You just pressure washed your concrete patio and it looks brand new. Now what? If you skip sealing, you'll be back in the same spot in 6-12 months. Sealing after a pressure wash is the step that makes the clean last -- and it's one of the best upsell opportunities in the industry.

The Quick Answer

Concrete patio sealing costs $1.35 to $2.50 per square foot installed in 2026. Here's what that looks like by patio size:

Small patio (100 sq ft): $135-$250
Average patio (200 sq ft): $250-$600
Large patio (400+ sq ft): $500-$1,500+

Reseal every 3-5 years for acrylic sealers, every 5-10 years for penetrating sealers. The rule: always seal after pressure washing, never before.

Why You Should Seal After Pressure Washing

Pressure washing opens up concrete's pores. That's what makes it look so clean -- you're stripping away the layer of grime that has been sitting on the surface and blocking those pores. But open pores absorb water, oil, and stains faster than sealed concrete does.

Sealing after washing locks those pores shut. The result:

Stains bead off instead of soaking in
Freeze-thaw damage is dramatically reduced because water can't penetrate the surface
The patio stays cleaner longer, making your next wash faster and easier
Sealed concrete lasts 25-30 years vs. 10-15 years for unsealed

Wait at least 24-48 hours after pressure washing before applying sealer. The concrete must be completely dry -- sealed moisture under the coating causes peeling and bubbling.

Sealer Types: Which One Is Right for Your Patio

Acrylic Sealer

The most affordable option. Materials cost $0.10-$0.25/sq ft. Lasts 1-3 years and then needs reapplication. Works well for patios that get light foot traffic and aren't exposed to heavy staining or harsh winters. Available in gloss or matte finish.

Polyurethane Sealer

The best middle-ground option for most homeowners. Materials cost $0.25-$0.50/sq ft. Lasts 3-5 years. Harder than acrylic, resists chemicals and UV better. Good choice for patios that see regular use or are in high-sun areas.

Penetrating Sealer (Silane-Siloxane)

The longest-lasting option. Materials cost $0.30-$0.75/sq ft. Lasts 5-10 years. Soaks into the concrete rather than sitting on top, so it doesn't change the look or texture. Best for patios in harsh freeze-thaw climates or stamped concrete where you want to preserve the texture.

Epoxy Sealer

The most durable option but also the most expensive. Better suited for garage floors and high-traffic commercial areas. For an outdoor patio, polyurethane typically makes more sense due to better UV stability.

How Contractors Can Upsell Sealing

Most customers don't think to ask about sealing. You have to bring it up. The pitch is simple: "While I'm here, I can seal the patio for $X and it'll stay this clean for the next 3-5 years."

The math works for both sides:

You add $150-$500 to a job that's already at your location -- zero extra drive time
The customer pays once now and doesn't need to call you again for years
Sealing margins are better than washing because labor is minimal once you're already set up

A 200 sq ft patio at $1.75/sq ft comes to $350 added to the job ticket. With roughly $50 in materials, that's $300 in gross profit for 30-45 minutes of work.

The Right Process: Wash, Wait, Seal

The steps are simple but the timing matters:

Pressure wash at 2,500-3,000 PSI with a surface cleaner. Remove all algae, mold, and embedded dirt.
Wait 24-48 hours for the concrete to fully dry. In high-humidity conditions, wait the full 48 hours. Check with a moisture meter or tape test if you're unsure.
Apply sealer with a roller or airless sprayer in thin, even coats. Two coats is standard for topical sealers -- let the first coat dry before applying the second.
Cure time: Keep foot traffic off for 4-8 hours, vehicle traffic off for 24-72 hours.

How Often to Reseal

A simple test tells you when it's time: pour a small amount of water on the surface. If it beads up and rolls off, the sealer is still working. If it soaks in, it's time to reseal. Most patios need resealing every 2-5 years depending on traffic, sun exposure, and sealer type.

Bottom Line

Sealing concrete after pressure washing extends the life of the surface and keeps it cleaner longer between washes. For homeowners, it's one of the best-value maintenance steps you can take. For contractors, it's a high-margin upsell that adds $200-$500 to jobs with minimal extra time on-site.

If you want to start offering instant sealing quotes on your website, try QuoteSnap for free. Set up your pricing once and let customers get estimates 24/7 without calling.

Why Seal Your Concrete Patio After Pressure Washing: 2026 Protection & Cost Guide