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Building Science

Beyond Comfort: Ultra-Aire’s Nikki Krueger Discusses Whole House Dehumidifying Systems

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Ultra-Aire’s Nikki Krueger discusses whole house dehumidifying systems with Spray Foam Insulation & Roofing Magazine Spray Foam Insulation & Roofing Magazine: How exactly do dehumidifiers work? Nikki Krueger: Whole house dehumidifiers not only provide dedicated moisture control but also provide controlled fresh air ventilation and high efficiency air filtration. The units integrate with the home’s heating and cooling system to provide ...

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Ending the Age of Excess: Calculate the Proper Size of HVAC Systems

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In the March/April Issue of Spray Foam Insulation & Roofing Magazine, we discussed how recent changes in the 2009 & 2012 International Energy Conservation Code (IECC) affected the construction of building envelopes. In the process of doing so, we asserted the building code mantra “build tight, ventilate right.” While the previous article focused more on the former part of the ...

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Spray Foam Man on a Mission

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Imagine a hurricane-proof house – a building raised over 6 feet above the Base Flood Elevation (BFE) that is built with such structural fortitude that it withstands Category 5 winds whirling at over 150 miles-per-hour. This was the house that Eric Price, Spray Foam Inspector, had envisioned prior to the hurricane that devastated New Orleans in 2005: Katrina. When she ...

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Ice Dams: Spray Foam Insulation to the Rescue

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Anybody living in snow-strewn regions is familiar with the smattering of icicles dangling from rooftops during the winter months. A charming addition to Christmas decorations? Not quite – icicles are actually a dangerous, costly nuisance that flagships an improperly insulated home and attic. Icicles are a common result of the aptly named “ice dam,” and are the manifestation of a ...

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Calculating Yield in Spray Polyurethane Foam Applications

Calculating Spray Foam Yield

A common question among spray foam contractors is “how much yield can I get from my spray foam?” Obtaining good yield from your spray foam can lead to a better bottom line. In many cases, a spray foam contractor will base their purchasing decision on the yield they expect to obtain from a nominal low density, medium density or high ...

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Ignition Barriers and Thermal Barriers in Attics: International Residential Code (IRC) Requirements

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The 2009 International Residential Code establishes prescriptive and alternative performance requirements for spray polyurethane foam (SPF) plastic insulation when installed in residential attic applications to ensure adequate performance of foam in a fire. Meeting Code Requirements: There are two ways to meet the requirements for an ignition barrier or thermal barriers. The first way is the prescriptive requirements listed in the ...

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Unvented Attics for Existing Buildings

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As residential construction has slowed over the past few years, many insulation contractors have turned to weatherization projects that add insulation and air sealing to existing homes. For SPF contractors, one of the easiest and most accessible areas to insulate and air seal is the band joist and to create unvented attics and crawlspaces. Unvented attics can be easily created ...

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The Battle Against Severe Weather Disasters: Closed-Cell Spray Polyurethane Foam in Hurricane Zones

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Monolithic Domes: Quite Possibly the World’s Safest Severe Weather Buildings

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A Monolithic Dome starts as a concrete ring foundation, reinforced with steel rebar. For smaller domes, an integrated floor and ring foundation may be used. Vertical steel bars embedded in the ring beam footing are later attached to the steel, reinforcing the dome itself. The Airform, fabricated to a proper shape and size, is attached to the concrete base. Using ...

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Spray Foam Adhesives Proven to Strengthen Your Building’s Roof

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More and more hurricanes continue to slam to the U.S. coastline each year. In the past decade, billions of dollars worth of property damage and lost lives have prompted research and product development to help prevent this continued destruction to our homes and businesses. Since 1989, over $130 billion in losses were filed due to hurricane related insurance claims. A ...

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