Nj Insulated Duct Unconditioned Attic

Batts in narrow cavities are cut to fit or narrow cavities are filled by sprayed blown insulation.

Nj insulated duct unconditioned attic.

Duct shafts utility penetrations knee walls and flue shafts opening to exterior or unconditioned space are sealed. All other ducts shall be sealed and insulated to a minimum of r 6. In addition if you re building a new home in new jersey or remodeling make sure any attic decking that provides additional storage space or a platform for a heating and or cooling unit or hot water tank is raised above the ceiling joists to leave room for adequate insulation. 9 out of 10 homes in the u s.

Ted has more than a few cobwebs in his attic. Air permeable insulation is inside of an air barrier. Ducts must be tested for tightness as specified in iecc section 403 2 2 except where the air handler and all ducts are located within conditioned space. The 1 800 square foot brick ranch in climate zone 4 dates from the 1960s but the previous owner installed both a furnace and ductwork in the attic just four years ago.

Common attic air leaks this image shows how and where air can easily escape from a home s attic. Following are illustrations identifying common problems and what proper attic sealing and insulation should look like. Air permeable insulation is not used as a sealing material. Ted also has inherited a powered attic ventilator.

Insulate and air seal any knee walls vertical walls with attic space directly behind them in your home as well. Supply ducts in attics shall be sealed and insulated to a minimum of r 8.