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LAGrunthaner Sat Jul 18, 2020 11:55 am

I know the power-washer would be the easiest and I can rent one at the local rental store but I will have trouble with minor cracks becoming major cracks. I've read a bit on cleaning products but would like to know what has worked for anyone here.

Any luck with TSP & a scrub brush?

Muriatic acid & scrub brush?

As you see it is next to the victory garden so I can't kill the plants. Any thoughts? It is a small area and dish soap and brush was barely successful.


Abscate Sat Jul 18, 2020 11:59 am

Go with the power washer , just water, and back off the distance to24 inches. Come in slowly to find the wash and no-damage point.

Zip tie a guide stick to the wand to hold that distance.

calvinater Sat Jul 18, 2020 12:26 pm

TSP

KTPhil Sat Jul 18, 2020 2:20 pm

What are you trying to remove? Oil? Moss? Dirt?

When I had a big oil spill I started with kitty litter, then soaking with kerosene, then a hose with a jet nozzle and laundry soap. Rust stains were handled with muriatic (pool) acid, then baking soda to neutralize it.

my59 Sat Jul 18, 2020 2:40 pm

Clean a concrete walkway and steps? What, you want to see ir get dirty again? You got nothing better to do? Wow.....;-)

Yeah, pressure washer set to 'gentle' cycle.
When we wash buildings, first is water, basic detergent, and natural bristle brushes.
If it needs more, then we add a light duty restoration cleaner, Prosoco.
If it needs more, we move to medium duty, then heavy duty.
You need to capture the run off, allow it to evaporate, dispose of, etc.

Your garden may not be such a victory.

Zundfolge1432 Sat Jul 18, 2020 3:03 pm

Muriatic acid better known as hydrochloric acid is very bad stuff, highly toxic and will etch concrete. The fumes are awful too. Id use a more environmentally friendly product like simple green or one of the citrus cleaners. If unable to use a power washer Id apply the cleaner, scrub with stiff bristle brush and rinse. Maybe lather rinse repeat and it will look great. :D

busdaddy Sat Jul 18, 2020 3:09 pm

Around here there's a product called 30 seconds cleaner, I don't know what's in it although it does smell a little like bleach, it claims to be safe for plants too. The stuff really works, got all the lichen off my brick patio with minimal effort.

https://30secondscleaners.com/collections/products...gJ34fD_BwE

cdennisg Sat Jul 18, 2020 5:41 pm

calvinater wrote: TSP

Yep. Might take a couple of rounds, but it will work without killing the plants.

But, judicious use of a pressure washer would work faster, and probably better.

Abscate Sat Jul 18, 2020 5:45 pm

There is nothing environmentally safe about Simple Green

Butylethoxy ethers and a pretty high pH make it nasty on plants, too.

[email protected] Sat Jul 18, 2020 6:10 pm

I have one of these and love it

https://www.youtube.com/watch?v=pFPEVAWf88M

honestly, just straight up water will get you done if you're removing general smutz.

you'll have to be REAL careful with muriatic acid, it will etch in a bad way. even 1 drop on the surface will destroy it if left too long.

you'll never get the results you hope for without a pressure washer. if anything i'd try some ZEP concrete cleaner and get one of those diesel push broom heads, you know the ones where the brush material is made of wicker :lol:

I've cleaned enough stalls in my life to know what works with minimal effort so my vote is for the pressure washer. if you're worried about blowing chunks out near cracks, get your sea legs in "the field" and practice...you can literally laser along side a crack within 1/16" and cause no damage

cdennisg Sat Jul 18, 2020 6:20 pm

Abscate wrote: There is nothing environmentally safe about Simple Green

Butylethoxy ethers and a pretty high pH make it nasty on plants, too.

Funny you mention that. I like to use it for many things, but you gotta be careful.

Back in the late 80's, a high school buddy of mine was bragging about this stuff called Simple Green that his dad was a new rep for with his distribution bizz. The kid kept bragging about how safe it was, and that it was OK for the environment, even though none of us really cared about that shit at the time.

He even used the phrase "it is safe to drink" a few times. We called bullshit on him, but nobody ever tried it.

I do like using it for cleaning rubber floor mats and such. Leaves a very clean, dull finish.

2type2 Sun Jul 19, 2020 4:29 am

I found 30 Second Cleaner to be useless. Perhaps you have noticed that many of these cleaners are weak dilutions of commonly available things. Do some research on sodium carbonate, sodium percarbonate ,also the 'substitute- fake 'TSP powder. Figure you can make gallons for pennies, as well as mix what strength you desire. There are many chemical possibilities available in cheap bulk .Then use with a stiff scrubbing broom and rinse off. Better yet rinse with water only pressure spray. If you are using a bleach wash somewhere ---def use Jo-max in the mix as it enhances bleach.

grandpa red Sun Jul 19, 2020 7:12 am

LAGrunthaner wrote: I know the power-washer would be the easiest and I can rent one at the local rental store but I will have trouble with minor cracks becoming major cracks. I've read a bit on cleaning products but would like to
If I'm trying to clean up oil spills I just use laundry detergent water and a push broom.

I have used a pressure washer before only for general cleaning to get rid of the black moldy stuff.

If your concerned about the cracks don't aim at them.

mark tucker Sun Jul 19, 2020 10:02 am

there is eco friendly bleach..... I like the dollor trees cleaners, awesome works great as does the mold spray and a few others. but use sparinglyt and rince well real well but you probably just want to sue a steamer neer the garden. some sunshine works too.

raygreenwood Sun Jul 19, 2020 10:12 am

Abscate wrote: There is nothing environmentally safe about Simple Green

Butylethoxy ethers and a pretty high pH make it nasty on plants, too.


^^^^ you beat me to it.

While Simple green may be less initially "damaging" to concrete and skin....it has Methylchloroisothiazolinone and Methylisothiazolinone.

These are "bio-cides". They are used in products like ships hull paints to keep moss and other organisms from growing on the hulls. The problem is that they are bio-accumulative. They do not readily degrade. So they build up in water and slowly kill off "good" plants and organisms. Ray

60vwnewengland Sun Jul 19, 2020 1:05 pm

Outdoor Bleach, water, scrubber?

Manfred58sc Sun Jul 19, 2020 5:27 pm

The Napa "Floor dry" left in place for 2-3 days does an amazing job. I grind it in with my boots and cover with cardboard ( so I can keep working in the area). I then broom the area with hot water and a touch of Dawn. Like new and you won't peel off any sealer that may be in place.

cdennisg Sun Jul 19, 2020 7:49 pm

Manfred58sc wrote: The Napa "Floor dry" left in place for 2-3 days does an amazing job. I grind it in with my boots and cover with cardboard ( so I can keep working in the area). I then broom the area with hot water and a touch of Dawn. Like new and you won't peel off any sealer that may be in place.

Works great for oil spills, not sure how it works on mold and mildew on outdoor slabs.

Cusser Mon Jul 20, 2020 6:56 am

raygreenwood wrote: While Simple green may be less initially "damaging" to concrete and skin....it has Methylchloroisothiazolinone and Methylisothiazolinone.

These are "bio-cides". They are used in products like ships hull paints to keep moss and other organisms from growing on the hulls. The problem is that they are bio-accumulative. They do not readily degrade. So they build up in water and slowly kill off "good" plants and organisms. Ray

The combination of methylchloroisothiazolinone and methylisothiazolinone is known as "Kathon CG".

This is a preservative, and present in tiny levels. Pretty much ALL liquid products (including liquid soaps, body washes, shampoos) unless high in organic solvents need some type of preservation or the product would quickly turn into a quagmire of bacteria.

LAGrunthaner Mon Jul 20, 2020 12:42 pm

Yes I'm just going to clean the dirt accumulation over the years. Sounds like I can't go wrong with mild detergent elbow grease and water, or a power washer and avoid the cracks.

Great tips, thanks & glad I asked.

BTW my59, it is a victory garden, the most tomatoes ever. Wise guy in every post :wink:
Linda



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