Block paving / Tarmac gap

[NRG1976]

Hello, that time of year again when weeds are becoming the bane of my life. This year I want to win the war as well as the battle!

So to fix this once and for all, or at least stop the process repeating all through summer, I want to fill the small gap between where the tarmac meets my block paving.

Aside from weed killer, is there some way I can fill this gap without making it an eyesore, to stop weeds coming back ?

Thanks in advance

[Simpo Two]

My only idea is to splurge exterior sealant into it... maybe someone has a better one.

[JoshSm]

Block of bitumen, melt it in something disposable, carefully pour it into the gap?

[dmsims]

JoshSm said:

Block of bitumen, melt it in something disposable, carefully pour it into the gap?

That or use bitument paint

[sherman]

Sodium Hypochlorite should do the job.
https://amzn.eu/d/59xjjSC

[119]

Pour some neat bleach down there for a quick fix

[Steve Campbell]

Kill everything first, wait for a dry few days then brush this in https://www.wickes.co.uk/Dansand-NO-GROW-Block-Pav...

[m3jappa]

Realistically not a lot. It's just the differential movement between the edges and the tarmac. See this all the time on resin drives.

A bodge may be put kiln dried sand down the gap and then use jointing stabiliser to make it go hard which will decrease the area for weeds to root.

Whatever you do will be a bodge iykwim, you just need something that's fine so it fills the gap and then goes hard to stop rooting in.

[NRG1976]

Thanks folks. I’m going to blast the weeds out and then fill the gap with powdered weed killer. Then I will probably drop a little bit of dry cement into the gap, but keeping it below ground level so it doesn’t become unsightly.

[shtu]

Steve Campbell said:

Kill everything first, wait for a dry few days then brush this in https://www.wickes.co.uk/Dansand-NO-GROW-Block-Pav...

This is a good answer - kill the weeds, don't jetwash or pull them out, as they'll just regrow from the fragments.

[NRG1976]

Actually I’ll give that a go first, albeit I’m sceptical about whether that is just snake oil!