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Question DetailsAsked on 8/1/2016

how can my newly resurfaced patio match the color of the extended portion?

Good day - last week I had a contractor extend my back patio by tying the new section of the patio to the old slab(old slab is tied to the foundation of the house) . I wanted the extended patio to be stamped and stained with a nice border around it however I was unsure of this look due to the old slab not having the same look so my contractor said he can resurface the old slab and stamp and stain it to match the new extension so I gave him the OK. now that the patio is completed there is a clear distinction of where the old slab ends and the new slab begins the color of the old slab is about 5 shades darker than the new section. the contractor used an integral color in the new section (not sure how he stained the old resurfaced section) the patio is now sealed and the wife isn't happy with the color distinction. is there anything we can do or the contractor can do to fix this color issue? I really love the new section of the patio its perfect.

any input is much appreciated.

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1 Answer


Oops - hopefully your contract/work order stated that the color was to match between old and new sections, because he blew it.

If using overlay on the old section to match integral color in the new section, he should have used the same colored mix to do the overlay as the new section at the same time - meaning usually at least a 1.5-2" overlay to be able to get mesh into it for reinforcing.

If he was going to stain the overlay then he should have stained the new section as well, using uncolored concrete there, and waiting a month or more for it to totally cure so the two sections would "take" the stain pretty much the same - and should have prepped both surfaces the same before staining (i.e. usually sandblast).

In either case, he should have done the same procedure to both sections at the same time. There is no way you will get the same color in both sections at this time - he could try restaining the new section to bring it closer to the overlay on the old - but unlikely to get anything like a perfect match.

At this point, alternatives are to tear it all out and start from scratch with one pour for the whole thing, or put another overlay over the top of the whole thing (old and new sections both) stained or colored mix as desired. Of course, another overlay increases the risk of delamination of the overlays, and may also bring the elevation too high relative to the foundation or door sill because you would be putting another couple of inches at least on it.

You don't say if you have paid him yet - if not then yuou have some bargaining power. If so, you are in s tough position to get him to redo it, and if you paid him that was implied acceptance of the job so calling his Bond to have them pay for a redo is a battle you are unlikely to win because it is not a defect that just became apparent so should be covered under warranty - it was evident at the time he finished, presumably, unless it took a bit of curing time for the color difference to become apparent.

Answered 3 years ago by LCD

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