How Long Does Grout Take To Dry?

Grouts are used throughout homes as they fill gaps between tiles or flooring. For them to work their magic, they need adequate drying time; otherwise, all efforts are lost. On average, this takes around 24-72 hours depending on various factors including environment and weather conditions.

Drying times vary from one location/climate zone to another because of the different levels of heat and humidity. For instance, a hot sunny day might only need 24 hours while an overcast location may take up to 72 hours or longer.

Different types of grout also affect drying times; some absorb more water than others and so will actually soak for longer periods before they are ready to be walked on again.

Moisture trapped inside flooring or walls by un-dried grout can also cause mold growth over time which is costly to repair.

This article will examine the factors that affect how long grout takes to dry.

Varies on the Climate

Drying time varies depending on climate; warmer climates take much less time than colder ones. For instance, a sunny day with high temperatures may only require a few hours of drying while an overcast day might need up to 72 hours or longer for drying purposes.

Drying times also depend on what type of grout was used: some are more porous than others so they soak up more water during application which means more waiting is required before you can walk on them again safely.

Importance of Waiting for Your Grout to Dry

However, waiting for your grout to dry is important because it can lead to a number of problems that are difficult and expensive to fix. For instance, if you walk on wet or damp grout before it has dried properly then the surface will soften and may even crack; this is especially true with porous types of grouts which don’t absorb as much water.

When this happens, adhesive materials like tile glue cannot attach as securely between the gaps in the tiles so there’s an increased risk they’ll fall out later down the line – not good!

Furthermore, when moisture remains trapped inside flooring or walls by un-dried grout (known as efflorescence), mold growth can occur over time leading to costly repairs needed to fix the problem.

So, make sure you get all your grout to dry before walking on it again, and then seal them for protection!

Key Points

  • Drying time for grout will depend on what type of climate it is, the temperature and most importantly, the type of grout used.
  • Porous types need more drying time because they soak up water during application so waiting before you can walk on them again will be necessary.
  • Grout needs 24-72 hours to dry depending on climate and type of grout used.
  • The consequences of not allowing sufficient drying time can be expensive or even damaging – especially when porous types are concerned.
  • It is recommended that once dried, the surface should be sealed for extra protection against moisture buildup in flooring or walls as a result of efflorescence (moisture getting trapped by un-dried grout). This will also prevent mold growth over time which could lead to costly repairs needed later down the line.

Type of Grouts Used: Porous Grout vs Non-Porous Grout

One of the most important differences in grouts is the level of porosity. Porous types of grout are unable to absorb water, meaning that they will soak up moisture for longer. This is bad because it means that your grouts won’t dry out and you risk damaging your tiles, flooring, or other surfaces.

Non-porous grouts are able to absorb water which is good because it means that they’ll dry out on a more regular basis which can help avoid problems such as mold growth over time.

Porous Grout

Porous grouts may have more flexibility and versatility due to their greater absorption rate. In terms of cost, porous grouts are generally more affordable and slightly more environmentally friendly as they contain fewer additives.

Relatively inexpensive and easy to find, porous grout comes in both white and darker colors. This type of grout can be used on top of concrete floors without having any problems.

However, it can take up to 72 hours for this type of grout to dry so be sure not to walk on them until they are fully dried.

This is especially important if you’re using porous grouts in an environment that has high levels of humidity such as a bathroom or kitchen because these areas have plenty of extra moisture aiding the growth of mold over time unless there’s adequate drying time.

Porous grout is best for bathroom flooring.

Porosity allows water to penetrate the surface easier. This means that while the floor may appear wet after someone has taken a shower or had been standing there with wet feet – if you go over it with your hand then you’ll feel how damp it feels beneath your fingers.

If you’re a tenant, then this is likely to be the case after using the bathroom in your home. What’s more – because porosity allows water to penetrate so easily and quickly – it also means that sponges will dry out quicker than they would on non-porous grouts as there are no pores for them to soak up all of the moisture from splashing or being submerged in water.

Non-Porous Grout

Non-porous grouts typically have more staying power and are less susceptible to water penetration. This type of grout dries quicker than its porous equivalent but it also comes at a higher price point. Non-porous tiles will, however, last longer and require less maintenance overall compared with their counterparts.

You should note that some types – like epoxy resin-based ones – aren’t suitable for use in wet areas like bathrooms because they can’t be used underwater.

Non-porous grouts are more commonly used in commercial buildings and high-traffic areas. These include hotels, shopping malls, schools, and hospitals as they can withstand wear and tear much better than porous grout.

Non-porous grouts also dry quicker due to their lack of pores which makes it a great choice for those who want quick turnaround times on projects within these environments.


The grout in your kitchen and bathroom floors is one of the most important aspects to keep clean because it can show a lot of dirt. There are some things you should know about how long it takes for grout to dry though so that you don’t end up with wet feet or other issues.

Moisture will cause mold growth which could lead to respiratory problems if not taken care of quickly. Therefore having this knowledge allows you better protect yourself from these health risks while also getting your work done faster!