Ask This Old House - Season 20 Episode 13
Mark shares the story of how he became a mason; Tom explains why wood rots on houses, how to prevent it, and how to repair it if it occurs; Ross explores heat pump technology.
- genus: Documentary
- Studio: PBS
- keyword: home renovation
- cast: Richard Trethewey, Norm Abram, Roger Cook, Kevin O'Connor, Tom Silva, Steve Thomas Rooney
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