XPS
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Does Your Insulation Have Low Embodied Carbon?
Before deciding on what kind of insulation you're going to use, consider it's global warming potential
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Researchers Raise Questions About Rigid Foam Flame Retardant
A flame retardant used in polystyrene insulation can break down into other components whose environmental risks are unknown, researchers say
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When There Are Too Many Insulation Options
A homeowner in Michigan sorts through the choices for a new house, weighing wall thickness as well as insulation type
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What the Pact on HFCs Will Mean for Builders
The phase-out of hydrofluorocarbons will usher in new versions of foam insulation and updated air conditioners and heat pumps — but not in the immediate future
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Thermal Drift of Polyiso and XPS
As these rigid foam products age, their R-value decreases
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Choosing Rigid Foam
Knowing when to use polyisocyanurate, expanded polystyrene, and extruded polystyrene
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How to Insulate a Foundation
Choosing the right material and the right technique for a house with a walkout basement
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Friendlier Foam Insulation On the Way, Eventually
New blowing agents that will lower the global warming potential of XPS and spray foam are under development, but they they aren’t ready yet
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How to Install Rigid Foam On Top of Roof Sheathing
This type of insulated roof assembly limits thermal bridging through rafters
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In Cold Climates, R-5 Foam Beats R-6
Although extruded polystyrene (XPS) is rated at R-5 per inch, it performs better than R-6 polyiso in cold temperatures
