Fan-Fold Foam Board Elmira NY

Fan-fold foam board in Elmira 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

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
T And D Sales And Service
(607)733-0139
2330 State Route 352
Elmira, NY
Davis Landscaping
(607)739-1190
703 South Main Street # C
Horseheads, NY
Davis Building Maintenance
(570)596-7070
Doty Hill Road
Gillett, PA
Earthguard
(607)562-3797
147 Fox Street
Corning, NY
R And R Landscaping
(607)733-3738
Obrien Pl
Elmira, NY
STONE WATERSCAPING
(607)732-0214
516 ELIZABETH ST
ELMIRA, NY
Wassel Excavating Landscaping
(607)733-8567
918 Hoffman Street
Elmira, NY
PA Field and Creek Stone
(607)727-8885
309 Riverside Drive
Athens, PA

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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