Stop Guessing! Learn When to Use Sanded vs Non-Sanded Grout

Choosing the right grout for your tiling project is crucial. The wrong grout can lead to cracking, staining, and damage over time. But with so many options out there, it can be confusing trying to decide between sanded and non-sanded grout.

In this post, we'll break down the key differences between these two major grout types so you can pick the best one for your needs. You'll learn the pros and cons of each, plus recommendations on optimal uses. Let's dive in!

What is Grout?

Before we compare sanded and non-sanded grout, let's cover the basics. Grout is a cement-based material used to fill the joints between tiles. Its purpose is to prevent moisture and debris from seeping underneath tiles and causing damage.

Grout also plays an aesthetic role by complementing or contrasting with the tile color. And it provides stability by binding tiles together into a cohesive surface.

There are many grout variations, but most fall under two main categories:

Sanded Grout

Sanded grout contains sand particles mixed into the cement base. The sand acts as a filler, giving the grout enhanced durability and strength. Sanded grout resists shrinking and cracking as it cures.

The sand also makes sanded grout thicker. It can fill wider joints between tiles, typically those with gaps larger than 1/8 inch.

Non-Sanded Grout

Non-sanded grout does not contain sand fillers. It has a smoother consistency making it ideal for filling narrow, thin joints under 1/8 inch.

Non-sanded grout allows for greater precision between tiles spaced tightly together. And it leaves a uniform appearance without sandy texture.

Key Differences

Now that we've covered the basics, let's compare the key factors between sanded and non-sanded grout:

Joint Size Compatibility

The main determining factor between the two grout types is the width of the joints. Sanded grout is best for wider joints with gaps larger than 1/8 inch. The sand particles allow it to fully pack into and fill the open spaces.

Non-sanded grout works best for narrow grout lines under 1/8 inch. The lack of sand allows it to flow smoothly into tight joints between tiles.

Durability and Strength

Sanded grout is generally more durable than non-sanded. The sand acts as an aggregate, fortifying the cement and providing greater strength. This resistance to cracking allows it to stand up to heavy foot traffic.

Non-sanded grout offers sufficient durability for most applications but may be more prone to shrinking and cracking over time. With proper installation and sealing, it can perform well for low-to-medium traffic areas.

Scratch Resistance

The fine sand particles in sanded grout can scratch softer polished and glass surfaces. Non-sanded grout will not scratch tiles, making it a better choice for glass mosaic or polished marble.

Appearance and Finish

Sanded grout has a rougher, grittier texture due to the sand. Non-sanded grout offers a smooth, uniform appearance without sand for a more polished look.

Ease of Application

Non-sanded grout is typically easier to work with than sanded grout. The lack of sand allows it to spread smoothly into thin joints with less need to force it into place.

Sanded grout requires more effort to fully compact it into wider gaps. But proper technique can still allow for an efficient application.

Maintenance Requirements

All grout should be sealed periodically. Sanded grout will likely need more frequent sealing due to its porous nature. Non-sanded grout provides a more stain-resistant surface with less frequent sealing needed.

When to Use Sanded Grout

Now that we've compared the two types, when is sanded grout the best choice? Here are common applications where sanded grout excels:

• Grout joints wider than 1/8 inch
• Floor tile installations
• High foot traffic areas like kitchens
• Outdoor areas exposed to weather
• Showers, tub surrounds, and pools

Sanded grout is the optimal choice for any setting where durability is a priority. The sand strengthens it against cracking from heady impacts or shifting. This makes sanded grout ideal for floors, counters, and other surfaces that see a lot of wear.

It also stands up well to water exposure in bathrooms, pools, and outdoor patios. And it can fully fill and seal wider grout lines found on many types of large format tiles.

When to Use Non-Sanded Grout

• Grout lines less than 1/8 inch
• Wall tile installations
• Vertical surfaces like backsplashes
• Glass, polished, or natural stone tiles
• Shower walls

Non-sanded grout allows for precise, thin joints between tiles spaced tightly together. The lack of sand prevents scratching of softer surfaces.

It adheres well to vertical applications like shower walls where gravity can cause sanded grout to slump. And the smooth finish highlights the beauty of glass mosaics and other delicate tiles.

Non-sanded grout provides sufficient durability for most walls and backsplashes that don't see as much abuse as flooring. Proper sealing is key for stain resistance.

Mixing and Applying Grout

While the base ingredients differ, mixing and applying techniques are similar for both grout types:

Mixing

Follow package directions to achieve the right consistency. Allow the proper cure time before applying. The grout should flow easily but not be watery.

Tools

Have grout floats, a rubber grout float, sponges, and buckets ready. Proper tools make application much easier.

Application Tips

Hold floats at a 45deg angle, forcing grout fully into joints. Mix small batches to prevent premature hardening. Let the grout firm up slightly before smoothing for best results.

Curing and Sealing

Allow at least 72 hours to cure before light use, longer for heavy traffic. Apply a penetrating sealer to protect from stains.

Grout Maintenance

All grout needs proper care over time. Here are some tips for keeping your grout looking its best:

Cleaning

Use a pH-neutral cleaner and soft brush monthly. Avoid acidic cleaners which can degrade grout.

Re-Sealing

Re-apply sealant every 1-2 years for sanded grout, 3-5 years for non-sanded. Check for wear before re-sealing.

Repairs

Small cracks can be filled with new grout. Severely damaged or missing grout requires regrouting. Match grout color when making repairs.

Choosing sanded or non-sanded grout requires considering factors like tile type, joint size, and traffic. Sanded grout provides heavy-duty durability for flooring and wide joints. Non-sanded grout allows a smooth finish for walls and polished surfaces.

As long as you select the appropriate grout for your particular tile installation, you can achieve a look that lasts. Armed with the info above, you can stop guessing and install the perfect grout with confidence.