Grout drying time can take up to 72 hours; prepare accordingly
It typically takes grout 24 to 72 hours to dry, but it depends on a few factors.
Grout sealer further protects your tile job but adds to the drying time.
Epoxy grout dries the fastest; cement grout takes the longest.
Installing new tiles can give your bathroom or kitchen an immediate facelift. But whether you hire a pro or DIY the installation, you need to make sure the tile is correctly grouted to protect against debris, staining, and water infiltration. Here’s a look at the factors that affect how long it takes for grout to dry.
Waiting for grout to dry is essential to the success of your tiling project. If you don’t wait the full 24 to 72 hours it takes for grout to dry, you could end up with damaged tiles and other problems.
Many factors affect how long it takes for grout to dry, including the type of grout, humidity levels, and temperature.
Each type of grout takes a different amount of time to dry and cure. Here’s what to expect.
| Type of Grout | Dry Time | Details |
|---|---|---|
| Sanded | 72 hours | Most common and easy to work with |
| Unsanded | 72 hours | Best for narrow grout joints |
| Epoxy | 24 hours | Durable but hardest to work with |
Humidity levels in each room differ. Bathrooms typically have much higher humidity levels than kitchens, so you'll need to allow for a longer time for the grout to dry. In addition, anything in the room that can increase humidity levels, such as plants, could affect how long it takes grout to dry.
In general, the warmer a room is, the faster grout dries, assuming low humidity levels.
The ideal way to let grout dry is to let it sit for the suggested amount of time, usually 24 to 72 hours. If you need to access the area sooner, these tips may help, but use them at your own risk.
Dry with a hairdryer: Since the idea is to evaporate the moisture in the grout, heat from a hairdryer may help speed up the process. If you have a large area to dry, this may not be the most feasible option.
Use a fan: Helping the air circulate can improve the grout’s drying time.
Use a dehumidifier: If you installed grout in a humid area such as a bathroom, adding a dehumidifier may help the grout cure more quickly.
Remove plants: If you have plants in the room where you installed the tile, remove them while the grout dries to reduce humidity levels.
The best way to ensure your grout is completely dry is to follow the manufacturer’s instructions to the letter. The typical cement ground found at most hardware stores takes 48 to 72 hours to dry. It’s tempting to touch grout to see if it’s dry, but try to resist.
That said, you’ll likely notice that wet grout is much darker than dry. For example, look at the area you first grouted, and compare the color of the grout to an area you just finished working on. You’ll likely notice a difference.
Grout sealer offers further protection from water retention and mold growth. Don't skip this step. Even though you’ve patiently waited up to 72 hours for your grout to dry, you may need another 72 hours for the sealant to fully cure.
Never apply grout sealer immediately after applying grout. Instead, wait until the full grout drying time has elapsed, and then apply sealer. The sealer is like the 'insurance policy' on the grout.
Avoid using the shower or walking in the area while the sealant cures. During this time, you could brush up on how to clean floor tile grout so you know how to keep your new tile job looking fresh.
Like any DIY project, there are common errors to avoid when it comes to laying and grouting tile. Having the right tiling tools is a start, and if you’ll be tiling inside a shower, you’ll want to take extra tile shower waterproofing steps, since the area is exposed to large amounts of water.
Mixing improperly: Grout should be the consistency of peanut butter. Mix it precisely to the manufacturer’s instructions so you don’t add too much water, which can lead to cracking or loose grout.
Showering too soon: It’s important to wait at least 72 hours before using the freshly grouted shower. If the grout is exposed to moisture early, it is at a higher risk of mold growth or crumbling.
Walking on floor tiles too soon: As with the shower, grout needs 72 hours before you put it to use. For floor tiles, that means not walking all over the fresh grout before it’s dry. Otherwise, you’ll weaken the grout.
Spreading grout unevenly: For a smooth, long-lasting finish, make sure to use an even amount of pressure and angle your grout float at a 45-degree angle. If you struggle with applying the grout, hiring a tile expert near you will ensure a perfect, seamless finish.
Not sealing the grout: Grout sealant is essential for long-lasting grout. This step protects the grout from moisture and stains. Grout should be resealed every one to two years.
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