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Home » What Is Silicone Grout? Where to Use It?

What Is Silicone Grout? Where to Use It?

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You are about to install new tiles in your home bathroom, but you need grout to stand up to water, mold, and mildew. Silicone grout is your answer!

Although silicone grout, also referred to as silicone, is a relatively new entrant in the grout market, it has quickly become one of the most popular types due to its many advantages over traditional grout.

So what exactly is silicone grout?

Silicone grout is a type of sealant made from 100% silicone. It is used to seal off areas between tiles, such as in showers and tubs. Unlike traditional grouts, made from cement-based materials, silicone grout is incredibly durable and resistant to water, mold, and mildew.

Furthermore, it offers superior flexibility, making it perfect for countertops, showers, bathrooms, and other areas where water or moisture may be present.

What Is Silicone Grout?

Is Silicone Grout the Same as Caulk?

No, silicone grout is not the same as caulk. Caulk is a cheaper alternative that can be used to fill in small gaps and cracks. However, it will not provide the same protection against water or moisture as silicone does.

In addition, caulking doesn’t offer the same level of flexibility, which can be crucial in areas where the surface may shift or experience regular wear and tear.

What Are Different Types of Silicone Grout?

Silicone grout has quickly become the go-to for tiling projects because of its flexibility, durability, and waterproof qualities.

In addition, it is available in various colors to match any décor, making it perfect for indoor or outdoor use. It comes in different types. These include:

  • Epoxy grout
  • Urethane grout
  • Acrylic grout

Epoxy grout is the most common type of silicone grout. It is excellent for areas that experience a lot of water or moisture because it forms an impermeable seal. It is also highly durable and resistant to cracking, staining, and fading.

Urethane grout is made of urethane. It is ideal for areas that need a lot of flexibility. It is also resistant to water damage and has excellent adhesion properties.

Finally, acrylic grout is the most flexible silicone grout and can be used in areas that experience minimal amounts of moisture. It is made with acrylic and silicone, offering superior flexibility and adhesion.

It is also the least expensive type of silicone. Still, it does not offer as much protection against water or moisture as other types.

Silicone Grout Vs. Standard Grout For Tiles

Standard grout is made of Portland cement, sand, and water. It comes in a thick paste applied between tiles or other surfaces and then allowed to dry. It provides a durable seal that prevents water from entering these spaces but does not offer the same flexibility as silicone grout.

In addition, standard grout can be prone to cracking, staining, and fading over time when exposed to moisture or water.

Silicone grout, on the other hand, is made from a blend of silicone, epoxy, and plasticizers. It is much more flexible than standard grout and is highly resistant to water or moisture. Furthermore, it is available in many colors, making it perfect for any design aesthetic you may be looking for.

Silicone – Pros

  • Water and airtight – which makes it perfect for filling in cracks. This feature also protects against water seeping through and causing mold.
  • Flexible – silicone grout is adjustable, so your tile won’t crack or break due to expansion or contraction caused by changes in temperature. Hence, making it perfect for filling in corners or edges where standard grout does not work effectively.
  • Long-lasting – usually lasts longer than standard grout and is less prone to cracking and staining.
  • Effective sealant – silicone grout forms an effective seal between two tiles, making it difficult for dirt and bacteria to get trapped in the gaps.
  • Resistant to staining – it is non-porous and resistant to staining, which makes it easy to clean and maintain.

Silicone Grout – Cons

  • Compared to standard grout, silicone is expensive. It can be challenging to apply and is not suitable for outdoor use.
  • It can be difficult to remove since it forms a strong bond with the surface.
  • Does not bond to existing silicone.

How to Apply Silicone Grout

Applying silicone grout is easy and requires just a few simple steps.

First, you need to prepare the surface by cleaning it thoroughly. Use soapy water and a brush to remove any dirt or debris.

Next, insert your silicone grout tube into the caulking gun. Then start applying silicone in the form of bead lines along the edges of the tile.

Once you’ve applied the grout, use a damp cloth to smooth it out and evenly spread the silicone.

Finally, remove any excess silicone with a dry cloth or sponge and let it cure for 24 hours before using or touching the surface.

TIP: If you're applying silicone grout to old tiles, remove any existing silicone grout before applying the new layer. Doing so will help the tiles adhere better to each other.  

Watch the video below to get visual instructions on applying silicone grout between your tiles.

What if Your Silicone Isn’t Drying?

If your silicone grout isn’t drying, the first thing you should do is check the expiration date. Silicone can become ineffective over time, so if the expiration date has passed, you may need to get a new tube or container.

If the expiration date is still within range, it’s likely that your silicone grout isn’t drying due to too much moisture in the air or on the surface. In this case, you can use a dehumidifier or fan to reduce the humidity in the room and let it dry out naturally. You can also try using a hair dryer on low heat to speed up the process.

NOTE: It is important to remember that silicone grout needs some time to cure before it is scorched, so be sure to take your time with the process!

Can You Paint Silicone Grout?

Yes, you can paint silicone grout with a specialized epoxy-based paint that is designed to adhere to silicone surfaces. However, it is important to remember that painting silicone grout will not significantly change its color. Instead, it can be used to restore the original appearance of the grout by filling in any cracks or chips.

Before start painting, ensure that your silicone grout is completely dry and clean. Then apply a thin layer of paint using a brush or roller and wait for it to dry. Once it has dried, you can apply a second coat if needed.

What Can I Use Instead of Grout?

If you’re looking for an alternative to grout, a great option is a caulk. Caulk is a type of sealant that is often used around sinks, tubs, and windows. It is available in silicone and latex forms and can be easily applied with a caulking gun.

What Happens if Silicone Grout Gets Wet Before It Cures?

If silicone grout gets wet before it cures, the water can break down the curing process and ruin your project. In addition, any moisture that comes in contact with uncured silicone grout can cause it to become brittle or discolored over time.

Does Silicone Grout Need to Be Sealed?

Unlike standard grout, silicone grout does not need to be sealed. It is resistant to water and airtight and will last for years without the need for sealing.

Can You Use Silicone Sealant Between Tiles Instead of Grout?

Yes, you can use silicone sealant between tiles instead of grout. It is easy to apply and bonds well to the tile surfaces. In addition, it is more water-resistant and more accessible to clean than standard grout.

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