We installed a new central heating and cooling system in the Kuppersmith Project house, with much of the ductwork and one of the HVAC units located in the attic.

Icynene foam insulation was sprayed in the exterior walls as well as between the rafters in the attic. Icynene foam insulation is made from caster bean oil and quickly expands to 100 times its size upon contact.

Installing foam insulation between the rafters – instead of in the ceiling, as is done with fiberglass and cellulose insulation – turned the attic into a semi-conditioned space that will remain within 10 degrees of the conditioned interior of the house. It also eliminated the need for ventilation in the attic; which will reduce problems with dust, pollen, moisture, and mold in the attic.

Since ductwork for the HVAC system is located in the attic, conditioning the space takes much of the strain off the heating/cooling system. This will make the HVAC system more energy efficient, since the conditioned air in the ducts and the HVAC unit will not be exposed to the extreme temperatures found in most attics.

Watch this video to find out more.

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Thomas Boni

Thomas Boni is Today’s Homeowner Media's Digital Content Director. He is an award-winning multimedia journalist, having served as editor-in-chief of various Alabama and Florida newspapers from 2006-2018. Thomas earned more than 30 regional, state and national journalism awards and accolades during his news career. He has a passion for engaging, fact-based content and a keen eye for detail. He joined Today's Homeowner Media in 2018 and received recognition on the Marquis Who's Who list in 2023. He earned his Bachelor of Arts at Spring Hill College in 2005.

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