By Dan Gregory, Originally Published in Eye On Design
Common sense maintenance will keep this redwood deck looking new (photo courtesy The California Redwood Company).
I asked a contractor friend, Brian Garrison, for advice on keeping a cedar or redwood deck in good shape. Here’s his step-by-step
- Repair. Replace any nails or screws that have
popped. Use galvanized square head deck screws: they last longer than
nails and don’t pop out as easily. Fix squeaks by adding screws.
- Clean. A power washer is quick but strips all of the softwood along with the dirt and grime, so use a deck wash or cleaner such as Behrs or
a diluted bleach and water mixture of 10% bleach to 90% water. A broom
or brush will help lift the dirt and tannins from the deck. Most of the
deck wash systems recommend 2-3 rounds of applications. Do this early in
the morning – don’t let the cleanser dry before you can rinse it off
because it contains bleaching chemicals that will stain the wood.
- Rinse thoroughly. Allow 2-3 days drying time before applying finish.
- Apply a durable and long-lasting finish. An
oil-based deck stain protects the wood longer than a water sealer, which
must be applied at least once every 6 months to work properly. The
finish should be water repellent or waterproof, not just
water-resistant, provide UV (ultraviolet) protection, and contain a
mildewcide if mildew is a problem. Brian used Preserva Wood® Pacific Redwood Penetrating Finish
stain. Apply with a paint brush or sprayer — a roller will create a
sticky mess. Don’t leave puddles or pools, which dry slowly and can
become sticky. Allow a couple of days to dry thoroughly. Cost for
finishing a 1,000 sq. ft. deck: about $75.