Residential Energy Code Compliance Outline 2015 IECC

Energy Code Compliance Outline 2015 IECC

 

Poly seal:

Windows and Doors must be sealed with foam or caulk.

Sill plate must be sealed on the inside with foam or caulk.

All penetrations of top plate/ceiling into attic, must be sealed with foam or caulk.

All wall penetrations to the exterior MUST be sealed with foam or caulk.

Blower Door testing is mandatory.  Not to exceed 3 air changes per hour at 50 pascals.

Duct Tightness testing is mandatory.  Tested at 25 pascals, total leakage, less than or equal to 4 cubic feet per minute per 100 square foot of conditioned floor area.  Exception: when the ducts and air handlers are ENTIRELY within the building thermal envelope.

 

Insulation:

All pier and beam / raised floors must be insulated with R-19 insulation or higher.

OR:  UNVENTED Crawl space walls must be insulated R-5 continuous or R-13 cavity insulation, with vapor barrier over exposed earth.

All exterior walls must be insulated with R-20 cavity or R-13 cavity WITH R-5 continuous insulation or higher.

Ceilings must be insulated with R-38 if there is attic space and R-30 if no attic space (Cathedral) and that is limited to 500 Sg Ft. TOTAL or 20% of ceiling whichever is less.

Attic access ladders and or hatches, must be insulated the same as the attic and have a weather seal.

 

HVAC / Service Water

All ducts in unconditioned space/ATTICS – must use R-8 ducting

Mechanical system piping carrying fluid over 104° or below 55° must be insulated with R-3 insulation.

 

Window and doors:

Must have a U-factor of .35 or less.

Must have a SHGC of .25 or less

 

Lighting:

All can lights must be air-tight type.

Minimum of 75% of lighting must be high efficiency. (anything but incandescent)