Patio Paving best filler anti weed

[Stanley Chow]

I have had my recent patio done in Oct 2018 and and Indian stone paved. However I note there are weeds growing on the edges where there are gaps unfortunately. Gaps are are about 3mm+


Photo for reference
https://imgur.com/XhuHEnP

My plan i as follows:

1: Weed killer to kill roots as well
2: Pull out weeds
3; Use of joint filler sand

I am planning to use:
https://www.everbuild.co.uk/product/sika-setting-sand/

Which joint filler sand do you all find is better?, I chose above due to reviews on Amazon

What other tools do I need apart from a brush to brush it in?

I am almost tempted to put Weather grade grey silicone to fill the sides in, the paving is also grey colored and easier to do. But obviously wouldn't look good in between paving further in.

https://www.travisperkins.co.uk/Dow-Corning-791-Silicone-Waterseal-Sealant-Grey-310ml/p/523644


Your experienced thoughts would be great, thanks

 

[JohnD]

if you use a modern weedkiler it will kill the roots, so you don't need to pull them up. Disturbing the soil encourages more weed seeds to grow. Wait until the folliage has yellowed and died. You can then cut the stems off at ground level.

If you use "Pathclear" it leaves a film on the surface that prevents seeds germinating. But if you hoe, rake or pull up weeds or disturb the soil it will no longer work.

 

[Stanley Chow]

what's the best filler to use ?