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Question DetailsAsked on 9/20/2011

Is there a "best" time of year to replace a cement driveway?

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It's best not to replace your driveway during times of temperature extremes. i.e. during the blazing summer heat or during cold weather when the temperature drops towards freezing. Most contractors will add "anti freeze" when they pour concrete during cold weather to keep it from freezing before it's finished. Then they'll put insulated blankets on top of the concrete to make sure it stays warm enough to cure properly. Concrete takes about 30 days to fully cure, but about 95% of the curing is done after about two weeks, so the insulated blankets should remain in place that long. Most contractors will want to take the blankets off after just a few days or so.
In the summer, the high temperatures will evaporate the surface moisture and cause the concrete to cure at different rates. The concrete manufacturers will recommend that you mist the concrete occasionally to insure that the surface doesn't dry out before curing is complete. The only problem is I've never seen a concrete contractor do the misting part.
Because of the extra steps that need to be taken while pouring concrete during times of temperature extremes and because most concrete contractors don't take those extra steps, I would recommend that you pour your concrete during the spring or fall. Of course winter is a good time to pour concrete in Phoenix and mid summer is usually fine in San Francisco.

Answered 8 years ago by JGHamm

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