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Moisture Management Education

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Category: Attic Ventilation

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​Many homes are improperly or inadequately ventilated even when some form of ventilation is installed. Signs of improper ventilation include: Damp insulation Unnaturally dark or discolored decking Dark streaks on roof boards around nails Orange resin beads on rafters signaling sweating wood Moisture on roof boards & rafters Crumbling, curled roof shingles Adequate roof venting, properly installed helps pull fresh air into the attic and pushes heat and...

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​Venting products are normally rated with a Net Free Area (NFA). The NFA is the open area that exists for air to pass through. The key to effective venting is to balance air intake (at your eaves, soffits or fascias) and air exhaust (at or near your roof ridge). Ideally the NFA of the soffits should be equal or greater than that of the ridge vent and in no case should the amount of exhaust ventilation exceed the amount of intake ventilation. As a general rule, the space ventilated should have...

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Mar 9
2016

What are ice dams?

​A major concern in prolonging and safeguarding your roof, especially in snow-belt and mountain areas, is ice damming. Ice Dams are created when melting snow freezes on the lower part of the roof, placing roof, walls, ceilings, siding, gutters and down-spouts at risk for costly structural damage. Freezing occurs because the lower part of the roof is cooler than the ridge area. A ridge vent system helps reduce the possibility of ice damming since it delivers a constant flow of air that...

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​Ridge Vent works on the basis of several principles. Adequate soffit ventilation coupled with ridge ventilation produces a pathway for a continuous airflow along the entire underside of the roof deck. Airflow is maintained two ways. First, hot air naturally rises and exits out the ridge vent, pulling in cool air from below. Second, positive airflow across the ridge of the house creates a “venturi effect”, or a negative pressure, which pulls air out of the ridge vent and brings in...

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That’s right; here at Benjamin Obdyke we’ll be shamelessly plugging our aptly named Shark Vent Ridge Vent all week during Shark Week. Our newest addition to our ridge vent line, Shark Vent offers the “best of both worlds” for contractors looking for a product with the rigidity of a sectional vent, but with the faster installation of a nail-gunnable roll. Shark Vent effectively extracts heat and moisture from residential attics with a Net Free Area (NFA) of 12in./lin.ft.2. The...

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Matt Risinger of Risinger Homes recently featured Cedar Breather and Rapid Ridge 7 on a wood roof renovation project done on a historical house in Austin, Texas. The house, originally built in 1850 by architect Abner Cook, is one of the oldest homes in Austin. Prior to the renovation the house featured an asphalt shingle roof which was not fitting with the style of the home. Check out the video below to see Matt’s best practices and intricacies for installing a wood shingle roof. About...

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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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The Obdyke team returned to the International Roofing Expo in Las Vegas last week. We were anxious to attend to unveil our latest and greatest ridge vent solution, Shark Vent (and escape the freezing temps and snow!!). The show (and the weather) did not dissapoint. You could feel the energy and excitement of the show as soon as you walked onto the expo floor. We spoke to contractors, distributors, and architects from all over the US & Canada - the consensus was that the industry is...

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Following up from our recent talks about unique applications of Benjamin Obdyke products; check out these two high-profile applications in which the builders decided to Build Better® with products from Benjamin Obdyke in untraditional ways. Cougar Vent® – Not Your Ordinary Ridge Vent! The Journal of Light Construction recently featured a builder with a cutting edge mindset who was looking for unique was to improve his building design—so how did he achieve this when designing his...

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New Roof Ridge Vent From Benjamin Obdyke In response to demand by roofing contractors and building supply distributors, Benjamin Obdyke has introduced a new lightweight, classic-style roof ridge vent called Cougar™ Ridge Vent. Benjamin Obdyke, the company which introduced the first rolled ridge vent product to the construction market, introduces Cougar™ Ridge Vent, a lightweight, classic-style roof ridge vent without fabric that promotes attic ventilation and optimizes the life,...

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Ridge Vent System Stands Up To Rigorous Testing Procedures. Xtractor Vent® XLP Turbo, an externally baffled rolled ridge vent available from Benjamin Obdyke Incorporated, has recently received a Miami-Dade County Notice of Acceptance, stating that Xtractor Vent XLP Turbo complies with the high velocity hurricane zone of the Florida Building Code. In addition, the product has received the Florida Building Code Product Approval recognizing the use of Xtractor Vent XLP Turbo in the state of...

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