When it comes to block paving, the small details can make a big difference to both appearance and longevity. One of the most important elements of any block paving driveway or patio is the sand placed between the joints. While it may seem minor, jointing sand plays a vital role in keeping your paving stable, durable, and looking its best.
Whether you’re installing a new block paved driveway or maintaining existing paving, understanding why sand matters can help you avoid common issues such as movement, weeds and water damage.
Why is sand used between block paving?
The sand used between block paving blocks is known as jointing sand or kiln-dried sand. It is brushed into the joints after installation to fill the small gaps between each block.
This sand helps lock the blocks together, preventing movement when vehicles or foot traffic apply pressure to the surface. Without sand in the joints, the blocks are more likely to shift over time, leading to uneven surfaces and potential damage.
Jointing sand also helps distribute weight evenly across the block paved area, contributing to the overall strength and stability of the installation.
How to stop sand washing out of a block paved drive
Over time, some jointing sand may naturally wash away due to heavy rainfall, pressure washing or general wear and tear. If too much sand is lost, the block paving can become unstable.
One of the best ways to reduce sand loss is by applying a quality block paving sealant. Sealants help bind the sand in place while also protecting the surface from moisture, stains and fading.
It’s also important to avoid aggressive pressure washing, particularly at close range, as this can remove large amounts of jointing sand very quickly. If you do clean your block paving with a pressure washer, it’s a good idea to reapply kiln-dried sand afterwards to refill the joints.
Regular maintenance checks can help identify areas where sand levels have dropped before larger issues develop.
Does sand in block paving help prevent weeds?
Yes, sand can help reduce weed growth between block paving, although it does not make the surface completely weed-proof.
When joints are properly filled with kiln-dried sand, there is less space for weeds to establish themselves. The compacted sand creates a tighter barrier between the blocks, making it more difficult for seeds to settle and grow.
However, weeds can still appear over time, particularly if debris, dirt or organic matter collects on the surface. Regular sweeping and maintenance can help minimise this issue.
Some homeowners also choose to apply sealants, which can provide additional protection against weeds and moss growth.
Sanding your block paved driveway or patio
Sand is an essential part of any block paving driveway or patio. It helps keep the blocks secure, improves durability and can even reduce the likelihood of weeds developing between joints.
Maintaining the sand levels in your block paving is a simple but important part of keeping your driveway or patio looking its best for years to come. At Premier Surfacing, we provide expert block paving installation and maintenance services designed to deliver long lasting, high quality results. We’re an experienced surfacing specialist experienced in installing block paved driveways and patios across Market Drayton, Shropshire, Staffordshire, and Cheshire.