Fan-Fold Foam Board Clifton Park NY

Fan-fold foam board in Clifton Park is widely marketed as an easy fix for improving the thermal performance and water resistance of walls when re-siding. But if not applied properly, this option could lead to moisture problems, according to leading building-science experts.

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Stiles Excavating & Trucking Inc
(518)877-7305
1909 Route 9
Clifton Park, NY
Wunderlich Sand & Gravel
(518)785-6084
Sparrowbush Road
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T & L Electric
(518)527-0037
2240 First Av
Schenectady, NY
Wolberg Electrical Supply - Schenectady
(518)381-9231
152 Erie Boulevard
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The Friendly Earth CO
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224 Newport Ct
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Turf Laboratory Inc
(518)785-8873
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Nelson Landscaping
(518)372-8240
227 Division Street
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White Birch Nursery & Landscaping
(518)355-1710
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Hydtech Lawn & Landscape
(518)587-9971
632 Maple Av
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Provided By:

Source: REMODELING Magazine
Publication date: September 1, 2005

By Clayton DeKorne

Best practice calls for stripping off existing siding, then installing a good weather barrier.

Fan-fold foam board is widely marketed as an easy fix for improving the thermal performance and water resistance of walls when re-siding. But if not applied properly, this option could lead to moisture problems, according to leading building-science experts.

At about ¼-inch-thick, fan-fold foam board adds only R-1 to R-1.5 to the wall system, a negligible insulation improvement. Foil-faced products promise higher R-values, but only when installed with a minimum ¾-inch air space in front of them, an option that requires siding over strapping. According to foam board manufacturers, the advantage of fan-fold is really that the board provides a consistent surface over the old siding, eliminating cracks and crevices that lead to energy-robbing drafts. All manufacturers recommend taping the foam to help stop air leaks and prevent water that gets through the siding from leaking behind the foam.

Photo: Courtesy THE JOURNAL OF LIGHT CONSTRUCTION
Certainly, the foam board provides a smooth working surface for installing new siding, but whether there is a significant improvement in thermal performance is hotly debated. “The danger is that you are putting an impermeable layer over the wall,” explains Steve Easley, a building consultant who specializes in helping building.

Click here to read full article from Replacement Contractor

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