Moss problems with Block Paving

[ChrisinShropshire]

Two years ago we cleaned out the joints between our block paved drive and filled them with kiln-dried sand.
We are now finding that a few weeds and, more to the point, moss is growing in the sand. Also 'soil' tends to collect in the gaps and this seems fertile. We have tried the regular application of weed killers and moss killer without lasting success.

Would we benefit from

1. cleaning out the joint and not refilling the gaps so that there is nowhere for the moss to grow? The bricks are firmly in place and we are not too worried about them moving.
   
2. cleaning out the joints and refilling with kiln dried sand and then just cleaning the paving with bleach and water regularly?
   
3. Using a special kiln dried sand, such as Geo-fix or Wickes' Dansand no weed?

 

[conny]

You need the dried sand to stabilise the blocks. If they start to rock they will eventually start lifting and give a terrible uneven surface.
Not good for the appearance and not good from a trip/slip hazard view, especially if you have kiddies or older people.

I used to brush the grooves once a month during the summer with a wire brush on the end of a pole. So easy to do. You can get them from B&Q, Homebase etc Look I the gardening section. Cost less than a tenner and well worth it.

Can't advise on what the best sand is sorry.

 

[LeadFarmer]

Clean out the weeds and seal with Resiblock

//www.diynot.com/diy/threads/resiblock-sealant-applied-to-my-block-paved-drive.332712/