Weeds between paving Help

Anti-Chris said:
Roundup - Expensive
Hydrocloric Acid (pool acid) - Relatively cheap but hazardous to work with
Swimming pool salt/ Coarse salt - Relatively cheap and effective option.
So I would go for the coarse salt option. Cheap and effective, but you will probably have to do it annually/ biannually to be sure.
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And another to add to the list --- vinegar (white spirit vinegar) also kills growth in paving. I use a 3:1 mix, but in bad places 1:1 and even neat (water: vinegar).

Then wait a while, clear out the old broken grout and try and fill the cracks with better "stuff".

Clearall is another poison, but watch it -- it kills everything. And don't spray when the wind blows either.
 
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Geoff.D said:
And another to add to the list --- vinegar (white spirit vinegar also kills growth in paving. I use a 3:1 mix, but in bad places 1:1 and even neat (water: vinegar).

Then wait a while, clear out the old broken grout and try and fill the cracks with better "stuff".

Clearall is another poison, but watch it -- it kills everything. And don't spray when the wind blows either.
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Well vinegar would also kill everything.
 
backstreetboy said:
Lol the planet has been around for 4 billion + years. A little roundup is not going to make a dent in anything.
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I agree, that's why I use it myself, but I take extra precautions. And if I use labour, I make sure that they get a crash course in the safe use of harmful chemicals and have masks, goggles, gloves, long trourers and shirts and closed shoes, and I chase anyone offsite that I find that doesn't. I don't need a MSM-fuelled claim five years down the line that this "umlungu" is responsible for someone's erectile dysfunction, or kids with 3 eyes.
 
Lupus said:
Same country where a lady sued Mcd for hot coffee
www.reuters.com

U.S. EPA reaffirms that glyphosate does not cause cancer

The U.S. Environmental Protection Agency said on Thursday it finished a regulatory review that found glyphosate, the most widely used weed killer in the United States, is not a carcinogen.
www.reuters.com www.reuters.com
www.acsh.org

Glyphosate Doesn't Cause Cancer: New EU Report Confirms What We Already Knew

A new report out of the European Union confirms what scientists have known for decades: the weed killer glyphosate poses minimal risk to human health and the environment.
www.acsh.org www.acsh.org

One study showed it did but it was flawed

Facts and Fallacies in the Debate on Glyphosate Toxicity - PMC

The safety profile of the herbicide glyphosate and its commercial formulations is controversial. Reviews have been published by individuals who are consultants and employees of companies commercializing glyphosate-based herbicides in support of ...
www.ncbi.nlm.nih.gov www.ncbi.nlm.nih.gov
"We found that these authors inappropriately employ a deductive reasoning approach based on syllogism. We found that their conclusions are not supported by the available scientific evidence. Thus, the mechanisms and vast range of conditions proposed to result from glyphosate toxicity presented by Samsel and Seneff in their commentaries are at best unsubstantiated theories, speculations, or simply incorrect."
So of course places like Mercola, green news jumped on this study and politicians do what they do best and not follow the science and go with what the 'public' wants.
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If that were true it would have definitely saved Monsanto Bayer a few bob.
 
Geoff.D said:
And another to add to the list --- vinegar (white spirit vinegar) also kills growth in paving. I use a 3:1 mix, but in bad places 1:1 and even neat (water: vinegar).

Then wait a while, clear out the old broken grout and try and fill the cracks with better "stuff".

Clearall is another poison, but watch it -- it kills everything. And don't spray when the wind blows either.
Click to expand...
Clearall = Glysophate, the active ingredient in the non-discriminatory weed killer Roundup.
 
Never tried - but asking.

One of the things we learnt about composites in the building / Textile industry is that normal gypsum /lime based cements are quite brittle. But adding something to the mix makes a huge difference, things like cotton fiber or propylene or polyester.
There is a whole chemistry of the alkalinity of cement from the lime and the resistance of alkalinity with the fibers - but - I am wondering if the pavers were grouted a fiber reinforced cement grout - if that would help?

Possibly spray a caustic soda solution first to kill off the weeds, then grout?
The reason for suggesting caustic is that acetic acid - vinegar - can be quite corrosive to cements.

Dunno, just a thought.
 
shadow_man said:
Yep, nope it's clearly not had a huge class action against it because it does exactly this, nor has it been banned in over 20 countries - nothing to see here, it's harmless folks. :X3::unsure::whistling:
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You know scare-mongering? You know how media goes after things and how politicians react? Yeah this is one of them, over-reaction by politicians to placate some moaners. Have you not seen the current generation of people popping up? Whiny little turds about everything, same reason why solar and wind got massive pushes and incentives in countries, not because they are actually the better option, but because the loudest kept screaming.
As stated on completely discredited study showed it did, but people hopped on it as they always do, so they filed class action suits and being the US it's sometimes easier to just pay them out then to keep fighting.
 
TEXTILE GUY said:
Never tried - but asking.

One of the things we learnt about composites in the building / Textile industry is that normal gypsum /lime based cements are quite brittle. But adding something to the mix makes a huge difference, things like cotton fiber or propylene or polyester.
There is a whole chemistry of the alkalinity of cement from the lime and the resistance of alkalinity with the fibers - but - I am wondering if the pavers were grouted a fiber reinforced cement grout - if that would help?

Possibly spray a caustic soda solution first to kill off the weeds, then grout?
The reason for suggesting caustic is that acetic acid - vinegar - can be quite corrosive to cements.

Dunno, just a thought.
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Yup now imagine the hydrochloric acid some are advocating on here? That would destroy the bricks and any existing grout.
 
Lupus said:
Yup now imagine the hydrochloric acid some are advocating on here? That would destroy the bricks and any existing grout.
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Use sulphuric acid, far cheaper than hydrochloric acid. And it can be neutralised a day later with a followup spray of Sodium Hypochlorite (normal household bleach).
 
RonSwanson said:
Use sulphuric acid, far cheaper than hydrochloric acid. And it can be neutralised a day later with a followup spray of Sodium Hypochlorite (normal household bleach).
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Faaar cheaper, throw up on the weeds :-) make sure you've not eaten for about 8 hours, free sulphuric acid
 
Lupus said:
You know scare-mongering? You know how media goes after things and how politicians react? Yeah this is one of them, over-reaction by politicians to placate some moaners. Have you not seen the current generation of people popping up? Whiny little turds about everything, same reason why solar and wind got massive pushes and incentives in countries, not because they are actually the better option, but because the loudest kept screaming.
As stated on completely discredited study showed it did, but people hopped on it as they always do, so they filed class action suits and being the US it's sometimes easier to just pay them out then to keep fighting.
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You know you're literally defending the company who was found guilty of numerous Nazi war crimes? They've got a long history of doing whatever the hell they want for profit. These are not nice people - there is no "shame the media is bullying them" here.

What next - your uncle Jeffrey Dahmer is the nicest man and didn't do anything to those boys? :X3:
 
shadow_man said:
You know you're literally defending the company who was found guilty of numerous Nazi war crimes? They've got a long history of doing whatever the hell they want for profit. These are not nice people - there is no "shame the media is bullying them" here.

What next - your uncle Jeffrey Dahmer is the nicest man and didn't do anything to those boys? :X3:
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So you don't drive in BMWs, Merc, VW/Audis, drink fanta? Have a bratwurst? Also Bayers bought Monsanto which was the original manufacturer.
 
Lupus said:
So you don't drive in BMWs, Merc, VW/Audis, drink fanta? Have a bratwurst? Also Bayers bought Monsanto which was the original manufacturer.
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Nope, nope and nope - maybe a bratwurst now and then - but a bratwurst never forced people to build concentration camps or helped with mass exterminations.

Say hi to uncle Jeffrey for us, at your next anti vac tinfoil hat Covid rally - the media is out to get us! :X3:;):ROFL:
 
shadow_man said:
You know you're literally defending the company who was found guilty of numerous Nazi war crimes? They've got a long history of doing whatever the hell they want for profit. These are not nice people - there is no "shame the media is bullying them" here.

What next - your uncle Jeffrey Dahmer is the nicest man and didn't do anything to those boys? :X3:
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So we should blame the ancient Mesopotamian for inventing the wheel as Henry Ford used it on his cars and now we have idiots driving on the roads ?
 
HunterNW said:
So we should blame the ancient Mesopotamian for inventing the wheel as Henry Ford used it on his cars and now we have idiots driving on the roads ?
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Not quite the same thing when you're deflecting from two completely different entities - let alone thousands of years ;)

This SAME company was complicit in a huge number of war crimes (not even a century ago) - you can't then tell me that the media is after them and they're just "good guys" and it's all made up.

Where there's smoke - there's fire.
 
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