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Moisture Management Education

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Archives: October 2014

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Lots of housewrap manufacturers emphasize the importance of vapor permeability related to their products. Vapor permeability is an important characteristic in choosing a housewrap. If water vapor escapes the interior conditioned space or liquid water gets behind the housewrap from the exterior, the permeability of the housewrap protects the sheathing. It allows for water vapor to escape through the exterior of the housewrap. But what does Vapor Permeability mean? Permeability measures the...

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The main purpose of attic ventilation is to rid the attic of moisture. If moist air remains in the attic it can degrade the roof structure and contribute to moisture issues. Additionally, attic ventilation can help remove hot air in the summer and maintain cooler roof deck temperatures in the winter; which helps to control ice damming. A well-insulated and well ventilated attic is essential to energy efficiency. It seems counter-intuitive to insulate the attic and then cut holes, allowing air...

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Scott Wells, a THISisCarpentry contributor, recently installed HydroGap Drainable Housewrap on one of his customer’s homes. With the new code requirement in Oregon to have a 75% drainage rate in your wall assembly, he’s started seeing new drain wrap products in his market. He chose to use HydroGap because of the 1mm spacers that create a drainage gap, eliminating moisture from the wall. Also, being a 5 foot wide roll, it’s easy to install with just one person. Check out how Scott...

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Benjamin Obdyke is exhibiting this year at the GreenBuild International Conference and Expo on October 22-23 in New Orleans! Come see us this year at booth #449. We have some exciting new products to show you, like our SlickerHP rainscreen due out in early 2015. Plus, we’d like for you to get into the show on us (a $100 value)! Make sure you register for your free pass to the expo floor. Claim Your FREE Pass and use discount code BENJ0MT65 when prompted. Not only will we be...

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