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Correction to This Article
The article in some editions of the Nov. 3 Real Estate section incorrectly said that DuPont makes Fiberweb Typar. Fiberweb makes the weather protection system.
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Mold May Meet Its Match in New Building Products

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¿ Georgia-Pacific's DensArmor Plus paperless wallboard ( http://www.gp.com/build), listed for microbial resistance by the Greenguard Environmental Institute. It was installed with inorganic glues and tapes.

¿ An antimicrobial spray developed by American Mold Guard ( http://www.americanmoldguard.com), which was used to coat the wallboard and all the wood in the house.

¿ DuPont's Fiberweb Typar ( http://www.typar.com), in which the house and roof were wrapped. The product acts as an air and moisture barrier while allowing moisture vapor to escape from the wall cavity to the outside. It was installed before the exterior siding, which was natural cedar in keeping with the rural, lakefront view.

¿ Home Slicker, a ventilating, self-draining rain screen that covered the Typar house wrap. Made by Benjamin Obdyke Inc. ( http://www.benjaminobdyke.com), Home Slicker drains moisture from behind the siding and down the house, reducing the chances of premature peeling or blistering of finishes. It allows about inch for airflow.

¿ A specialized coating made by Cabot ( http://www.cabotstain.com), with which the Western red cedar siding was sprayed.

¿ Optima insulation, made by CertainTeed ( http://www.certainteed.com) and used for the walls of Perry's house, and CertainTeed's DryRight insulation for the ceiling cavities, both of which are designed to deny mold a food source. The insulation is covered with CertainTeed's MemBrain, a permeable vapor barrier.


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