Step-by-Step Guide to Deck Sanding and Staining

Deck sanding and staining is the most effective way to bring a tired, gray deck back to life. Done right, it smooths out rough boards, opens the wood so stain can soak in, and protects the deck through another round of Michigan weather. Done wrong, it leaves blotchy color and peeling stain within a year. Here is how the process works, step by step.

When to Sand and Stain in Michigan

Timing matters more than most people expect. The wood must be dry, and the weather needs to cooperate for a couple of days. In West Michigan the best windows are usually late spring and early fall, when temperatures are moderate and the sun is not baking the boards. Avoid staining right after rain, in direct midday sun on hot days, or when a cold night is in the forecast.

Step 1: Inspect and Repair

Walk the entire deck. Reset or replace popped nails and screws, replace cracked or soft boards, and check railings and stairs for movement. Sanding over a raised fastener will tear sandpaper and can damage a sander.

Step 2: Clean the Deck

Remove furniture, planters and rugs, then sweep thoroughly. Apply a deck cleaner made for your type of wood to lift dirt, mildew and graying. If the deck has an old film-forming stain that is peeling, a stripper is needed to remove it. Use only as much pressure as the wood can handle; too much pressure raises the grain and gouges soft woods like cedar.

Step 3: Brighten and Let It Dry

A wood brightener neutralizes cleaners and strippers and restores the natural color of the wood. Then let the deck dry completely, usually a day or two of dry weather. Staining damp wood is one of the most common reasons stain fails.

Step 4: Sand

Sanding removes splinters and raised fibers and opens the grain so stain absorbs evenly. A medium grit is typical for deck boards; going too fine can close the grain and keep stain from penetrating. Sand railings and stair treads too, since those are the surfaces hands and feet touch most. Sweep and blow off all dust before staining.

Step 5: Apply the Stain

Choose a penetrating stain suited to your wood and how much sun the deck gets. Semi-transparent stains show the grain while adding UV protection; solid stains hide more but can peel on horizontal boards if over-applied. Work a few boards at a time from end to end to avoid lap marks, and back-brush to work the stain into the wood. Wipe off any excess that has not absorbed.

Step 6: Let It Cure

Keep foot traffic off for at least a day and wait longer before putting furniture back. Follow the drying times on the product label, and plan around the weather.

Common Mistakes to Avoid

• Staining wood that is still wet from cleaning or rain
• Skipping the brightener after using a cleaner or stripper
• Applying a thick coat that sits on top instead of soaking in
• Staining in direct afternoon sun, which dries the stain too fast
• Using high pressure that splinters soft wood

Should You Hire a Pro?

Sanding and staining a small, sound deck is a manageable DIY project. Large, multi-level or lakefront decks, decks with peeling stain, and dense hardwoods are where a professional crew saves the most time and frustration. Learn more about the benefits of professional deck refinishing.

Planning a deck project along the lakeshore? See our deck services or contact us for a free on-site estimate. Call or text 269-292-2612.