Why Do Weeds Keep Growing in My Block Paving? (The Secret to Stopping Them)

Jan 11
2 min read

Close-up of weeds and moss growing in block paving driveway joints in Leicester.

You spend your Sunday afternoon pulling weeds out of your driveway. It looks great for a week. Then, after one rain shower, they are back—green, stubborn, and ruining the look of your home.

It is the most common frustration we hear from homeowners in Leicester and Northampton.

Most people think the solution is more weed killer or a stronger pressure washer. But actually, blasting your driveway might be making the problem worse. Here is why weeds keep coming back and the professional 3-step process we use at Eazi Cleaning Solutions to stop them.

The Real Problem: It’s All About the Sand

Block paving isn't a solid sheet of concrete; it is thousands of individual bricks held together by friction and kiln-dried sand.

Over time, wind and rain erode this sand. When you use a high-pressure washer (DIY style), you often blast this vital sand out of the joints.

This leaves a deep, dark gap between the bricks. Dirt and seeds blow into this gap, creating a perfect damp plant pot for weeds to thrive. If you don't replace the sand, the weeds will return forever.

The Eazi Clean Solution: Clean, Sand, Seal

To truly restore a driveway and keep it weed-free for longer, we follow a strict process that goes beyond a simple "splash and dash."

1. The Deep Clean

We use professional-grade flat surface cleaners to remove the surface grime, moss, and lichen. We also blast out the old, contaminated sand where the weed roots are hiding.

Eazi Cleaning Solutions technician using a professional flat surface cleaner on a block paving driveway.

2. Re-Sanding (The Crucial Step)

Once the driveway is bone dry, we sweep in fresh, sterile Kiln Dried Sand. This fills the joints back up to the top, locking the bricks tight and leaving no room for weed seeds to settle.

3. Sealing (The Barrier)

This is the game-changer. We apply a high-quality acrylic sealant. This creates a protective layer over the sand, hardening it so it won't wash away. It also waterproofs the surface, making it harder for oil stains to stick and for moss to take root.