One thing that causes delays in projects is underestimating drying time. When someone asks, “how long does polyurethane take to dry?” they usually want to know how long does it take for polyurethane to cure.

Therefore, when you are planning a new wood project, it is crucial to get the timing right, or it could cost you money and your reputation.

After all, nobody wants to be the contractor who promises to deliver a piece in a few days, only to show up a month later.

In this article, we’ll discuss

  • How long does it take polyurethane to dry
  • How long does water based polyurethane take to dry
  • How long does oil based polyurethane take to dry
  • How long does varathane polyurethane take to dry
  • How long for polyurethane to cure
  • How to speed up polyurethane drying time

Let’s dive right in;

How Long Does Polyurethane Take to Dry?

Polyurethane takes 2 to 24 hours to dry, and cures in 30 days. The drying time is determined by the type of polyurethane you use. For instance, Water-based polyurethane dries in about 2 hours while oil-based polyurethane needs about 8 hours to dry.

What is the Difference Between Drying and Curing Time of Polyurethane?

Drying time is the period between coats of polyurethane, while the curing time is when the wooden surface is ready for use.

When polyurethane dries, it means it has stopped being tacky and is now dry to the touch. You can then apply another coat or more as required.

After the final coat has dried, you can walk on the wood surface with socks on, but you shouldn’t put heavy things on it as it isn’t yet strong enough to support a lot of pressure.

You also shouldn’t spill any liquid on it, or it will seep through to the sanded wood, and you’ll have to start all over. In other words, it is not yet durable, water-proof, or useful.

How Long Does Water Based Polyurethane Take to Dry

Water-based polyurethane drying time can be as little as 1 hour. After this, you can touch the surface. Within three days you can start using the surface. But, it could take up to 21 days for water-based polyurethane to completely cure.

How Long Does Oil Based Polyurethane Take to Dry

Oil-based polyurethane dry time is about 4 hours for fast drying formulae. But some polyurethane finishes might dry within 24-48 hours.  As for curing, you need 30 days to cure properly. The surface is ready for use after 4 days or more.

In comparison, other primers need 12-24 hours to reach the drying process.

How Long Does Polyurethane Take To Cure

When the polyurethane is cured, it means that it has dried completely. You now have the finished product that will easily support your furniture, handle foot traffic, and withstand scratches for the next few years. 

The curing time is as follows: 

  • Water-based polyurethane takes 3 days to 21 days. 
  • Oil-based Polyurethanes lasts for 21 and 30 days. 

Brands such as General Finishes recommend that you wait the full 21 days after applying the final coat of the water-based topcoats before active use. 

We’ve created a  polyurethane cure time table so that you don’t lose your patience, as some might take up to a month, depending on the prevailing weather conditions.

Water-based PolyOil-based Poly
Time between coats8 hours24 hous
Dry to touch24 hours48 hours
Ready to place things2 days plus4 days plus
Completely Cured20 days30 days

Factors Affecting Polyurethane Drying

Several factors affect how soon polyurethane dries. They range from the base it’s made of to the conditions they are applied under. Some of these factors are:

1. Type of polyurethane finish

There are two major types of polyurethane finish going by their base composition, and they affect their drying time. They are: 

Type of polyurethane finish

a). Oil-based polyurethane: this type of polyurethane uses petroleum products, mineral, and liquid solvent as the base, making it quite thick and durable.

Oil Based Polyurethane curing time

Oil-based polyurethane takes anywhere from 4 hours to 24 hours to dry, depending on the formula. It requires at least 30 days to cure fully.

Fast-drying polyurethane might cure in 21 days, but weather conditions might delay it. Also, woods like rosewood or aromatic cedar may cause project delays due to their natural oils that slow the process.

b). Water-based polyurethane: as the name suggests, this type of polyurethane is mainly comprised of water. The result is you get thinner and lighter coats than oil, the drying phase consists of the water evaporating which means it dries quicker, having a short cure time.

Water Based Polyurethane drying time

Water-based polyurethane is dry and ready for the next coat in 2 hours in optimal conditions. It can also fully cure in 3 days, but so many factors such as how many coats can delay this process, so you should estimate at least 3 weeks.

It is always better to finish a project ahead of time than to ask for more time. Don’t you agree? Moving on…

2. The temperature

The second most important factor influencing how quickly polyurethane dries and cures is heat or the temperature.

The ideal temperature for polyurethane to dry is between 70 – 77 degrees Fahrenheit. If the temperature is much lower, it can extend the drying time by a few hours or even a few days.

That is why most manufacturers tell you the optimum polyurethane drying temperature for applying the finish. If the temperature is in the mid-50s, they might tell you not even to bother applying it.

What about high temperatures? Higher temperatures will make the poly dry quicker, but that isn’t necessarily good. It might crack if the outer surface dries too fast, which might even be worse than a slow drying time. Hence, take caution when you apply heat.

3. Ventilation

When you apply polyurethane and other coverings on bare wood, it is good practice to keep the windows shut so that dust doesn’t enter. However, given the strong odors from some finishes, mainly oil-based polyurethanes, you should leave the windows open.

You also need adequate ventilation for the polyurethane finish to dry on time. Yes, there is the risk that the dust might come flying back in. If that happens, sand the coat and apply it again.

A fan is an excellent way of boosting ventilation and getting rid of polyurethane smell without risking as much dust. In my experience, this has rarely been a problem.

You should be okay if it isn’t a windy day.

4. Humidity

Here is another essential factor, which goes hand in hand with the temperature. The ideal humidity for water-based polyurethane to dry is 50% and 70% for oil-based polyurethane. Of course, brands and products differ.

However, what is consistent is that when it is too humid, the polyurethane will take much longer to dry, and the opposite is also true.

Now, you’re probably concerned that high temperatures in the summer also mean high humidity in some areas, and you’re right.

In that case, you can control the indoor quality using three devices:

  • A humidifier
  • Dehumidifier.
  • HVAC system

You probably need these devices in your home anyway, so this shouldn’t add to the project’s cost. But if you don’t want to buy them, wait for better weather conditions.

Related: How to Fix Polyurethane Mistakes

5. The Thickness of the Coat

The rule when applying polyurethanes is to always use thin coats. Thin coats dry faster and more evenly. Plus, they are easier to amend if there is a problem.

When the coat is too thick, it will take considerably longer for the polyurethane to dry. You need to be patient and not try to enhance it using a blow-dryer, or the inner coat might cake.

That is why many professionals often advise against the triple-thicker coat of poly or one coat poly. Even though they often claim to dry quickly, they rarely do.

6. Application 

Polyurethane finish can be sprayed on, brushed on or wiped on. If you choose a method that does not allow you to control the amount you’re applying properly, you could end up putting in too much, which slows the process. 

When you use a spray or wipe-on poly, the finish will dry much quicker than when you use a brush or a roller. That is because the multiple coats are thinner and lighter with the former application methods.

Remember to wear protective equipment to avoid contact with volatile organic compounds.

7. The Type of Sheen

There are four main types of sheen, from lowest to highest: 

  • Matte (labeled as flat)
  • Satin
  • Semi-gloss polyurethane
  • Gloss (sometimes referred to as high gloss) 

Gloss and semi-gloss finishes take marginally longer to dry for both types of polyurethane.

8. Condition of the Wood

Polyurethane finish dries faster on raw wood. If there is already a finish on it, it will take much longer to dry, especially if you apply water-based polyurethanes over an oil-based product or vice versa.

If you applied a stain and it hasn’t cured, it will also delay the drying time of the polyurethane.

Oil-based polyurethane is dry when you can no longer smell it, and the surface is no longer tacky. Water-based polyurethane is dry when the surface is not cold to the touch.

At this point, you can apply the second coat (after light sanding, of course), apply the third coat and then repeat in the subsequent finishing processes. How well you sand the wood may also affect the drying time, especially if it was previously finished.

9. The Formula of the Finish

Finally, the most important factor determining the polyurethane’s drying and curing process is the product you are using. 

  • Fast-drying variants of oil-based polyurethane dry in a third or even a sixth of the cure time it takes regular oil-based finishes.
  • Fast-drying formulae with water-based polyurethane tend to be half the time.

 While there are pros and cons to using the speedy alternatives, this is a significant advantage to consider when planning your next project.

How to Speed Up Polyurethane Drying Time?

The four most reliable ways of making polyurethane dry faster without damaging the product are:

  • Increasing the air temperature (70 degrees Fahrenheit is ideal )
  • Lowering humidity by opening windows
  • Applying thin layers
  • Preparing the surface properly before application

If you are using a fast-drying alternative, don’t attempt to speed up the drying time unless the poly is taking much longer than advertised. Otherwise, you might just ruin the first coat, and you’ll have to start all over.

How to Speed Up Polyurethane Drying Time?

How Long Does Poly Take to Dry

Drying time between Poly coats1 day6 hoursDon’t wear shoes nor allow pets
Walk with shoes after2 Days1 day
Furniture replacement after4 days2 daysUse furniture legs or pads
Keep away rugs or mats for14 days 14 daysSweep lightly
Cure time30 days30 days


How long does it take for water-based polyurethane to dry on hardwood floors?

Water-based polyurethane can dry on hardwood floors in as little as 4 hours. After this, you may walk on the floor with socks. Within three days you can start moving furniture back on it. However, it may take up to 21 days for water-based polyurethane to fully cure. If you’re finishing your stair treads and railing, here are some of the best polyurethane for stairs that I recommend.

How long does it take for Minwax polyurethane to dry?

Minwax polyurethane drying time is between 4-6 hours. The fastest drying oil-based Minwax polyurethane is dry in as little as 4 hours, while the quickest water-based polyurethane is dry in 2 hours. Even the Minwax first Coat dries in just 2 hours.

How long does polyurethane take to dry on wood furniture?

Polyurethane dry time on furniture is 2 hours when you have proper ventilation and the right weather conditions. The polyurethane cure time is much longer at 21 days for water-based poly and 30 days for oil-based polyurethane.

How long does spray polyurethane take to dry?

Within 2 hours of application, spray polyurethane should be dry to touch. At this point, you can add the second coat. You would need to wait overnight before it will be ready for light use and at least 3 days before it has fully cured. You can use at least three coats.

How long does Varathane polyurethane take to dry?

The fastest drying Varathane polyurethane takes 2 hours to dry. When applied with an aerosol, it can be dry in just 30 minutes. The finished surface will be dry enough for light use after 24 hours and cured enough for normal use in 3 days.

When can you walk on polyurethane wood floors?

When using water-based or fast-drying oil-based finish, you can walk on polyurethane wood floors with socks in 24 hours. After 7 days, you can put heavy things on polyurethane wood floors.

Read: How to Remove Polyurethane From Wood Without Sanding

How long does fast-drying polyurethane take to dry?

Fast drying polyurethane takes up to 4 hours for oil-based and 2 hours for water-based formula. It depends on the brand of fast-drying poly you use, temperature, and humidity conditions. You can always speed up the drying process by using a hair dryer or fan to circulate air around the polyurethane drying area.

How long does it take for polyurethane to cure?

Polyurethane takes around 30 days to cure fully. However, it will dry to the touch between 24 and 48 hours. So, if you want to put a coat of polyurethane on your project, you can expect it to be ready in about a month.

The best temperature to apply polyurethane

The perfect temperature to apply polyurethane range from -62°C to 93°C. If the temperature is too cold, the polyurethane will become difficult to spread, and if too hot, the polyurethane will begin evaporating and become difficult to work with. Apply your polyurethane in conditions within this ideal temperature range for best results.

Varathane water-based polyurethane dry time?

The dry time for Varathane water-based polyurethane can last between 1 to 3 days. After 24 hours, the finish will be dry for light use. However, to be sure, it’s advisable to wait for 3 days before resuming normal usage of your surface.

Read: What happens if you apply polyurethane before a stain is dry?

How Long for Polyurethane to Dry?

As you have seen, there is a vast difference between drying times and curing times. Answering the question ‘how long to wait for polyurethane to dry’ is complicated because the user just might mean curing time.

But we’ve also tackled how long for polyurethane to cure fully. Evidently, many factors affect drying times, so be sure to get conditions as close to optimal as possible.

While water-based polyurethane dries quickly, it takes almost as long as oil-based polyurethane to fully cure.

2 thoughts on “How Long Does Polyurethane Take to Dry?”

  1. Is it necessary to sand a tabletop between coats of water-based polyurethane? This is a old table that is finished already with warped, inlaid wood or wood-looking tiles that I purchased from college students.
    I have already coated it three times with water-based polyurethane, and not sanded.
    It is fir my college aged grandson and his friends.
    I also considered putting “Ultra Epoxy” over this to give it a harder surface and fill the little “trench” around the edges that were full of dirt and debri. Yuck! Why do they make a table in that fashion anyhow?


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