Concrete Patio in Redmond, WA
Concrete patios in Redmond need drainage pitch, textured finishes, and finish choices that stay practical through wet Pacific Northwest winters.
Call (425) 650-9677 or use the homepage contact form. Include the address, photos if available, drainage or moss concerns, and what is cracked, settling, or holding water.
Patios in Pacific Northwest Conditions
A Redmond concrete patio requires drainage pitch, textured finish, wet-season base prep, and a sealing plan. A patio that looks clean in August can turn slick by January if water sits on the surface or shade keeps the slab damp all day.
The most common Redmond patio failure Kevin sees is a slab that was poured flat. Even 1–2 degrees off horizontal means water sits on the surface, moss establishes in the joints and surface texture, the slab becomes slippery in winter, and edges start failing as water infiltrates. Every Kevin patio includes a minimum 1% drainage slope confirmed at the estimate.
Redmond's Douglas fir and cedar canopy shades patios for much of the year. Shade plus moisture is the ideal moss growth environment. Broom finish and exposed aggregate both have texture that discourages moss establishment compared to smooth finishes, but correct drainage pitch matters more than surface texture. Kevin discusses canopy coverage and drainage at every Redmond patio estimate.
"Our shaded backyard patio had turned green with moss and algae every winter and was slippery from October through April. Kevin replaced it with exposed aggregate, corrected the drainage pitch, and explained that the original slab had no slope at all. The new surface handles Redmond rain without becoming a hazard. It dries faster and the moss hasn't established itself."
— Rachel K., Redmond WA
Finish Options and Sealing
Broom finish: practical, traction-friendly, and easy to maintain. It works well for patios where function matters more than decorative finish.
Exposed aggregate: a strong Pacific Northwest option because the texture gives traction and a more finished Eastside look. It is useful on shaded patios where smooth concrete would stay slick.
Stamped concrete: decorative, but it needs the right sealer schedule to hold up under Redmond moisture and tree canopy debris.
PNW moisture requires more frequent sealing attention than dry climates. Exposed aggregate and stamped concrete especially benefit from a penetrating sealer that resists moisture infiltration in the joints. Kevin applies or recommends the right sealer at completion and explains what to watch for before the next wet season.
Pricing
Broom-finish patio: $3,000–$7,000. Stamped or exposed aggregate: $5,000–$12,000. King County labor rates are higher than national averages. Drainage planning and base prep for Pacific Northwest conditions are included. Free estimates: call (425) 650-9677.
For related drainage planning, see Redmond driveway concrete.
Redmond Concrete Patio FAQs
How much does a concrete patio cost in Redmond, WA?
Most broom-finish patios in Redmond run $3,000–$7,000. Stamped or exposed aggregate patios usually run $5,000–$12,000 depending on size, access, finish, drainage, and sealing requirements.
What concrete finish works best for a shaded Pacific Northwest patio?
Broom finish and exposed aggregate both work well because they provide traction and surface texture. Exposed aggregate is particularly strong for shaded Eastside patios where moss pressure is highest.
How do I prevent moss on my concrete patio in Redmond?
Prevent moss by making sure the patio drains quickly, using a traction-friendly finish, keeping organic debris off the surface, and resealing on schedule. Kevin designs drainage pitch into every Redmond patio pour.
How much does a concrete patio cost in Redmond, WA?
Broom-finish patio: $3,000–$7,000. Stamped or exposed aggregate: $5,000–$12,000. King County labor rates are higher than national averages. Drainage planning and base prep for Pacific Northwest conditions are included. Free estimates: call (425) 650-9677. Free estimates: call (425) 650-9677.
How often does a concrete patio need sealing in Redmond's climate?
More frequently than in dry climates. Pacific Northwest moisture, tree canopy debris, and UV in the summer accelerate sealer wear. Broom-finish patios typically need resealing every 3–4 years. Exposed aggregate and stamped patios need resealing every 2–3 years. Kevin walks through the maintenance schedule at completion of every Redmond patio job.