Blankets were down for the first week before he power washed it? Or he removed the blankets the next day to cut control joints and power washed it then ? Clarify the timeline a little please.
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concrete was poured Dec 23 (weds)
control joints and blankets down 1 day later (thurs)
blankets removed and power washed 6 days later (dec 30)
Your contractor is an idiot. You NEVER power wash concrete that hasn’t cured for a MINIMUM of 30 day from date of pour. Can be longer depending on conditions. What happens is the pressure degrades the surface/finish and it flakes off. Where is the missing piece? Contact the concrete company that supplied the mix. They have people that will come look at it and are usually very good at trouble shooting your problem. Tell them exactly what happened. The company that the mix came from can be your greatest ally when going after the contractor for replacement. Also DO NOT make final payment to the contractor until they warranty the concrete from future flaking. Make that warranty for a MINIMUM of 1 year. I’m willing to bet your going to see many more problems then just that spot. I’ve been working as a batchman in a concrete plant for many years. So I’ve seen A LOT of stupid thing done by people that call themselves a concrete contractor. Any fool can pour and screed concrete. Not all can make it look nice and have it last.
A 1 year warranty was included, I made sure of that. As far as the integrity of the concrete, with your experience, is there anything to worry about? With it obviously being cause by the power washer, does it show pre-mature signs of anything else? Temps have been fluctuating from 30’s-50’s and the blankets have been down for the first week.
Thanks for your detailed response.
I went through something similar when my shop was built. Poured the concrete floor and it got unexpectedly cold. Had a few spots like that
Advice ranged from don’t worry about it to tear it all out.
After a lot of anxiety I had the contractor patch the spots and got a slight price reduction and it’s held up OK. I won’t be having any concrete work done anywhere near winter going forward though.
Its been non stop anxiety. Ill work on getting it patched by them. Family did the job so thats where it gets tricky. And yes, ive learned my lesson the hard way lol. I got quite a price break anyways, as it was 17 yards of concrete for $8k
How long does it take to cure in these temps?
temps here in ohio haven’t been too bad. 40’s to 50’s during day and most nights staying above freezing.
I was told 2 weeks before driving on it.
Yeah the temps have been fluctuating from 40’s to 50’s during the day and 20’s to 30’s at night. Wondering if that played a role..
As long as this doesn’t reveal issues with the overall integrity.
