From This Old House.
Kevin O’Connor finds Matt Whitbeck on the roof of the Saratoga house, inspecting the ridge as the roofing crew works below them. Kevin notes an atypical detail: underlayment covering the ridge. Matt explains how roofs are typically vented (a “cold roof”) and why. He also points out that there will be mechanicals in the attic, which would pose various issues if left in a vented space. This roof will have spray foam under the roof deck—a completely airtight and ventless system called a “hot roof”. It’s an approach that’s been around for a while—but it has one main flaw that’s been discovered over time: rotting at the ridge. Matt has a fix for it: the diffusion vent.
SUBSCRIBE to This Old House: http://bit.ly/SubscribeThisOldHouse.
Where to find it?
Roof shingles manufacturer: GAF [https://www.gaf.com/en-us]
Looking for more step by step guidance on how to complete projects around the house? Join This Old House Insider to stream over 1,000 episodes commercial-free: https://bit.ly/2GPiYbH
Want weekly tips, project guides, and behind-the-scenes content from the TOH crew?
Sign up for our free newsletter here: https://www.thisoldhouse.com/pages/newsletters
Plus, download our FREE app for full-episode streaming to your connected TV, phone or tablet: https://www.thisoldhouse.com/pages/streaming-app
About This Old House TV: This Old House is America’s first and most trusted home improvement show. Each season, we renovate two different historic homes—one step at a time—featuring quality craftsmanship and the latest in modern technology. We demystify home improvement and provide ideas and information so, whether you are doing it yourself or hiring out contractors, you’ll know the right way to do things or the questions to ask. Our experts including general contractor Tom Silva, plumbing and heating expert Richard Trethewey, landscape contractor Jenn Nawada, master carpenter Norm Abram, and host Kevin O’Connor give you the tools you need to protect and preserve your greatest investment—your home.
Follow This Old House:
Facebook: http://bit.ly/ThisOldHouseFB
Twitter: http://bit.ly/ThisOldHouseTwitter
Pinterest: http://bit.ly/ThisOldHousePinterest
Instagram: http://bit.ly/ThisOldHouseIG
How to Seal and Vent a Hot Roof | This Old House
https://www.youtube.com/user/thisoldhouse/
