BASC Search | Building America Solution Center

This exhaust fan duct opens into the attic rather than exiting through the roof and mold has begun to form on the underside of the deck sheathing and on the rafter due to the moist air exiting the duct

This exhaust fan duct opens into the attic rather than exiting through the roof and mold has begun to form on the underside of the deck sheathing and on the rafter due to the moist air exiting the duct

Image

The location of furnace and water heater flues can be identified by going outside and looking for metal pipes coming through the roof.

Image

Exhaust fan ducts should be made of rigid metal ducting not flexible corrugated ducts like these and the ducts should be attached to the roof or soffit to vent completely to the outside not left open in the attic near an attic vent

Exhaust fan ducts should be made of rigid metal ducting not flexible corrugated ducts like these and the ducts should be attached to the roof or soffit to vent completely to the outside not left open in the attic near an attic vent

Image

Venting Vapor, BSI-088

Reference

Guide providing information on controlling attic ductwork sweating.

Small Commercial Building Fact Sheet - Building Envelope

Reference

Fact sheet describing building envelope performance measures applicable to residential and small commercial construction.

DOE ZERH HIA 2014 Case Study: Southeast Volusia Habitat for Humanity, Edgewater, FL

Case Study

Case study describing a DOE Zero Energy Ready Home 2014 Housing Innovation Award winner that scored HERS 49 without PV.