Practical advice on deck staining, fence maintenance, and wood care in Colorado. Real numbers. Honest takes on what works and what doesn't.
This deck had two stains fighting each other — an old film-forming coating that wore through unevenly, and a penetrating stain that couldn't absorb wherever the film was still intact. The fix wasn't a different product. It was stripping back to bare wood, brightening with an oxalic acid wash, and confirming moisture below 15% before staining. Start to finish, in photos.
New wildfire codes in Boulder, Louisville, and unincorporated Boulder County require noncombustible fencing near homes. Here's what each jurisdiction actually requires, what the $500 rebate covers, and why replacing just the section of fence attached to your house is usually the right fix.
Film-forming stains look great when new. The problem shows up years later, when they peel and you're looking at a full strip before anything new can go on. Penetrating oils age differently — they fade rather than fail, which means lower prep costs every time you refresh the finish.
Most of what determines whether a stain job holds up for years — or starts peeling within a season — happens before the stain is ever applied. Here's how we approach every fence and deck project, start to finish.
Wait at least two weeks after a new fence is installed — then check moisture content with a meter, not a calendar. Below 15% is the threshold. In Colorado's dry climate, cedar fences often get there in three to four weeks. Pressure-treated wood takes longer.
Oil-based penetrating stain outlasts water-based on fences and decks in Colorado. The reason is penetration depth — oil carries product deeper into the grain and leaves no surface film to blister. The bigger problem is film-forming stains, which fail faster than either and make future re-application significantly harder.
Deck staining in Colorado lasts 2–4 years on horizontal surfaces. Vertical fence boards hold stain longer — typically 3–5 years — because they don't pool water or take direct foot traffic. Here's what affects that number most.
Grey wood tone, water absorption instead of beading, cracking boards, visible mildew, and faded colour. If you see three of these before October, you're better off treating it now than waiting until spring.
Cedar stains better than pressure-treated lumber in nearly every case. The difference shows up in year two: cedar holds oil-based stain deeper into the grain, while PT wood's chemical treatment slows penetration and shortens the life of the finish.
New wood often has mill glaze — a compressed surface layer that blocks stain penetration. Staining too early traps moisture and causes peeling within months. Most new lumber needs 30–90 days to open up. We check moisture content before we touch it.
Staining over dirty or weathered wood traps contaminants under the finish. The stain may look fine for a few weeks, then peel in patches. A proper wash removes mould, dirt, and grey oxidation so the product bonds to clean wood — not to debris.
Fence staining in Boulder runs $2.00 to $4.50 per square foot, with most residential jobs landing between $1,000 and $3,200 total. Where you fall in that range depends on fence size, wood condition, and how much prep it needs before stain goes on.