Weeds in concrete

retiredbanker1

Try a Kettle of boiling water.

diveunderthebonnet

There are weed burners on the market ,some electric and some use a gas canister.

Ectophile

If you spray with a herbicide such as glyphosate, it will kill those weeds permanently.

It won't stop the next generation of weeds seeding in, though. Weeds will grow almost anywhere.

TurbulentCourage

I had a similar problem last year.- between a gravel board and pathway.

I used Rootblast (from Amazon). It wasn't cheap, but it was effective. Patience and dry weather are required.

If you do give it a go, please be careful - the blurb on it states:

• Non-selective - will kill ANY plant it contacts, including your flowers

Experience taught me they are not being dramatic. Swmbo got some on a chocolate mint plant I was growing. After we returned from a long weekend away it was dead.

newbieni

I should clarify that I'm able to get the weeds out with a trowel, the issue is they return within weeks. This is why I felt pointing my help.

WIAWSNB

https://forums.moneysavingexpert.com/discussion/comment/82077349#Comment_82077349

Seriously, just spray them. As and when you see a new leaf appear, spray it with a, "Well, do you feel lucky…?"

If you 'point', then - yes - it'll greatly reduce the available space for weeds to pop up, but they sure as heck still will. They'll track any remote hairline, and there will be some.

You could try laying a sprinkle of salt into the joint, and repeat every couple of months - good chance that'll do the job too.

Section62

https://forums.moneysavingexpert.com/discussion/comment/82077349#Comment_82077349

The gap is too narrow for pointing to be effective. It will soon crack, either on its own or helped by the weeds. The path looks as though it is some form of bituminous material, so is 'flexible' and will move. It will also look a complete mess if the pointing isn't done with exceptional care, and cleaning mortar off bituminous surfaces when set is nigh on impossible.

If you did anything then sealing the gap with a bituminous sealer might help, but again with lots of potential to end up with an unsightly mess.

victor2

https://forums.moneysavingexpert.com/discussion/comment/82075390#Comment_82075390

^^This^^

Use it on my block paving drive. Kills the weeds, but of course new ones grow again, indicating time to put the kettle on! 😊

FFHillbilly

I think how to kill the weeds has been covered, but unless you want to have to keep doing that forever you need to fill the gap with something. I would mix up some SBR and Cement into a slurry and pour it into the crack, might need some prep first lke wire brushing and hoovering

bjorn_toby_wilde

https://forums.moneysavingexpert.com/discussion/comment/82082923#Comment_82082923

If you do that, be very careful not to get the slurry anywhere other than where you want it. That stuff sticks like the proverbial ordure to a blanket.