Paver Cleaning & Sealing in St. Louis
Restore the original color and beauty of your paver patio, driveway, or walkway with professional cleaning and sealing from an authorized Unilock contractor. We eliminate weeds, moss, and stains while adding a protective layer that keeps pavers looking their best.
Why Your Pavers Need Cleaning and Sealing
Even the best-installed paver patio will start to show its age after a few years without maintenance. St. Louis's combination of humidity, heavy rainfall, freeze-thaw cycles, and intense summer sun takes a toll on any outdoor surface. Joints lose sand, weeds and moss creep in, and the original color begins to fade under layers of dirt and organic growth.
Professional paver cleaning and sealing addresses all of these issues in a single service. We remove built-up grime, algae, and stains, replenish the polymeric sand in the joints, and apply a high-quality sealant that protects the surface from UV fading, water penetration, and weed growth. The result is pavers that look like they were installed yesterday.
As an authorized Unilock contractor, we understand the specific care requirements for different paver products. We use cleaning agents and sealants that are compatible with Unilock's EnduraColor Plus technology and other premium paver surfaces, so you never have to worry about damage from the wrong product.
How We Clean and Seal Pavers
Our cleaning and sealing process restores your pavers to like-new condition and provides lasting protection.
Inspection & Assessment
We examine the current condition of your pavers, including joint integrity, staining, efflorescence, weed growth, and any settling or drainage issues. This assessment determines the cleaning method, products, and sealant type that will work best for your specific installation.
Weed & Moss Removal
We remove all organic growth from the joints and paver surfaces. This includes pulling weeds, scraping moss, and treating the area with an eco-friendly herbicide that prevents regrowth. Skipping this step means weeds return within weeks, which is why we address it before cleaning.
Deep Cleaning
We use a combination of specialized cleaning solutions and controlled-pressure washing to remove dirt, oil stains, algae, mold, and efflorescence without damaging the paver surface. The pressure and technique are adjusted based on the paver type. Aggressive pressure washing can erode the paver face, which is why this step requires experience and the right equipment.
Joint Re-Sanding
Once clean and dry, we refill the joints with fresh polymeric sand. Polymeric sand hardens when activated with water, creating a solid barrier that prevents weed growth, insect infiltration, and sand erosion from rain. Properly filled joints also stabilize the pavers and prevent shifting.
Sealant Application
We apply a professional-grade sealant that enhances the paver color (wet look or natural finish, your choice) and creates a protective barrier against UV rays, water absorption, oil stains, and organic growth. The sealant penetrates the paver surface rather than just sitting on top, providing 3 to 5 years of protection before reapplication is needed.
What Cleaning and Sealing Does for Your Pavers
Restores Original Color
Years of dirt, grime, and UV exposure make pavers look dull and faded. Our deep cleaning process removes everything that is dulling the surface, and the sealant enhances the natural color so your pavers look as vibrant as the day they were installed.
Prevents Weed Growth
The combination of fresh polymeric sand and a quality sealant creates a barrier that weeds cannot penetrate. Instead of constantly pulling weeds from your patio joints, you get years of weed-free enjoyment.
Protects Against Stains
Sealed pavers resist oil, grease, wine, and food stains that would normally soak into the surface. Spills wipe up easily instead of becoming permanent marks, which is especially valuable for outdoor kitchens and dining areas.
Extends Paver Lifespan
Water that penetrates paver surfaces freezes and expands in winter, causing spalling and surface damage over time. Sealant prevents water absorption, protecting your pavers from the freeze-thaw damage that is common during St. Louis winters.
Stabilizes Joints
Polymeric sand replacement keeps the joints solid, which prevents pavers from shifting, rocking, or developing uneven surfaces. Stable joints also keep ants and other insects from tunneling underneath and displacing the bedding material.
Increases Property Value
Well-maintained hardscaping adds to your home's curb appeal and market value. A clean, sealed patio or driveway makes a strong first impression on visitors and potential buyers. It shows that the property has been properly cared for.
Keep Your Outdoor Space Looking Its Best
Ready to Restore Your Pavers?
Get a free estimate for paver cleaning and sealing. We serve St. Louis, Jefferson County, and St. Charles County.
Paver Cleaning & Sealing FAQ
Most paver surfaces in St. Louis benefit from cleaning and sealing every 3 to 5 years, depending on exposure and traffic. High-use areas like driveways and outdoor kitchens may need service closer to every 3 years, while a patio under a covered structure might go 5 years between treatments. We assess your specific situation during the free estimate.
Pricing depends on the total area, current condition, and type of sealant selected. Most residential paver cleaning and sealing projects in the St. Louis area range from $1.50 to $4.00 per square foot. Severely neglected surfaces that require extensive weed removal and stain treatment may be on the higher end. We provide exact pricing during the free on-site estimate.
Late spring through early fall is the ideal window for paver sealing in St. Louis. Temperatures need to be consistently above 50 degrees for the sealant to cure properly, and the surface needs to be dry. We typically schedule sealing projects between April and October, avoiding days with rain in the forecast.