Tenax Proseal and Hydrex: The Only 2 Trusted Stone Sealers of Expert Fabricators

Protect your granite, marble, and other natural stones with a high-quality stone sealer from Italy. Tenax‘s Hydrex and Proseal are two highly efficient stone care products worth having at home. Apply any two solutions on a dry slab and see it protect from within the stone’s surface. What’s more, both products provide invisible protection against staining without affecting the stone’s appearance.

High-quality oil and water-repelling stone sealer for granites and marbles

Proseal Stone Sealer

Proseal is the best stone sealer for kitchen countertops as it shields your countertop against oil and water.

High-quality water-repelling stone sealer for granites and marbles

Hydrex Stone Sealer

Hydrex, on the other hand, is a water-repelling sealer ideal for vanity tops and other outdoor applications, such as floor tiles and wall cladding.

Curious to know how much will your counter cost?

A simple experiment on a marble tile reveals the advantages of using any of the two products in your home.

The Water Test

Before After

We placed a few drops of water, soy sauce, and cooking oil on the stone’s surface for a couple of minutes.

Later, we pat dry the surface with a piece of cloth, and here is the result:

  1. Firstly, for the unsealed marble, all three liquids have penetrated its surface;

  2. The portion applied with Hydrex has had minimal discoloration from soy sauce and cooking oil. Water, however, was quickly wiped clean;

  3. Lastly, with Proseal, the surface was virtually unaffected. The stone sealer could repel the liquids placed in the treated area.

Prevention is better than cure.

Our Review: Proseal and Hydrex


Both products provide unmatched quality of protection for granites, marbles, and even other natural stones, such as onyxes and travertines. First, Hydrex and Proseal fill the pores of the stone. Then they penetrate the surface within minutes. Finally, once absorbed, they both repel liquids from within the slab.

Unlike other brands of stone sealers, these two products do not leave a thin coating film once applied. Also, they do not alter the stone’s color and texture. They shield granites and marbles from staining without compromising any of the stones’ natural qualities.

Finally, Hydrex and Proseal are both easy to use. You can do it on your own without the help of a stone specialist. Just apply using a clean cloth or a paintbrush and let it dry. Remember: one coating is good, but we recommend applying a second layer after twenty-four hours for better protection.

Frequently Asked Questions

Most granite applications do not require stone sealing. Their surface is too dense for liquids to seep in; not even sealer would penetrate. The liquid would only sit on it.


Some granite colors, however, need regular application of sealer. As it is a natural material, each granite type will vary in porosity. Some require resealing more often than others.


If you are unsure whether you need to apply a sealer or not, drop a small amount of water onto the stone’s surface. If the water beads up, you don’t have to worry about anything. But if the water soaks into the surface, you will have to seal it.


The case, however, is not the same for marble, onyx, sandstone, and travertine. For these stones, sealing is a must as they are more susceptible to staining and etching than granite. Application of sealer should help you keep your stones looking new for the years to come.


Moreover, applying a sealer to protect your stone is more practical than getting professional help repairing or replacing your countertop or floor.

Yes, most sealers are easy to use. Reading the product instruction should make it a piece of cake.

Before applying the sealer, clean the stone with a soft cloth and a specially formulated stone cleaner. Let it dry. Ensure that no more liquid has seeped into it.

Clear the area. Wrap the fixtures with a plastic cover. And seal the stone, especially near the sink’s edge.

Natural stones require a high-quality stone impregnating sealer during installation.

Designed to be absorbed into the stone, it protects the material from the surface. Compared to a topical sealer, which creates a thin-film coating, a stone impregnator will neither turn yellow nor be peeled off since it is on the surface. It does not affect the appearance of the stone.


Sealing, however, does not offer an absolute impenetrable shield against staining. It only increases the window period of blotting time, allowing easy liquid removal should any spill or drip occur.

Darker granites will only need sealing a little often. Every year or two should suffice. They are denser than light ones. Besides, any stain is usually nearly invisible because of the stone’s darkness.


Light-colored granites, on the other hand, must be sealed yearly.


For marble, onyx, sandstone, and travertine, once or twice a year are advisable.


As a general rule, if you notice that the stone darkens when it comes in contact with water, that’s the time you should reseal.


If you notice that the stone darkens when it comes in contact with water, that’s the time you should reseal.

Engineered quartz does not require any sealing. Its surface is too compact for any liquid, even a stone sealer, to penetrate. Applying the solution will only dull your countertop’s polish.

If you are looking for a high-quality stone impregnating sealer (Proseal and Hydrex) at a very competitive price, you may visit any Stone Depot branch near you. Our slab yards are located in Laguna, Cebu, Davao, CDO, and Iloilo City. We have sealers, stone tools, and natural and engineered stone slabs for your project.

Miguel Aquino

Miguel Aquino

Miguel Aquino is the General Manager of Stone Depot, one of the Philippines' leading suppliers of granite, marble, and quartz. Since 2010, he has been in the stone industry, working for a similar company in Balintawak, Quezon City.

You can find him playing Magic: the Gathering at a hobby store every Friday night.

Franchise a Slab Yard Today!

6 thoughts on “Tenax Proseal and Hydrex: The Only 2 Trusted Stone Sealers of Expert Fabricators”

  1. My fabricator used a single coat of Hydrex on our new kitchen quartzite. I’d prefer to put on Proseal. Do I and/or should I wait to seal with Proseal?

  2. Hi, I’m looking for a white granite but has the marble design. Do you carry that kind.
    Please let me the soonest. I believe my builder
    Is getting impatient with me now.
    Thank you.

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Send us the detailed plan for your project, and we’ll give you a rough estimate within 24 hours.