Best Way To Prevent Weeds From Growing In Interlock Patios and Driveways

Michael Nardi

Jul 8

3 min read

Weeds growing between interlock stones are one of the most common (and frustrating) problems homeowners face. Not only do they ruin the look of your patio or driveway, but they can also cause long-term damage by shifting pavers and trapping moisture.

If you’re looking for a long-lasting solution—not just a temporary fix—the key is proper cleaning and joint stabilization using professional equipment and materials.

Why Weeds Grow in Interlock

Weeds don’t just appear randomly. They grow when organic debris like dirt, dust, and pollen settles between your pavers and creates a perfect environment for seeds to take root.

Common causes include:

Old, degraded joint sand

Built-up dirt and organic material

Poor drainage or moisture retention

Lack of regular maintenance

Once weeds establish themselves, simply pulling them out or spraying them is only a short-term fix.

The Most Effective Way to Remove and Prevent Weeds

The best long-term solution is a full interlock restoration process that includes deep cleaning and re-sanding with polymeric sand.

Here’s how it works:

1. Professional Pressure Washing

A high-powered pressure wash removes:

Weeds and roots

Built-up dirt and grime

Moss, algae, and organic material

More importantly, it clears out the joints between stones, which is critical for long-term prevention and application of new polymeric sand.

2. Joint Sand Removal

During pressure washing, all old and contaminated sand is flushed out from between the pavers. This step is essential because old sand often contains the organic material that allows weeds to regrow.

3. Installation of Polymeric Sand

Once the surface is clean and dry, new high-quality polymeric sand is installed.

Polymeric sand:

Hardens when activated with water

Helps to lock pavers in place

Prevents weed growth

Deters ants and insects

Reduces water erosion between joints

This creates a solid, stabilized surface that significantly reduces the chance of weeds coming back.

Why DIY Patio Weed Removal Methods Don’t Last

Many homeowners try:

Pulling weeds by hand

Applying vinegar or store-bought weed killers

Sweeping in regular sand

While these methods may work temporarily, they don’t address the root cause—contaminated joint material and improper sealing.

Without removing debris and installing polymeric sand, weeds will return within weeks or months.

Why Choose Wash Doctors Pressure Washing for Interlock Weed Removal

At Wash Doctors Pressure Washing, we specialize in interlock cleaning and restoration across York Region. Our process is designed to deliver long-lasting results—not quick fixes.

What sets us apart:

Commercial-grade pressure washing equipment

Proper joint cleaning and preparation

Premium polymeric sand installation

Experience with driveways, patios, and walkways

Wash Doctors Pressure Washing provides patio weed removal and polymeric sand application services across York Region including Newmarket, Aurora, Richmond Hill, and surrounding areas

We don’t just clean your interlock—we restore it and protect it.

When Should You Hire Wash Doctors Pressure Washing to Remove Interlock Weeds

The best time to restore your interlock is:

Spring: Remove winter buildup and prepare for the season

Summer: Ideal conditions for polymeric sand installation

Early fall: Prevent weed growth before winter

If you’re already seeing weeds, it’s a sign that your joint sand has failed and it’s time for a full restoration.

Final Thoughts

If you want a clean, weed-free patio or driveway that lasts, the solution isn’t just removing weeds—it’s properly maintaining your interlock paver joints.

Professional pressure washing combined with polymeric sand installation is the most effective way to prevent weeds from coming back and to protect your interlock investment for years to come.

If you're in York Region and want your interlock restored the right way, Wash Doctors Pressure Washing is ready to help.