Housewrap functions as a weather-resistant barrier, preventing rain from getting into the wall assembly while allowing water vapor to pass to the exterior. If moisture from either direction is allowed to build up within stud or cavity walls, mold and rot can set in and fiberglass or cellulose insulation will lose its R-value due to heat-conducting moisture. House wrap may also serve as an air barrier if it is sealed carefully at seams.


WeatherSmart represents the next generation in housewrap technology, offering architects, specifiers, builders and homeowners an intelligent housewrap solution – one that delivers the ideal balance between water intrusion protection and moisture vapor breathability, so it can be used in any climate and behind most exterior claddings. The product is an integral part of Fortifiber Building Systems Group’s moisture control system for walls.

WeatherSmart was developed to meet the needs of building professionals who want the maximum flexibility in the selection of building materials. The product offers architects and builders the ideal level of vapor permeability, so they have the flexibility to specify the product for any North American hygrothermic region while the air barrier properties deliver the highest levels of performance.

Our team of employees and suppliers are among the most educated in the industry when it comes to working with building materials. Visit Heller Lumber Co. or contact us and speak to a knowledgeable staff member who will be able to assist you with all of your building supply needs.

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Heller Lumber Co.

Heller Lumber Co is a full service supplier of lumber and building supplies serving Chicago and Suburbs. Service is our goal at Heller Lumber Co. Our team will work to deliver quality products to your job in a timely manner. In many cases, we offer same or next day delivery service.

Do you have a question about your project? Our staff has, not just years, but DECADES of on-the-job training and is standing by to offer you expert advice.

Give us a call and experience the advantage of working with Heller Lumber Co!