How to stop sand washing out of block paving

Question

After every heavy rain some of the jointing sand in our block paving washes away and leaves gaps. Is there a more permanent solution than topping it up each time?

Patrick · Answer

I would recommend a hydrochloride brushing leave for about 45 minutes and rinse off low pressure power cleaner hose pipe

David · Answer

Hi Greg resand your block paving and use a block paving sealant.That will solve the washout problem.

George · Answer

Hi Greg am afraid there’s no other way other than resand and put a sealer over the drive any other product will stain the blocks , hope this helps . Kind regards …. George

Cam · Answer

There’s not really anyway to really stop it,it all depends on how it has been laid as it shouldn’t be coming straight out,plus some quality of kilnsand is more fine than other so will come out

Tom · Answer

If you seal the paving with block paving sealer it will harden the sand between the joints

Danny · Answer

You can get a block paving sand that actually hardens so won’t wash out

Dean · Answer

Hi. You could mix cement with the sand and repaint the areas. Also, when completely dry, seal the driveway with an epoxy resin sealant. That would harden aswell. Thank you.
Dean.
J Ketley Construction Ltd

Carl · Answer

Yes you can seal the driveway, only negative of that, is the fact the rain water will not go through the joints and will run away in the direction the drive is graded to.

Personally I would just keep re-sanding.

Steven · Answer

There are several durable alternatives to regular kiln-dried sand that resist rain erosion. Upgrading to a stabilized jointing sand or applying a sealant locks the blocks together, prevents weed growth, and saves you from constantly sweeping new sand into the gaps. [1, 2, 3, 4]

How to stop sand washing out of block paving

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