Water Filter, Bathroom Caulking | Ask TOH

On this episode of Ask This Old House Richard travels to Los Angeles to update a water filter on a retro faucet; Mark explains the uses for different types of masonry jointers; Nathan explains when and how to use a Japanese pull saw; Tom demonstrates the correct materials and techniques required for re-caulking a bathtub.   How to Install a Water Filter Under the Sink Richard travels to Los Angeles to update a water filter to preserve the look of a retro faucet. Where to find it?