Hardwood floor refinishing is an art--you should know how to read wood, whether it's healthy or not, suffering from moisture or dryness, and how it lives in the home it's in.

What makes the best hardwood-floor vacuum? Top pick: Miele Classic C1 Pure Suction Upgrade pick: Miele Complete C3 Calima PowerLine Best cordless vacuum for hardwood floors: Dyson V12 Detect Slim ...