Richard travels to Salt Lake City to replace a shower valve he has never seen before in his career with a conventional pressure balanced one; Nathan demonstrates how to refinish stair treads; Tom helps a homeowner remove moss from his roof and prevent it from growing back.

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Products and Services from this episode

Shower valve
Temptrol Pressure Balanced Tub/Shower Valve manufactured by Symmons
https://www.symmons.com/

Sink hole cover
Sink hole cover manufactured by Danco
https://www.danco.com/

Sander
Rotex 150 multi-mode sander manufactured by Festool
http://www.festoolusa.com/

Shop vacuum
HEPA Dust Extractor with a brush attachment by Festool
http://www.festoolusa.com/

Finish
Water based polyurethane by Rust-Oleum
https://www.rustoleum.com/

About Ask This Old House TV: From the makers of This Old House, America’s first and most trusted home improvement show, Ask This Old House answers the steady stream of home improvement questions asked by viewers across the United States. Covering topics from landscaping to electrical to HVAC and plumbing to painting and more. Ask This Old House features the experts from This Old House, including general contractor Tom Silva, plumbing and heating expert Richard Trethewey, landscape contractor Jenn Nawada, master carpenter Norm Abram, and host Kevin O’Connor. ASK This Old House helps you protect and preserve your greatest investment—your home.

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ASK This Old House | Weird Shower Valve, Mossy Roof (S18 E14) FULL EPISODE
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