The top boards of a deck get the paint and the attention. The ledger
connection to the house, posts, stairs, and railings carry the load. I
suggest a slow walk before planning a wash or new finish, with a look
underneath from a safe, accessible spot.
Notice loose or wobbly rails, soft or splintering boards, rusted
fasteners, settlement, and water collecting at the connection to the
house. Keep leaves from building up where wood needs to dry. Clean and
refinish according to the decking material’s instructions; high-pressure
washing can damage wood and some composites. A coating will not
strengthen a decayed post or correct a missing connection.
If a rail moves, stairs feel unstable, framing is soft, or the deck
pulls away from the house, limit use and have a qualified deck
contractor evaluate and repair it. Don’t load it for a gathering while
waiting for a cosmetic project. A permit or code review may apply to
substantial repair work, so ask the contractor and local authority.
After a repair, keep documentation of the scope and materials. I have
local contractor contacts on my Helpful
Resources page. The Homeowner
Tools & Supplies guide includes general maintenance basics;
choose cleaners and coatings for the specific deck material.