Protect Your Interlock Investment
Interlock pavers give Windsor-Essex homeowners the versatility to create stunning driveways, patios, and walkways in a range of styles, from rustic old-world charm to sleek, contemporary designs. But without proper protection, Ontario's harsh freeze-thaw cycles, UV exposure, road salt, and heavy rain will degrade even the best-laid pavers over time.
Interlock sealing is the most effective way to protect that investment. A professional seal coat locks in colour, blocks damaging elements, and extends the life of your pavers for years, all at a fraction of the cost of replacement.
At Preferred Coating Solutions, Joe Watling and his team have spent over 15 years perfecting the interlock sealing process. We combine proper surface preparation, premium polymeric sand, and high-quality sealers to deliver results that last.
Our Sealing Process
Every interlock sealing job follows a proven three-step process. Cutting corners on preparation leads to sealer failure, and we don't cut corners.
Power Wash
Weeds, debris, dirt, and old binding agents are thoroughly removed using our Whirl-Away power washing technology. This creates a clean surface for the sealer to properly bond.
Polymeric Sand
Fresh polymeric sand is swept into paver joints and activated with water. This hardens to lock pavers together, preventing weed growth and joint erosion.
Sealer Application
Your choice of solvent-based or water-based sealer is applied evenly across the surface, locking in colour and creating a protective barrier against the elements.

Before and after interlock sealing: colour restored, joints re-sanded, surface protected.
Solvent-Based vs Water-Based Sealers
Choosing the right sealer depends on your pavers, your aesthetic preferences, and the level of protection you need. Here's a breakdown of both options:
Solvent-Based Sealers
- Deeper penetration into paver surface
- Rich, glossy “wet look” finish
- Enhanced colour intensification
- Superior UV and weather resistance
- Ideal for driveways and high-traffic areas
Water-Based Sealers
- Natural, matte appearance
- Lower VOC content
- Faster drying time
- Excellent breathability for the surface
- Great for patios and pool decks
During your free on-site assessment, Joe will evaluate your pavers, discuss your goals, and recommend the best sealer type for your specific situation. Joe provides honest, expert guidance based on your needs.
Benefits of Interlock Sealing
A professional interlock seal coat provides lasting protection against the elements that Windsor-Essex homes face year-round:
- Increased longevity. Sealing adds years of life to your interlock surfaces by shielding against freeze-thaw damage, salt, and chemical exposure.
- Prevents cracking and chipping. A sealed surface resists the expansion and contraction that causes paver degradation.
- Colour restoration and enhancement. Bring faded pavers back to life with rich, vibrant colour or add a glossy finish.
- Weed and ant prevention. Polymeric sanding combined with sealing blocks weed growth and insect activity in joints.
- UV and weather protection. Blocks harmful ultraviolet rays, rain, snow, and road salt from penetrating the surface.
- Enhanced curb appeal. A sealed driveway or patio instantly elevates the look of your entire property.
- Easier maintenance. Sealed surfaces resist staining from oil, grease, and other spills, making cleanup simple.
Surfaces We Seal
Our interlock sealing services cover every type of paver surface around your home:
- Interlock driveways
- Paver patios and courtyards
- Walkways and garden paths
- Pool decks and surrounds
- Front entryways and porches
- Retaining walls and borders
Whether your pavers are brand new or years old, sealing protects and enhances their appearance. Need repairs first? Our interlock repair team can lift, re-level, and restore damaged areas before sealing.
Why Windsor-Essex Homeowners Choose Preferred
- 15+ years of hands-on experience in interlock sealing, paver restoration, and surface protection.
- Direct owner access. You deal directly with Joe Watling on every project.
- Premium products and technique. We use professional-grade sealers and polymeric sand for results that last.
- Educational approach. We focus on educating you so you can make the best-informed decision for your home.
- Small and dedicated by design. A tight-knit team focused on consistent quality.
Complete Surface Protection
Interlock sealing is just one part of keeping your outdoor surfaces in top condition. Explore our other services to protect every surface around your home:
- Interlock Repair: lift and re-level sunken or shifted pavers before sealing.
- Concrete Sealing: protect stamped, exposed aggregate, and coloured concrete surfaces.
- Power Washing: standalone surface cleaning for driveways, patios, and walkways.
Frequently Asked Questions
How much does interlock sealing cost in Ontario?
Interlock sealing costs vary based on the size of the area, condition of the pavers, and the type of sealer selected (solvent-based or water-based). We provide free on-site assessments with fully detailed quotes. Contact Joe directly at 519-995-1667 for a complimentary estimate.
What is the difference between solvent-based and water-based sealers?
Solvent-based sealers penetrate deeper into the paver surface, providing a rich, glossy wet-look finish with enhanced colour. Water-based sealers offer a more natural, matte appearance and are lower in VOCs. Both protect against UV damage, freeze-thaw cycles, and weed growth. During your assessment, Joe will recommend the best option for your specific pavers and desired look.
What does polymeric sand do for interlock pavers?
Polymeric sand fills the joints between pavers and hardens when activated with water, creating a strong bond that locks pavers in place. It prevents weed growth, ant infestations, and erosion from rain. Polymeric sanding is a critical step in our sealing process. We always apply fresh polymeric sand before sealing for long-lasting results.
How often should interlock be re-sealed?
Most interlock surfaces benefit from re-sealing every 3 to 5 years, depending on sun exposure, traffic, and weather conditions. Windsor-Essex homes face harsh freeze-thaw cycles and salt exposure, which can accelerate wear. We'll assess your pavers and recommend the ideal maintenance schedule during your free assessment.
When is the best time of year to seal interlock in Windsor?
The ideal time to seal interlock in Windsor-Essex is between late spring and early fall, when temperatures are consistently above 10°C and no rain is expected for 24–48 hours. This allows the sealer to cure properly and bond to the surface. Book early in the season to secure your preferred date.
Ready to Protect Your Investment?
Talk directly to Joe for a free, no-obligation assessment.
