I think it’s about time to pave my own driveway. I wanted to find out how long does it take for the asphalt to dry, to look nice for my yard. According to many paving companies, there are several things that should be taken into consideration when paving (and sealing) your driveway.
How Long Does Asphalt Take to Dry? Typically, it takes 24 hours for fresh asphalt to dry enough for you to walk or drive on it, and only 2-3 hours for resurfaced asphalt to dry. This can take longer depending on weather conditions.
Humid, wet weather and extremely hot weather can prolong this period, as will extremely cold weather.
According to several paving companies, you should stay of your new asphalt for at least 24 hours, and don’t park a car on it for at least 5 days. If it’s a resurfaced asphalt (poured over the old layer) then only after 2-3 hours you should be safe to drive on it (if it’s not especially humid or hot outside).
Here is in more detail how long it takes, and are there any differences with cold patch asphalt.
Cure vs Dry
Are these things the same? Generally, no.
There is some confusion between these two terms.
Fully cured and dry are different things, though some companies may use the term “cure” to refer to drying process.
Curing is different than drying. Usually, asphalt takes 6 to 12 months to fully cure. The time varies on the type of mix, the thickness and weather conditions.
When your asphalt is dry, it means it’s open for traffic, but it doesn’t mean it’s fully cured, just that it has hardened enough for the vehicles to drive on it.
Cured asphalt means that it has fully hardened. During this curing time, the asphalt changes color from black to gray, and should be looked out for. Extremely heavy vehicles should avoid it, and no hard turns at high speed should be done at it. This will damage your new asphalt.
How Does Weather Affect Drying Time?
The best time to pave your driveway is on a dry day, with low humidity levels, and a bit of wind. The more humid the air is, the longer it is going to take before you can drive on it.
Extreme heat will soften the asphalt and make it harder to dry, but also to fully cure. Your new asphalt needs time to cool down. Spraying it with water can help sometimes, but most companies advise to avoid doing any kind of work in these extreme conditions, if you can. It’s best to avoid making asphalt repairs or doing paving work if the temperature is above 100°F.
If you do have new asphalt in hot weather, you can temporarily harden it by watering it down with a garden hose.
In hot weather you should drive slowly, and avoid parking your car on it, because you could damage it.
Winter time is another example of bad timing, as the cold weather will harden the asphalt before it can be finished leaving you with bumps in the pavement. Plus, it will take longer to dry, because the temperature will inhibit the water molecules in the asphalt from evaporating.
Some repair work can be done, but it won’t be ideal.
When it comes to seasons, the best time to pave your new driveway is spring or early summer, on a worm sunny day, with some breeze. It’s not too cold, too hot or too wet. It’s ideal.
If your home and driveway is completely new, it’s advisable to wait for at least two years before you pave your drive or walkways. This is because 2 years is usually enough time for the grade to settle, and the base for the asphalt to become established.
Taking Care of Newly Paved Asphalt
New asphalt needs time to fully cure and harden to look nice next. This process can take a long time, and with various degrees of success.
Most paving companies suggest taking care of your asphalt properly until fully cured, by knowing how to avoid damaging it.
Here are some of the tips you can use to help new asphalt cure better:
- Don’t park your car at it for at least 5 full days after paving
- Don’t drive to fast, or make quick turns on it
- Keep heavy vehicles away from it
- Avoid turning your wheel back and forth when the car isn’t moving
- Avoid parking in the same spot all the time
- Don’t walk on it in high heels (seriously)
- Avoid placing sharp heavy objects on it
- Avoid driving close to the edge of your new asphalt
- Most damage is done by water, so have proper drainage around it
- Sealcoat when damage starts becoming visible
By following these tips you can allow for your new asphalt to cure and harden properly, and last for a long time to come. Healthy asphalt increases real estate value, looks nicer and is safer for everyone.
Sealing Your Asphalt
Sealing, sealcoating or pavement sealing is the process of applying a protective coating to asphalt pavements, to protect the asphalt from hazardous elements, such as water, oils and UV damage.
Generally, it is advised to seal your driveway every 1 to 3 years, depending on the state of your asphalt. It’s not necessary to overuse the sealer, as it can cause peeling or cracking if it builds up, causing the alligatoring effect.
There are some clear signs you can use to know when to seal:
- your driveway asphalt is cracking in several places
- pavement is rutted or severely broken
- buckled surface, and dents appear
- fading and stains on many places
How soon to seal after laying the new asphalt?
According to several paving companies, after laying asphalt it is recommended to wait 90 days before sealing a residential driveway. This is because the asphalt need to be hard enough to withstand power steering.
Before sealing or paving your driveway, make sure that you open your garage, and remove any vehicles before you start, if you need to use them.
How Long for Asphalt Sealer to Dry?
Generally, the asphalt sealer will dry in 4 to 8 hours, while some companies recommend staying of the sealed asphalt for at least 12 hours in normal weather conditions, to ensure fully curing.
In an extremely warm weather, it’s best to let 24 hours to dry, and 48 hours in especially humid weather conditions.
To speed up your sealer drying time, use thinner layer, and make sure there aren’t any puddles forming while applying the sealer.
How to Get Cold Patch Asphalt to Harden?
It’s a cold asphalt mix designed for repairing and patching your existing surfaces.
Being different from the hot mix, it can be usable almost immediately after the repair is done. For some, you can drive on it almost instantly. However, cold patch still takes 12-36 hours to dry, and about 30 to 90 days to cure.
Using cold patch asphalt to repair is easy.
Here is how to use cold patch asphalt to fill dent or pothole:
- Remove all loose asphalt from the pothole
- Get rid of any standing water or weeds
- Clean the asphalt or the dent with detergent and high pressured water
- Pour the cold asphalt mix over the hole
- Spread the mix around so that it’s about 1.5 inches above the surface
- Use a tamper or a trowel to compact and compress the mix (if too low, add more asphalt mix and repeat)
- (optional) you can use a patch repair product around the area to make it nicer
- Throw some sand over it so it doesn’t stick
If you want to cover it with a sealer later on, it should dry at least a few weeks before applying it.
Cold patch asphalt is an easy and quick fix, but a temporary solution. It is not a permanent solution, because it does not address what is causing the problem in the base and surrounding areas in the first place.
Credits: alpineasphalt.com for cover photo.