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Siloxane Based Concrete Sealers 5/5 (1)

Siloxane Concrete Sealers

Siloxane Concrete Sealers

Siloxane Based Sealers are Best for Poured Concrete, Brick and all Masonry Surfaces.

Siloxane, not to be confused with Silicone, is a chemical that is used to formulate siloxane based concrete and paver sealers. Siloxane based sealers can be water or solvent based although the water-based blend of siloxane sealers are lower in VOC and more compliant in certain states.

These siloxane sealers are popular among homeowners because they are user friendly and easy to apply. They penetrate into the surface and react to cause a hardened barrier within the substrate pores. They do not stay on top of the surface like other sealers

The siloxane based sealers,  penetrate up to a ¼ inch deep to create a durable barrier against moisture and liquid absorption. It is best used on concrete, pavers, bricks, stone, retaining walls, and more. The clear, natural finish does not affect the appearance of the surface.

Other types of these sealers are a hybrid blend of siloxane and silanes. These include SuperSeal M and Masonry Saver Heavy Duty Water Repellent, also known as Defy. With the 100% breathable capabilities of a siloxane and silane based sealer, they are not prone to peeling or flaking like other moisture trapping sealers.

Applying siloxane based sealers is easy enough for most any homeowner to do. They can be applied using a brush, roller, or for larger areas a pump sprayer can be used. They may appear milky when they are first applied but then dry clear within 20-30 minutes.

Substrates sealed with siloxane based sealers will repel water within one day and will not allow moisture penetration. Locking out moisture is the key to maintaining paver and concrete surfaces. When water is allowed to be absorbed into substrates, it can cause a wide array of damage.

Salts and de-icing chemicals are extremely hard on concrete surfaces. Oil and other spills that penetrate can leave permanent staining. In colder climates, freeze/thaw damage is a huge concern. Sealing your hardscape surfaces with a siloxane based sealer will prevent these unwanted occurrences from happening by repelling moisture and stains to leave your surfaces looking new.

The siloxane/silane/silox sealer types react chemically with the concrete, creating an internal seal. Most will last 5+ years. Excellent choice for sealing and water repelling all exterior concrete surfaces without changing the appearance of the substrate.

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19 responses to “Siloxane Based Concrete Sealers”

  1. Mr. Muto says:

    3 Questions

    1. I have a paver driveway (Heritage paving stone) (slate blend) in Pennsylvania, we use polymeric sand – what would be a good sealer to use to keep the natural look? The paver company recommends Alliance Gator Seal Natural Look.

    2. I have an outdoor fireplace on a concrete deck (which the deck is rubber membrane) and the hearth stone (only part that does not have membrane) is Indiana limestone, and water is being absorbed in the stone and leaking below the deck. Can you recommend a sealer that would stop the water?

    3. People I have asked said that a siloxane and silanes based sealers are the best…such as Armor SX5000 Concrete Sealer and others say V-seal 102.

    Can you help… Thanks

    • Concrete Sealer Help says:

      A silane/siloxane sealer would work for all of these. V-seal is way too expensive. They just repackage under their name and do not manufacturer at all. Look ay these two:

      SuperSeal M Water Repellent and Masonry Saver Heavy Duty.

  2. Heather Schnurr says:

    We mistakenly applied a siloxane polymer concrete sealer over another sealer that was on our concrete. The concrete is acid etched and is inside. Needless to say the sealer just sat on top of the old sealer and now we are trying to remove the siloxane polymer without much success. Any ideas for us please. Thank you in advance

    • Concrete Sealer Help says:

      We have never tried to remove a siloxane sealer but have heard of a stripper made by Prosoco that might work. Give them a call for help.

  3. CRBman says:

    I have a steel troweled garage floor and am trying to decide on what type of sealer to use. I have narrowed it down to a penetrating sealer but amd not sure if I should use a silane or siloxane sealer to provide me with the best protection from salt, oil and gasoline. Can you give me any advice? Thanks

  4. Jun says:

    How about Armor SX5000 ? Is this a better product?

    • MommyX3 says:

      SX5000 has 40% active materials, and it is approved by the Department of Transportation. There are a lot of great products on the market, which one you go with depends on your application, preference, and budget.

    • Jon says:

      I would highly recommend staying away from Foundation Armor SX5000. Take a look at my negative experience, complete with photos, from my review of my (verified) purchase on Amazon, here: – I hope that it helps someone else.

  5. Jim says:

    which is better for a brick home, wqter base or solvent base

  6. elizabeth gregg says:

    I have a contractor that applied the Siloxane Modified Methyl Mathacrylate sealer on my courtyard patio. The finish was uneven and looked terrible. He has now applied more of the sealer and applied a spray that adds a look of texture. It still looks terrible and uneven. I can send pictures if that will help. I am concerned that I have paid $4000 for a finish that now looks terrible. He had tried to roll the sealer on but he left roller marks and then he tried the sprayer but achieved an uneven and fake look. I am wondering if I can paint over the sealer to try and get a smooth even finish. HELP!

    • Concrete Sealer Help says:

      Not sure on this issue. I would contact the manufacturer of the sealer you used for advice. Painting would be a last resort.

  7. bub says:

    I applied Behr Premium Protector & Waterproofer to my exposed aggregate concrete pool deck two years ago. It worked well, but I thought I was supposed to apply it every 2 years. When I reapplied it after 2 years it did not penetrate the concrete and has now discolored some of the deck, i.e, there are dark pathches on the deck where the product did not penetrate the concrete. I've tried pressure washing the dark areas , but that has not worked. Is there a product I can use to just remove the sealer on the surface of the concrete so that the dark areas will disappear?

  8. JS says:

    I am confused, I thought I read that for a veneer brick home, you should ONLY apply waterproofing and not a sealer. What really is the difference?

  9. Marta says:

    My brick basement walls were painted on the inside with a white sealant more than 50 years ago. Ground level is near the ceiling. I suspect i may have a high water table during severe storms. The sealant is intact in the dry areas, but has failed where water pressure forced it's way in and has caused serious effervescence. Upon reading the reviews, I realized that most of the situations are to prevent water from getting into the brick or concretein the first place. I have the opposite problem. I want to prevent the water from leaking through the wall and getting into the basement. Digging up the foundation to seal it from the outside is not an option. Is there anything I can apply to the bricks from the inside that will help?

    • Concrete Sealer Help says:

      Sealers will not help with this and cannot be applied over the coating you have. Maybe Drylok will work but we do not use it.

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