How to keep weeds out of cobblelock & brick paving after power / pressure washing?

May 06, 2015

Benz Softwash are suppliers of softwash cleaning chemicals

Cleaning Cobblelock or brick paving

Power or pressure washing will clear out the weeds, so they are gone ... for a short time.

But although the surface looks good when we leave a customer’s property, neither softwashing nor power or pressure washing actually kills the weeds.

The weeds come back all too soon.

And, as well as clearing out the weeds, power or pressure washing washes out the sand between the bricks in a Cobblelock or block paving drive or path. And of course this means re-sanding.

Applying chemical weedkillers requires the person applying them to be trained and licensed in their application, which is a good move for any softwash contractor to consider. But what do you do before getting licensed, or if you just don't want to pour Monsanto's best into our good earth?

Here’s a suggestion on how keep weeds at bay

You’ve completed the clean and are about to re-sand the gaps between the Cobblelock or bricks:

  1. Mix 10% ordinary table salt with 90% sand (salt is a highly effective weedkiller, so be very careful how you use it around plant life).
  2. Brush in and leave under-filled by approximately 5 mm – doing your best to ensure the sand is indented and not flush with the Cobblelock or brick paving.
  3. Leave a gap of a least 5 cm from edges that are adjacent to a lawn or flower/vegetable bed and fill this with unsalted sand. The unsalted sand will prevent salt "leaching" into areas where plant life is growing.
  4. Brush pure sand into the top of the gaps as normal.


Cleaning Cobblelock or brick paving

Important: The photo above shows salt crystallising on the surface when the surface did not receive a top layer of unsalted sand.

Rain will eventually wash this away into adjacent lawns or flower/vegetable beds, which could harm the plant life.

Hence the reason we suggest a final dressing with unsalted sand to prevent this.

IMPORTANT: Please do not even think of brushing surplus sand/salt mix into a nearby lawn, flower or vegetable bed. Brush it up and remove from the site. If salt gets into a lawn, flower bed, vegetable patch it will hurt the plant life and can take several years to wash away, as salt does not biodegrade.

IMPORTANT: Keep salt away from ponds and other aquatic environments. DO NOT APPLY if there is any danger of salt leaching into a fresh water aquatic environment.

This is a simple, inexpensive and effective way to offer that little extra to your customers, which helps get you those precious referrals.

Click here to read more Benz Trade Tips posts and watch how-to videos

We hope this information was helpful,

Ben, Leo
 & Fiona


Click Here to explore the full range of Benz popular softwash cleaning products

Benz Softwash Bio Cleanze DDAC biocide & Benz Softwash Lightning Cleanze SH sodium hypochlorite biocide

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