Bad boards come out before any stain goes on
Start with a walk across the deck and a hard look at the wood. Stain is a finish. It does not hold a soft board together, and stain over rot just colors the rot.
- Push a screwdriver into boards near the house, around posts and at board ends where water sits. Soft wood needs to be replaced.
- Look for split, cupped or splintered boards that catch bare feet.
- Push on railings and balusters. A loose rail is a safety problem before it is a stain problem.
- Check the underside of pergola beams, fascia and rails for clean round holes about a half inch across.
- Note any rail, post cap or rafter that a limb or a storm cracked.
New boards next to old ones
Replacement boards will not match the old wood right away. New lumber is lighter, and pressure-treated boards are often still wet from treatment and need time to dry before they take stain evenly.
Cleaning and brightening the whole deck brings old and new wood closer together. A semi-transparent or solid stain hides the difference better than a clear or transparent one. If the new boards are too wet to stain, it is better to stain the rest and come back for them than to trap moisture under a coat.
Carpenter bees and storm damage
Carpenter bees drill round holes into weathered or bare cedar and pine, usually on the underside of beams, fascia and rails where the wood stays dry. Each hole turns into a tunnel inside the board. Woodpeckers then tear the wood open to reach the larvae, and that is often how people find the problem.
The holes should be treated and sealed before staining. Shallow damage can be filled and sanded. Boards riddled with tunnels or torn up by woodpeckers should be replaced, because stain will not hold a broken face together. Bees go after bare, weathered wood more than a sound finish, which is one more reason to keep the stain up.
Storm damage needs the same attention. A limb that hit a rail, hail that dented soft cedar or wind that pulled boards loose should be repaired first. If a storm did the damage, take photos before any repair and talk to your insurance carrier, since that can affect how the repair is handled.
Cleaning, brightening and stripping a failed coat
Weathered wood has a gray layer of loose fibers, dirt, mildew and old stain on top. Stain over that layer soaks into the gray and then lets go with it. A wood cleaner scrubbed in and rinsed at low pressure does most of the work. High pressure is a common mistake. It tears soft grain out of cedar and pine, raises fuzz and leaves wand marks that show through stain for years. A brightener after cleaning brings back the natural color and neutralizes the cleaner so the stain goes on even.
If the old stain is peeling, flaking or patchy, new stain on top will peel with it, so the failed coat has to come off first. A stripper loosens it, and sanding removes what is left and smooths the raised grain. Railings and spindles take the most hand work.
Solid stain is the hardest to remove. Once a deck has a solid coat, getting back to a natural look may not be possible without heavy sanding or new boards, so think hard before choosing solid for the first time. Sanding and stripping both take real labor on every board, and they belong on the written estimate as their own lines. Ours lists every surface, the prep, the products and the number of coats.
The wood has to be dry
Stain works by soaking into wood. Wet wood is already full, so the stain sits on top, dries unevenly and lets go early. After cleaning, after rain and after a heavy dew, the wood needs time to dry out.
Here is a test anyone can do. Sprinkle some water on the boards. If it soaks in within a few minutes, the wood is ready to take stain. If it beads up and sits, the wood is still wet or old finish is still on it.
Weather matters here the same way it does for paint. Stain applied in full sun on a hot afternoon flashes off before it can soak in, and rain within a day can wash it out. We only work outside on dry days warm enough for the finish to cure, and we tell you when weather moves a day.
Transparent, semi-transparent or solid
The choice is a trade between how much wood you see and how long the finish lasts. On a fence or cedar siding, where nobody walks, solid stain holds up well. On decks, many people pair a semi-transparent floor with solid-stained rails and posts, which gives a painted-rail look without the wear problems on the boards underfoot.
- Transparent stain shows nearly all of the grain and natural color, but it blocks the least sun and needs recoating the most often.
- Semi-transparent stain adds color and still lets the grain show, and it is the usual choice for deck floors and pergolas.
- Solid stain covers the grain like paint but keeps the wood texture, protects the longest against sun and can wear or peel in the traffic paths on a deck floor.
How to tell when it is due again
Stain does not fail all at once. The deck floor and the rail tops go first because they take the most sun and water, while fences, siding and pergola posts last longer. Catching it at the fading stage means a cleaning and a fresh coat. Waiting until it peels means stripping and sanding first, which is a lot more work.
Check your deck every spring once the snow is gone, when winter damage shows the most. If you are not sure where your wood stands, text a photo to (815) 585-1750 for a fast read.
- Water soaks into the boards instead of beading up.
- The color has faded and the wood is turning gray again.
- The finish has worn through on the steps, in front of the door and along the traffic paths.
- The stain is peeling or flaking anywhere.
