The best grout sealers (review) to buy: top 7 picks

Keep your tile grout clean for years to come. Here are the best grout sealers to maintain your tiles and grouts with proper protection.

A tiled surface can add an elegant and refined look to any floor or wall. Unfortunately, tiles and grouts can also be difficult to maintain without the proper protection. To combat moisture, bacteria, and general erosion, the grout should be sealed from the elements. This is where a good grout sealer can protect a tile surface for many years before it needs to be reapplied. And finding the right sealant is the key. Most grout sealers do the same basic job: seeping into the grout to fill in any spaces that are likely to host dirt, moisture, and bacteria that break down the grout over time. 

Many sealants are versatile, which means you can use them to seal the grout, tile, concrete, and other common stones for a long-lasting protective finish. Sealants come in many forms, including sprayers, gallon tanks, and tubing. Choose the type that will provide enough sealant in an easy-to-apply manner for your project.

Need help finding the best one for you? Read on to see our best sealer options to help protect your grout.

The top 7 best grout sealers on the market

If you are looking for the best on the market or if this is your first time hearing about grout sealers, you are in the right place. There are several alternatives on the market, but which ones to choose? Here are the best solutions on the market.

Also, please see the best grout removal tool on the market.

Aqua Mix Sealer’s Choice Gold Quart

Aqua Mix Sealers Choice Gold Quart

Grout is both decorative and protective, which acts as a filler to cover any space between the tiles to form a solid surface. Since grout contains some sand, it needs sealant protection to last. Sand is porous, with small holes where dirt and bacteria can stay. The best hunters block these holes as much as possible.

The Aqua Mix Sealer’s Choice Quart takes first place for its natural look and extended protection. This product is a water-based sealer that provides sufficient protection over the entire surface, including grout and tile. It also dries to a shine-free finish for a natural look. For ceramic tiles, this will provide additional protection and can be used with stones such as granite, marble, masonry, and limestone. Use it as a pre-grout sealer on your tiles for extra protection in areas such as bathrooms or kitchens.

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Black Diamond Stoneworks Ultimate

Black Diamond Stoneworks Ultimate Grout Sealer

Not all budget products will protect grout well from dirt and germs. While an inexpensive option is a good choice for larger projects or tighter budgets, you need to make sure the sealer gets the job done. The Black Diamond Stoneworks Ultimate is the best choice for this because it is intended to fight against mold growth.

The sealer is designed to repel oil and water, which can cause significant damage to the grout over time. In places where humidity is common, such as in the kitchen or bathroom, this type of protection will reduce the amount of maintenance your grout and tile will need after heavy use. The sealer will also repel food, grease, mold, and mildew to prevent harmful bacteria from growing.

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Miracle Sealants

Miracle Sealants

The challenge with grout sealers is depth. Since the sand is porous, deeper holes should be treated depending on the thickness of the grout. Most hunters use a water-based solution that stops near the surface to protect the outer layers. To achieve further, an impregnator like the 32-ounce bottle of Miracle Sealants is needed.

This sealer uses a solvent-based formula that penetrates deeper into the grout layer. The deeper penetration means extra, long-lasting protection for the surrounding grout and tile. The sealer dries to a non-slip finish, so it’s safe to walk on treated tile floors without worry. The extra protection will also prevent the formation of stains while preserving the appearance of the tile surface.

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Miracle SealantsGRTSLRAEROCS

Miracle Sealants GRTSLRAEROCS Grout Aerosol Spray Penetrating Sealers

Applying grout can be a difficult process depending on the method of application. Bottles require more time and attention, with a tool, sponge, or rag, to create a solid layer. Spray sealers are a great alternative because it’s easier to get a level, full finish on grout and other surfaces.

The 15 oz Miracle Sealants Spray uses an even pressure spray for even coverage on the surface. The formula can be applied to grout, concrete, brick, and other natural stones (if you want to have a single protective layer on the surface as well). For floors, you can use the spray indoors and outdoors, as it will withstand common moisture levels found in outdoor environments.

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Custom BLDG Products

Custom BLDG Products

Tube grout sealers allow precise control over the sealer as you work. Since their supply is often more limited than bottles and sprayers, tubes are best used for small projects or for touching up leftovers. Over time, you can keep a tube-like Custom Building Products TileLab for spot repairs to keep the sealant intact during extended use.

The tube contains six ounces of sealant, which should last a long time for occasional touch-ups or repairs. Once completely dry, the sealant will resist mold and bacteria buildup, making cleaning bathrooms and kitchens easier and safer. The sealant also provides protection against stains on the tiles.

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Tuff Duck Granite Grout and Marble Sealers

Tuff Duck Granite Grout and Marble Sealers

Large projects require more sealer to achieve a quality coat and deep penetration. Bottles of sealant per gallon are the most cost-effective for this size. With a gallon bottle, you’ll have enough to finish larger projects up to 800 square feet (and often still have leftovers). You can then store the additional sealer for later touch-ups.

Tuff Duck Granite, Grout & Marble Bottle is a versatile sealant formula designed for grout and tile surfaces. Being non-acidic, the formula is safe to use on natural stones and concrete to protect the appearance of the surface. For grout, the sealer penetrates all the way so that all-natural pores are covered for better protection against moisture and bacteria.

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Black Diamond Next-Gen

Black Diamond Next Gen

Sealant formulas vary by brand and manufacturer. Some formulas are specifically for the grout and nothing else. If you have a project where other hard surfaces need protection, a multi-purpose sealer such as Black Diamond Next-Gen Sealer may be a good alternative.

This sealer comes in a 16-ounce liquid spray bottle designed for small projects or light touch-ups. The formula is non-toxic and non-corrosive, making it safe for granite, concrete, and other stones in addition to grout. As a water-based formula, it’s also safe for food contact if you want to apply extra protection to items like granite countertops in the kitchen. Application is easy: spray and wipe off any excess.

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That’s all for now, friends. These are some of the best grout sealers. Do you have any of these products at home? Which are your favorites? Do you know any other top-quality products? Let us know. You can use the comment section below. We look forward to your comments! Thank you.