Extruded Polystyrene
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Building a Budget-Friendly Unvented Cathedral Roof
To lower the cost of roof insulation, plan ahead
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A Buyer’s Guide to Insulation
Is there a "best" kind? It all depends on your point of view.
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Insulation Makers Win EPA Reprieve
A planned phase-out of a chemical blowing agent with high global warming potential stalls
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Thermal Drift of Polyiso and XPS
As these rigid foam products age, their R-value decreases
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A New Blowing Agent With a Lower Environmental Impact
Honeywell begins production of a new blowing agent for foam insulation with a lower global warming potential than commonly used agents
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Polyiso Insulation Performance in Cold Climates
Although extruded polystyrene (XPS) is rated at R-5 per inch, it performs better than R-6 polyiso in cold temperatures
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How to Install Rigid Foam Sheathing
What you need to know to install polyisocyanurate, XPS, or EPS on the outside of your walls
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The Hardest Insulating Job Ever
I’ve done a bunch of home weatherizing and insulating projects over the years; let me tell you about the worst.
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How Much Insulation is Needed?
Standard residential construction in much of the country is 2x4 framing with fiberglass insulation, achieving a paltry R-10 or so in the walls. If insulation is installed at all on…