecc roof insulation requirements.

Roofing specific requirements of iecc 2015 may 18 2017 10 arizona roofing contractors association webinar tapered insulation international energy conservation code 2015 edition c402 2 2 roof assembly. The international codes i codes are the widely accepted comprehensive set of model codes used in the us and abroad to help ensure the engineering of safe sustainable affordable and resilient structures. The ibc requires removal of the existing roofing materials down to the deck and installing a new roof covering assembly. The second r value is for unfaced fiberglass insulation r 13 r 19 batts installed parallel to the purlins.

Exterior roof complies with table c402 2 11 commercial cool roof or insulation of r 15 if present attics above insulation are vented and attics below insulation unvented roof surface slope of not less than unit vertical in 12 units horizontal i e 1 48 or 2 1 code says 21 tropical zone. A minimum r 3 5 thermal spacer block is placed above the purlin batt and the roof deck is secured to the purlins. The minimum thermal resistance r value of the insulating material installed either between the roof. Specific insulation requirements of section c402 2 thermal requirements of either.

Or component performance alternative of section c402 1 5 roof solar reflectance and thermal emittance fenestration in building envelope. R value based method of section c402 1 3 u c and f factor based method of section c402 1 4.