Seal & Stain
Professional sealant and stain application for decks, fences, patios, and concrete surfaces. We prep, clean, and coat — extending the life of your outdoor investments by years.
Portland’s Rain and Sun Will Destroy Unprotected Wood in a Few Short Years
Cedar looks beautiful when it’s new. Give it three or four Portland winters without a protective finish and it turns silver, splits at the grain, and starts to rot from the inside out. The same goes for pine fences, pergola beams, and any exposed wood on your property. Concrete isn’t immune either — freeze-thaw cycles crack unsealed surfaces, and UV exposure fades stamped color within a couple of seasons. Sealing and staining is the single most effective way to extend the life of these materials. We handle the full process: thorough cleaning, proper dry time, and expert application of the right product for your surface and your aesthetic preference.
Finish Options Tailored to Your Surface and Style
Multiple product types, each suited to different materials and visual preferences.
Transparent Sealers
Water-repellent protection that preserves the natural look of wood or concrete. No color change — just invisible defense against moisture penetration.
Semi-Transparent Stains
Adds rich color while letting the natural wood grain show through. Ideal for cedar decks and fences where you want warmth without hiding the character.
Solid Stains
Full-coverage color that masks imperfections and provides maximum UV protection. Best for older wood surfaces that need cosmetic renewal alongside weather defense.
Concrete Sealers
Wet-look, matte, or anti-slip finishes for driveways, patios, and stamped concrete. Seals pores against water intrusion and prevents freeze-thaw spalling.
Moisture Meter Monitoring
We check wood moisture content before applying any product. Staining damp wood traps moisture inside and causes peeling. We only coat surfaces that are properly dried.
1-Year Application Warranty
Every seal and stain job comes with a one-year warranty on application quality. If the finish peels, flakes, or fails prematurely, we make it right at no charge.
Our Seal & Stain Process
Proper preparation is what separates a finish that lasts from one that peels.
Deep Cleaning
Every surface gets a thorough wash before any product goes on. For wood, we use a low-pressure soft wash with wood-safe cleaners that remove dirt, mildew, and old finish residue without damaging the grain.
Drying & Moisture Testing
Wood needs to reach the right moisture content before stain or sealer can bond properly. We use a pin-type moisture meter to verify conditions. In Portland’s climate, this step often requires 24 to 48 hours between cleaning and coating.
Product Application
We apply your chosen product using brushes, rollers, or sprayers depending on the surface type and product requirements. Two coats are standard for high-traffic areas. We mask off adjacent surfaces to keep lines clean and edges sharp.
Cure Time & Walk-Through
Most products need 24 to 72 hours to cure fully, depending on temperature and humidity. We brief you on care instructions, foot traffic timelines, and when to expect furniture placement. A follow-up check ensures everything cured as expected.
Why Every Portland Deck Needs a Protective Finish
Wood is a porous, organic material. Left exposed to the elements, it absorbs water, swells, shrinks, cracks, and eventually rots. Portland’s climate accelerates this process dramatically. Nine months of persistent rain saturates unprotected wood fibers, and the brief but intense summer UV bleaches color and breaks down lignin — the compound that gives wood its structural integrity. An unprotected cedar deck in the Portland metro area shows visible degradation within two to three years. Boards gray out, splinter at the surface, and develop black mildew staining in areas that stay damp. After five to eight years without treatment, structural damage begins: soft spots in boards, fastener corrosion, and joist rot that can turn a simple maintenance issue into a costly rebuild.
A properly applied sealer or stain creates a barrier between your wood and these forces. Water beads and runs off instead of soaking in. UV blockers in quality stain products prevent solar damage. The wood stays dimensionally stable through wet-dry cycles, which means fewer cracks, fewer splinters, and a surface that feels solid underfoot for much longer. Sealed decks in Portland routinely last 15 to 20 years with periodic recoating, compared to 5 to 8 years without any protection at all.
Choosing the Right Product for Your Surface
There’s no universal “best” finish. The right product depends on what you’re coating, what look you want, and how much maintenance you’re willing to commit to. Here’s how we guide our Portland clients through the decision.
- New cedar deck — Semi-transparent stain is the most popular choice. It enhances the wood’s natural tone while letting the grain pattern show through, and it offers strong water and UV resistance.
- Aging pine fence — Solid stain covers gray, weathered wood and minor imperfections while providing the heaviest pigment protection against UV breakdown.
- Stamped concrete patio — A clear or tinted concrete sealer protects the color and prevents water from penetrating the surface, which is critical for avoiding freeze-thaw spalling in Portland’s winter months.
- Natural stone or flagstone — Transparent sealers that don’t alter the stone’s appearance are typically preferred. They repel water without creating a glossy film that looks unnatural on stone.
- High-traffic deck areas — Two-coat application with a product rated for foot traffic. Anti-slip additives are available for surfaces around pools, hot tubs, or covered entries where wet foot traffic is common.
Why Cleaning Before Sealing Isn’t Optional
Applying sealer or stain over a dirty surface is the most common DIY mistake we see. It looks fine for a few weeks, then the finish starts peeling, bubbling, or wearing through in patches. The reason is simple: the product bonds to whatever is on the surface. If that surface has a layer of dirt, mildew, oxidized wood cells, or old flaking finish, the new coat bonds to that debris layer instead of the wood or concrete itself. When the debris eventually separates from the substrate, the new finish goes with it. Professional preparation removes all of that. Our cleaning process strips surfaces down to fresh, sound material. On wood, this means removing gray oxidation, mildew, and old product residue. On concrete, it means clearing efflorescence, dirt, and any deteriorated sealer. Only then can a new finish achieve the deep, lasting bond that justifies the investment. This is why our clean-then-coat approach produces results that outlast hardware store seal jobs by a wide margin.
Seal & Stain FAQ
Practical answers for Portland homeowners considering protective finishes.
How often should I seal or stain my deck in Portland’s climate?
Most wood decks in the Portland area need a fresh coat every two to three years. The exact interval depends on sun exposure, foot traffic, and the product used. A quick water test tells you when it’s time: pour a small amount of water on the surface. If it soaks in instead of beading, the existing finish has worn through and it’s time for a recoat.
What’s the actual difference between a sealer and a stain?
A sealer is a clear or nearly clear product that repels water without changing the wood’s appearance. A stain contains pigment that adds color — ranging from lightly tinted (semi-transparent) to fully opaque (solid). Stains generally provide better UV protection because the pigment particles physically block sunlight. Sealers are ideal when you want to preserve the natural look; stains are better for long-term durability and color enhancement.
Can you seal stamped concrete without ruining the pattern?
Sealing actually enhances stamped concrete. A clear sealer deepens the color and makes the pattern more defined, while a matte sealer preserves the natural stone appearance. We apply with rollers to ensure even coverage without pooling in the textured areas. The finish also protects the integral color from UV fading, which is a common issue with unsealed stamped work in Portland’s summer sun.
How long does the process take from start to finish?
A typical deck project takes two visits over three to four days. Day one is cleaning. We then allow one to two days of drying time (weather dependent). Day two is the stain or sealer application. The finished surface needs an additional 24 to 72 hours to cure before foot traffic. We schedule around Portland’s weather forecast to ensure dry conditions during application and curing.
Should I clean my deck before sealing if it looks clean already?
Yes, always. Even a deck that appears clean to the eye has microscopic contaminants — pollen, mildew spores, oxidized wood cells, airborne dust — that prevent proper adhesion. Our cleaning also opens the wood pores, which allows the stain or sealer to penetrate deeper and bond more effectively. Skipping this step is the leading cause of premature finish failure.
What finish options do you offer for concrete surfaces?
We offer three primary concrete finish types: wet-look (a subtle gloss that darkens the concrete slightly and enhances aggregate visibility), matte (no sheen change, invisible protection), and anti-slip (a textured additive blended into the sealer for traction on sloped or frequently wet surfaces). All three provide equal water and chemical resistance. The choice is purely aesthetic and functional.
Protect Your Deck Before Portland’s Next Rainy Season
We’ll evaluate your surfaces, recommend the right product, and give you a firm quote. Every estimate is free, with no obligation.
Serving Portland, Beaverton, Lake Oswego, Tigard, Tualatin, Hillsboro, Gresham, Milwaukie, Oregon City, West Linn, Happy Valley, Clackamas, Wilsonville, Sherwood, and surrounding communities throughout the greater Portland metro area.