Conditioned Attic How To Insulate

The loss of energy efficiency means some designers choose to move the ductwork into the conditioned areas of the home and leave the attics unvented.

Conditioned attic how to insulate.

Close the window attic vent somehow since im not sure. This is to keep an. The irc has permitted unvented conditioned attics since 2006 with certain requirements. The acceptance of unvented conditioned attics continues to grow among builders and building officials.

Cover up all the pink foam with some vapor barrier say 6mil plastic since it needs to face the living storage area. Hire a pro to install spray foam insulation. If you re considering turning your attic into conditioned storage or living space it s worth changing tactics to insulate between the rafters and wall joists instead of the floor. Moving the insulation layer from the attic floor to the sloped roof brings the attic into the home s conditioned envelope and greatly reduces the energy penalties associated with attic ductwork.

The roof deck in an unvented attic must be exceptionally airtight. You can use rigid foam panels or do as tom silva does with nearly all houses these days. Code requirements vary across the country. Poorly insulated ducting can cause heat loss in colder months and the loss of conditioned air in the summer in vented attics.

In some cases a conditioned attic assembly may be desired where scissor trusses make it difficult to insulate the floor or in cathedral ceilings where the intent is to turn the attic into living space. Before insulating seal any air leaks and make roof and other necessary repairs. Fine homebuilding more musings of an energy nerd ventilation requirements in the covid era. Close the connection between attics with a door since i may still need access to that new attic.

If it is located in a conditioned part of the house also remember to insulate and air seal your attic access. And insulate that attic door im putting in. Insulate and air seal any knee walls vertical walls with attic space directly behind them in your home as well. These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation.