Cement-Based Grout & Color-Matched Caulk

Cement-based grout is the most common type of grout and the least expensive, but needs to be sealed after installation to prevent staining.


There are dozens of grout manufacturers, each with their own collections of 30+ colors.


Cementitious grout comes in basic Sanded and Non-sanded varieties, or in a higher quality premium variety, and is a powder mixed with water during installation. 


+ Color Selection: Cement-based grouts are the most common type of grout, and as such have the widest color selection.

+ Easy to Install, Easy to Clean Up: After installation, all you need is a wet cloth or, at worst, some light scrubbing to remove grout residue from your tiles.

+ Inexpensive: Per unit, cement-based grout is the cheapest grout on the market.


- Poor Color Consistency: Many factors (including minerals in your water, how you mix the grout, humidity, etc.) can affect the look of your grout, causing inconsistencies and hazy efflorescence.

- Porosity: Of the four major grout types, this is the only one with pores, which can allow staining and bacterial growth.


- Needs to be Sealed: A penetrating sealer is recommended to protect this grout from staining and mildew.

- Brittleness: Caulking is needed for corners and edges. Cementitious grout in corners will crack and flake out over time, and can crumble if not installed properly.

Prism: A Higher Quality Cement-Based Grout

Prism is a superior cementitious grout, with a finer texture than sanded grout and better color consistency.


Prism can be used in grout lines ranging from 1/16" to 1/2". Despite having a slightly sandy texture, Prism can be used with glass and soft marbles, unlike sanded cement grout.


It is more expensive than basic cement-based grout, and still requires a sealer. 


However, you won't have efflorescence or color splotches with Prism. This is an ideal grout for use with marble, travertine, limestone, and slate. Seal your natural stone before you grout with Prism for easier grout clean up and to prevent the grout from discoloring the stone, then add another coat of sealer to everything (grout and stone) after the Prism grout has cured (3 days).

Seal your Grout from the Inside Out

Instead of mixing water with your cement-based grout, mix in Grout Shield. Grout Shield bonds with the cement in such a way that you'll never have to seal your grout again. 


We stock the 70oz bottle to go with our 17lb boxes of Prism. Mix 1 bottle into every one box's worth of grout powder (mixing up only half of that 17lb box? Only use half of the bottle).


One bottle of Grout Shield + one box of grout can cost about as much as one gallon of pre-mixed grout, but cement grout has a longer working time, will cover more area, and cement grout residue is easier to clean up.

Coverage Calculator

Need to figure out how much grout you'll need? Check out Custom Building Product's helpful Coverage Calculator.

Color Matching Caulking

Our acrylic latex caulks are available in the same colors and textures as our grouts, and as such will blend right in!

It's a good idea to use caulk in any place where your tile meets a surface that has some movement (such as a bathtub), or where two different planes meet (such as a countertop and backspash). If you use grout instead of caulking in these areas, over time cracks will appear.

We recommend using the matching silicone caulk for wet areas, such as in a shower or tub. It repels water to an extent that acrylic latex caulk can't, but is harder to apply and clean up (so there's no need to use it in areas that aren't exposed to moisture).


Read more in our colored caulking blog post!

Grout and Natural Stone: Seal it or Stain it!

Most natural stone tiles and mosaics are porous. The loose pigments in cement-based grouts are blended into the grout and can sink into these pores and stain the stone. By sealing your stone before grouting, you're protecting the stone from being tinted by the grout pigments. Grouts without pigment-based color (pre-mixed and epoxy) will not stain natural stone.

These samples are all unsealed Philadelphia Travertine. You can clearly see how the grout pigments have tinted the stone, changing the overall look of the travertine.
These samples are all unsealed Philadelphia Travertine. You can clearly see how the grout pigments have tinted the stone, changing the overall look of the travertine.

After the grout is installed, wait 3 days for the grout to cure, then apply sealer to everything. The stone will get a second coat and the grout will be protected from stains.

Don't like your grout color? Change it!

Use AquaMix's Grout Colorant to change the color of pre-existing grout!


Click here to read our article about grout colorant.


You can also use Miracle's Grout Pens to quickly and cleanly recolor grout to one of three colors:  white, buff, and gray.

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