What is the danger of laying an asphalt driveway when it is below 40 degrees outside? | |
My contractor is removing the concrete and laying in a new 3" asphalt driveway. I am concerned as the top temperature each day has been just around 40 degrees, but much cooler at night. Is it ok to let him lay the asphalt at this temperature? What I have heard is that you dont want asphalt put down if the temperature outside is 40 degrees or less. What are the dangers of letting him do this? Greatly appreciate your help and advice, this site rocks! Dale Whitworth
Answers:
From: Q.C. Guy
Dale,
Great question. More people should be aware of what kind of work they are getting. There is no real concern if the temp holds around 40 degrees while they lay it. The danger lies in moisture and rain. Asphalt and water don't work well together. Don't be afraid to grab a nail and a tape measure and check that they are giving you 3" too.
From: DeWayne Heintz
Your biggest concerns are for appearance and compaction.
The cold weather means temperature loss. This makes it more difficult to acheive proper compaction. This is not a great concern on a residential driveway, unless you have an RV or something similar that you will be parking on the pavement.
Appearance is the one thing that can really suffer with lower temperatures. A drive that is not of uniform width can really look hideous at the pavement joints when the temperatures are below 60 degrees. If you must have a paved driveway this winter, you may want to opt for a 4" pavement. Have the contractor place 2" this fall so you have a usable pavement. The 2" surface can be placed in the late spring, when the temperatures are warmer, so you can have a driveway your can me proud of.
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