S18 E14: Weird Shower Valve, Mossy Roof | Preview A look at what you’ll see in this episode of Ask This Old House by This Old House Share this story Share Share All sharing options for: S18 E14: Weird Shower Valve, Mossy Roof | Preview Pinterest Email Pocket Flipboard Here’s what you’ll see in this episode of Ask This Old House: Richard replaces a shower valve; Nathan refinishes stair treads; Tom cleans off a roof. Will be live on Sunday, February 9 at 7pm. Next Up In Front Page How to Resurface Worn Concrete Why Nathan Gilbert Loved Being a Boy Scout E1: Autumn Checklist for Your Home How to Get Hot Water with a Recirculating Pump Fall Fertilizing: Essential Tips to Make Your Yard Grow How to Build an Outdoor Kitchen