https://stream.echo6.co/videos/watch/05752701-0383-4c03-9d27-7b06eb51db50 Tom Silva shows Kevin O’Connor the careful process of installing rafters for a cantilevered roof. Inside, Richard Trethewey solves a venting problem for the kitchen sink before tackling the AC ductwork puzzle. Later, Tom and Kevin install snow cleats on the roof. SUBSCRIBE to This Old House: http://bit.ly/SubscribeThisOldHouse Enjoying full-episodes of This Old House? Join This Old House INSIDER to stream every episode ever made of This Old House (over 1,000 hours), commercial-free. https://bit.ly/3bnWadr   Plus, download our FREE app for full-episode streaming to your connected TV, phone or tablet: https://bit.ly/34RYEP5 The final roof section of the house is over the new living room addition. It’s unique because it cantilevers out over a balcony. But as Kevin finds out from Tom, that means installing the rafters takes more care. In the kitchen, the main counter is up against a wall of windows and that causes a problem for venting the drain for the sink. Richard shows Kevin how to install a Bow Vent to send the pipe down through the basement. Outside, Kevin finds Tom giving our apprentice Erick a lesson in letting siding breathe. The HVAC crew has been busy with ductwork and today Richard is helping install an air handler for the bedroom wing. A flat roof in New England can turn into a wintery mess if ice and snow slide onto a doorway. Kevin finds Tom installing cleats on the roof over an entrance. Follow This Old House : Facebook: http://bit.ly/ThisOldHouseFB Twitter: http://bit.ly/ThisOldHouseTwitter Pinterest: http://bit.ly/ThisOldHousePinterest Instagram: http://bit.ly/ThisOldHouseIG   For more on This Old House, visit us at: http://bit.ly/ThisOldHouseWebsite This Old House | Can We Cantilever (S40 E21) | FULL EPISODE https://www.youtube.com/user/thisoldhouse/ Tue, 12 May 2026 13:33:34 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/05752701-0383-4c03-9d27-7b06eb51db50 All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.