The Backyard Showdown

Backyard School — everything outside the pool

Backyard School is how to care for everything outside the pool, starting with the ground you stand on: patios, pavers and decks. Most patio advice is one recipe for every surface: bleach, a pressure washer, a sealer. The people who make the surfaces disagree. The stone institute allows a mild bleach on outdoor stone and bans vinegar; the brick institute caps the pressure washer at 400 psi; TimberTech bans the very "composite deck cleaners" sold for its boards. So everything here starts with what your patio is made of, and every rule is the maker's or the trade body's own.

Outdoor kitchen

Plan the layout and the budget before you buy the appliances.

Clean it

What to put on each surface, and what never to.

Stop it coming back

Mold, algae and moss on a patio in a humid climate.

Seal it

Penetrating or film-forming — chosen by material, not by the shine on the can.

Shopping for what goes on the patio rather than what goes on the floor? Patio furniture showdowns · Fire & heat · Lighting