Fan-Fold Foam Board Corning NY

Fan-fold foam board in Corning 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.

Local Companies

Earthguard
(607)562-3797
147 Fox Street
Corning, NY
Loveless Blacktop & Landscaping Inc
(607)733-3160
1774 Cedar Street
Elmira, NY
Wassel Excavating Landscaping
(607)733-8567
918 Hoffman Street
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Banfield-Baker Corporation
(607)739-8771
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Savona Sand And Gravel Inc
(607)583-2400
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Davis Garden Center
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454 Main
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General Fabrication & Equipment CO Inc
(607)733-3381
1702 Cedar Street
Elmira, NY
Robinson Building Materials Inc
(607)734-7470
1808 West Water Street
Elmira, NY
Wenzel Landscaping
(607)733-8180
103 East 11th Street
Elmira Heights, NY
Chemung County BLDG Supply Inc
(607)796-5588
3269 South Main Street
Horseheads, NY

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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