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E18 | Westford Historic Renovation | Under a New Roof

This Old House, with trusted experts Tom Silva, Richard Trethewey, Jenn Nawada, and host Kevin O'Connor, is TV's original home-improvement show, following one whole-house renovation over several episodes.

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E18 | Westford Historic Renovation | Under a New Roof

Season 46 | Nashville Brick Cottage Episode 18 | 23m 42s | CC

Charlie and Tom Silva work in the attic, installing a hip beam and roof rafters to match the original roof. Downstairs, building scientist Joe Lstiburek discusses with Kevin O'Connor how insulating exterior walls can damage siding if energy flow isn't considered. Later, Mark McCullough brings in a stone cutter to cut through the original foundation, creating a garage door opening in the basement.

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Funding for THIS OLD HOUSE is provided by The Home Depot and Renewal By Andersen.