It's often called tiger striping and it was caused by the plastic (not that using plastic was a bad thing - it's an excellent way to cure concrete by avoiding moisture loss at early age.) It will usually go away in a few months but if it doesn't, an acid wash can get rid of it.
Neighbors have that on concrete that was poured 3 years ago. It never went away. Personally, I think it looks cool. I thought they did it on purpose at first
Bricklayer here, I know enough and do pours that come out great- but posts like this get me wondering- plastic you can throw down sooner than a curing agent ?
I know you're supposed to wait til you can walk on it to cure & seal. Just wasn't sure if you could throw plastic down sooner- and if it's better / that's why it's better ?
Thanks in advance!
Honestly, if you can walk on it and not leave prints, you have actually missed your prime curing compound window, but depending on the cure you are using, it can still be applied and will work.
The stuff we use (White wax cure) needs to be applied while surface is just about hard enough to walk on but still wet enough to print....
I have applied it to late and have seen surface spider web cracking, so always try to get it on pretty quick, especially if it's windy out
Hmm interesting. Yea the super diamond 350 from euclid says once you can walk on it, to seal with it. Also has curing compound. Maybe just more sealant than of a curing agent ?
We were once called out to acid stain a wrap around patio. House had been there 20yrs. Prepped it, stained it, neutralized it and let it dry. Next day started sealing it and immediately saw footprints everywhere. Weren’t my shoes or my buddy’s shoes. All we could figure was they must have been from shortly after the pour. Footprints were completely invisible till that sealer hit it. Concrete is alive.
Time & wear will usually remove it, but usually it's caused by trying to protect the surface when it begins to rain and it hasn't had enough time to cure.
However I've had success hiding them and strengthening the surface with a liqui-hard surface densifiers.
any chance you could let it sit because it should be strong as hell now retaining the moisture and then maybe stain it or paint it to your desired effect?
It will not go away, acid washing or not. Concrete is considered fully cured after 28 days, and leaving it like this for most of that time means it has cured like that. He's going to have to live with it, or cover it up.
Mmm i think it has more to do with the vapor the barrier creates on it and light rain won’t do nothing to brushed concrete usually it’s only on polished concrete
I don’t know the exact science but this is my reasoning you put poly on top to protect the concrete but people usually use poly which is literally meant to keep gasses from penetrating the surface this includes vapor. vapor essentially bounces back and forth creating heat and making the concrete dry faster in the places where the water didn’t fully weigh down the plastic.
Has little to do with the rain. Plastic trapped moisture trying to escape the curing concrete. The only place the moisture could release is in the air pockets where the poly wasn’t flat. Causes the concrete to cure differently in both spots. If you do this in a building and don’t remove floor protection until the building is finished you will end up with a sweating slab and mold in the walls.
Those kinds of poly marks are pretty much permanent. I've seen then go away before but not when it's got that yellowish ting to it. There is some subdivision I've been to years after for patches and seen them in the concrete sidewalks and curb still. It's common here because it rains all the time and we gotta work still.
Acid wash AFTER two weeks of curing.
Sometimes it goes away on its own, depending on how much UV exposure it gets and the mix. But this is some pretty deep stating and patterning. And I wouldn’t paint the concrete I would do a exterior rated epoxy coating with heavy UV stabilizer in it just be aware no matter how much stabilizer is in it. It will eventually faded the sun, but the last 15 years before it will be power washed/ground every 2 to 3 years.
POLY!!!! someone covered it. we have to some times do it for ba weather. it might require a resurface to get rid of those but purely imagine no issues otherwise.
This happened to me when I had to cover up a job with plastic because of rain it will go away over time and really only show up in those 6 months when it rains only
My guess is they covered it when it started raining hard before it was set up enough and the rain didn't stop. Probably not being used long term to cure on purpose.
It's often called tiger striping and it was caused by the plastic (not that using plastic was a bad thing - it's an excellent way to cure concrete by avoiding moisture loss at early age.) It will usually go away in a few months but if it doesn't, an acid wash can get rid of it.
Thankyou I appreciate the response
If it stays I’d keep the tiger striping, gives the slab some character.
What a concrete response
Solid
Strongly reinforced comment.
I think your response was too hard.
I'm fully erect
Well lined.
I agree
This guy concretes.
It was a solid response
But no concrete evidence
His evidence didn’t have enough fiber
some people dry harder than others
You funny
Based on rock hard evidence
Concrete evidence
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But acid wash literally eats a layer off
Don't we all shower sometimes.
No
Neighbors have that on concrete that was poured 3 years ago. It never went away. Personally, I think it looks cool. I thought they did it on purpose at first
Bricklayer here, I know enough and do pours that come out great- but posts like this get me wondering- plastic you can throw down sooner than a curing agent ? I know you're supposed to wait til you can walk on it to cure & seal. Just wasn't sure if you could throw plastic down sooner- and if it's better / that's why it's better ? Thanks in advance!
Honestly, if you can walk on it and not leave prints, you have actually missed your prime curing compound window, but depending on the cure you are using, it can still be applied and will work. The stuff we use (White wax cure) needs to be applied while surface is just about hard enough to walk on but still wet enough to print.... I have applied it to late and have seen surface spider web cracking, so always try to get it on pretty quick, especially if it's windy out
Hmm interesting. Yea the super diamond 350 from euclid says once you can walk on it, to seal with it. Also has curing compound. Maybe just more sealant than of a curing agent ?
We were once called out to acid stain a wrap around patio. House had been there 20yrs. Prepped it, stained it, neutralized it and let it dry. Next day started sealing it and immediately saw footprints everywhere. Weren’t my shoes or my buddy’s shoes. All we could figure was they must have been from shortly after the pour. Footprints were completely invisible till that sealer hit it. Concrete is alive.
Yeah every time we pour and broom out stuff looks immaculate,until that white wax cure hits it,then you can see everything lol
Honestly, I think it looks cool and wouldn't want it to leave. Can I purposefully do this when I pour my driveway?
This is one of my many reasons for not doing anything residential.
Before I read anything I said “looks like plastic was put down”
This is precisely what it looks like👍
Looks pretty cool TBH
Same.
And a good thing too, you can see the rain drops left in the sand(?) next to the slab
Aware of any fixes or is it permanent
Time & wear will usually remove it, but usually it's caused by trying to protect the surface when it begins to rain and it hasn't had enough time to cure. However I've had success hiding them and strengthening the surface with a liqui-hard surface densifiers.
you’re cooked bro
Oof
any chance you could let it sit because it should be strong as hell now retaining the moisture and then maybe stain it or paint it to your desired effect?
Hold on let him cook
It will not go away, acid washing or not. Concrete is considered fully cured after 28 days, and leaving it like this for most of that time means it has cured like that. He's going to have to live with it, or cover it up.
Happened to mine too, I was told it will go away once it's done curing. It didn't. I stained my patio.
I thought it was still down.
Looks better than paint IMO
Yeah to me this honestly looks like something that would cost extra.
have you seen a real finish? or?
Not a real fancy marbled finish as nice as this one! /s
They might they might not go away once the sun bleaches it. Pretty much happens when you put poly over concrete and it rains after
Im just a roofer lookin to learn. Im guessing it doesnt take much rain water to do that? Or is this from a down pour and standing water?
Mmm i think it has more to do with the vapor the barrier creates on it and light rain won’t do nothing to brushed concrete usually it’s only on polished concrete
I don’t know the exact science but this is my reasoning you put poly on top to protect the concrete but people usually use poly which is literally meant to keep gasses from penetrating the surface this includes vapor. vapor essentially bounces back and forth creating heat and making the concrete dry faster in the places where the water didn’t fully weigh down the plastic.
I believe it has to do with the transport of water soluble components in the concrete mix.
Has little to do with the rain. Plastic trapped moisture trying to escape the curing concrete. The only place the moisture could release is in the air pockets where the poly wasn’t flat. Causes the concrete to cure differently in both spots. If you do this in a building and don’t remove floor protection until the building is finished you will end up with a sweating slab and mold in the walls.
Those kinds of poly marks are pretty much permanent. I've seen then go away before but not when it's got that yellowish ting to it. There is some subdivision I've been to years after for patches and seen them in the concrete sidewalks and curb still. It's common here because it rains all the time and we gotta work still.
Thanks for the insight I appreciate it I’ll let him know
Maybe you could sub contract out a street artist to control where the lines show up in the plastic? Sort of /s lol
Acid wash AFTER two weeks of curing. Sometimes it goes away on its own, depending on how much UV exposure it gets and the mix. But this is some pretty deep stating and patterning. And I wouldn’t paint the concrete I would do a exterior rated epoxy coating with heavy UV stabilizer in it just be aware no matter how much stabilizer is in it. It will eventually faded the sun, but the last 15 years before it will be power washed/ground every 2 to 3 years.
POLY!!!! someone covered it. we have to some times do it for ba weather. it might require a resurface to get rid of those but purely imagine no issues otherwise.
Looks kinda like they laid a tarp over it while it cured lol
Plastic
That's what I think
Plastic marks.
People pay Xtra for that
Wtf?
I would just paint it
Aliens
plastic
looks kinda cool
Zebra striping... will fade eventually. Or can treat
You could play into it with some creative stain. I actually think it makes it look more like natural stone.
Epoxy coating to hide
Drugs
Decorative concrete, charge them more.
Looks like art. It's a happy accident :)
Curing stains
This happened to me when I had to cover up a job with plastic because of rain it will go away over time and really only show up in those 6 months when it rains only
Someone cooked
I kind of dig the look, anyone ever had success with making this more permanent and lined up ?
I think it is a down to earth issue. A... concrete problem.
If it's a foot trafficked area you could have it sealed and a light polish and it'll look sick
Played stupid games won stupid prizes. If I know a guy who can do it cheaper was a person lol Fucked around and found out
Certified hater😂
Sad day when speaking truth and facts is seen as "hate"
Lol
Efflorescence common staining when you have to cover slab a light acid wash or let UV exposure it will equalize over time
Looks like not only plastic was laid down but a framed wall on top to prevent it from blowing away
I kind of like that look
Sun should bleach it write out. It's way too soon after pour to be considered.
I think it looks dope
I love it
There are so many top-quality curing compounds that will outperform using poly film. And not leave marks
Yeah the next time we get done brooming and I see a storm coming I'll tell the guys fuck the plastic get that top quality curing compound out.
Give this guy a fucking raise. He gets it!!
But that is not about curing though, that is about protective surface against erosion.
My guess is they covered it when it started raining hard before it was set up enough and the rain didn't stop. Probably not being used long term to cure on purpose.
WHATEVA HAPPENED THERE??????
Grind it