Posted on

how to stop weeds growing in block paving

How to stop weeds growing in block paving

Spray a chemical herbicide on persistent weeds that regrow. Direct the chemicals to the weeds on a calm day so the herbicide doesn’t blow to other nearby plants. Organic herbicides offer an option with fewer harsh chemicals for less potential environmental impact.

Fill the joints between the block paving with polymeric sand, a special sand product that turns into a solid that still allows flexibility once it is misted with water. The solid joints won’t allow weeds to grow up in the cracks.

Block paving offers an affordable way to create pathways or patios in your landscaping, but the individual blocks provide an opportunity for weeds to squeeze in through the cracks. Not only do the weeds look unattractive, they could cause shifting or damage to the pavers. Stopping weeds in paver areas starts with the installation of the walkway or patio. Continued maintenance to control weeds as soon as they appear prevents the unwanted greenery from taking over your block pavers.

Remove any existing weeds before installing the block paving. Dig up the roots using a spade or garden trowel. Move the weeds away from the area so they can’t grow again.

Pull any weeds that grow up through the block paving by hand. A putty knife or special weeding knife helps reach weeds that are in the cracks. Remove as much of the weed and root system as possible and dispose of them so they don’t take root again.

Use drip irrigation or a soaker hose to water nearby plants. This keeps the water near the plants you want to keep and away from potential weeds in the block paving. Without adequate water, the weeds are less likely to grow.

Place landscape fabric underneath the pavers. Cut the fabric to size with scissors and hold it in place with U-shaped pins. Layer the sand bed over the fabric and install the block paving as you normally would.

Based in the Midwest, Shelley Frost has been writing parenting and education articles since 2007. Her experience comes from teaching, tutoring and managing educational after school programs. Frost worked in insurance and software testing before becoming a writer. She holds a Bachelor of Arts in elementary education with a reading endorsement.

How to stop weeds growing in block paving

In terms of cost, you really do get what you pay for. Generally speaking, the more expensive the sealant, the better it will be.

Before you start, make sure to select the right sealant for the specific type of paving you have – concrete or clay. There are a wide range of sealants available and you would be best advised to select one that is specifically suited to your type of paving, to minimise issues from arising.

Choosing the Right Sealant

Despite their name, all-purpose sealants are actually largely ineffective, offering a one-size fits all approach, as opposed to more targeted tackling of weed growth. Select the sealant that will give you the effect you are looking for: matt, wet look, damp look, low sheen or neutral.

Preparing the Area

Before starting, ensure the block paving is dry and clean. If possible, leave it a few days between cleaning and sealing. This will enable you to check that the cleaning has not produced any efflorescence (crystalline deposits) on the blocks.

How to stop weeds growing in block paving

Not only does it prevent weeds from growing through your patio gaps it also protects the colour of your paving slabs and blocks out any harmful UV rays.

If you are unsure, then always do a small test patch on some loose tiles or small, inconspicuous area before starting with the application.

The idea is to get rid of as much excess weeds as possible, and also any additional debris. There may also be previous sand between any gaps, and it is also recommended to get rid of this to provide a completely clean surface area.

Is it necessary to seal block paving?

Modern patio sealers offer many different looks and finishes, and at Universeal we offer formulations for all types of paving, including:

Don’t worry if you’ve missed any small weeds out, as in the next step of pressure washing, this will cause enough pressure to lift them up.

Which block paving sealant is best for stopping weeds growing through patio gaps?

If you follow our 4 steps listed above, you will be much more likely to get a professional end result and enjoy a longer lifespan of the protective seal.

Whilst we have an FAQ section and a helpful expert guide on our website, we thought it would be a good idea to cover some of the most important pointers for professional patio sealing in the quick responses below.