Model # 8500

Internet #205212675

Ghostshield 1 gal. Invisible Penetrating Water Based Concrete and Masonry Sealer Plus Water and Salt Repellent


1 gal. Invisible Penetrating Water Based Concrete and Masonry Sealer Plus Water and Salt Repellent

$8340 /gallon
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Product Overview

An industrial-grade, water-based, silane/siloxane engineered to reduce water and moisture intrusion, while protecting concrete or masonry substrates from chlorides and deicing salts. Siloxa-Tek 8500 is our favorite product to treat nearly any application. A proprietary blend of silane/siloxanes, this clear penetrating sealer not only prevents deicing salt and freeze-thaw damage, but its hydrophobic nature resists moisture intrusion and vapor transmission. This is the go to choice to seal any concrete, brick, or masonry based substrate especially driveways, basements, patios and garages.

  • Prevention from freeze-thaw attack and ASR by preventing the ingress of water, prevents further damage to reinforced concrete by limiting the substrate water content, chloride and other aggressive salts
  • Provides increased protection as a hydrophobic barrier to prevent future penetration of water and soluble aggressive agents through a crack, provides protection from spalling and pitting as a result of aggressive salts and chlorides
  • Alkali resistant, freeze-thaw/de-icing salt resistant, UV resistant, reduces vapor transmission, water beading (water repellent effect), reduction of dirt pick-up, reduces risk of efflorescence, protection against micro-organism growth
  • Supplied ready to use, easy to apply, effective penetration depth, seals pores and capillaries while remaining breathable, no change in appearance of the substrate, the treated surface does not become glossy, tack free, durable finish, no formation of harmful by-products, low VOC's
  • Online Price includes Paint Care fee in the following states: CA, CO, CT, ME, MN, OR, RI, VT

Info & Guides

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Container Size
1 GA-Gallon
Coverage Area (sq. ft.)
250 ft²
Product Size (oz.)


Application Method
Brush,Paint Sprayer,Roller
Coating Product Category
Clear, Natural, Slightly Enhanced
Dry to the touch (hours)
Maximum hydrostatic pressure (lb.)
Number of coats recommended
Paint/Stain Base Material
Paint/Stain Key Features
Dries Clear,Mildew Resistant,Moisture Resistant,Sealer,UV/Fade Resistant,Waterproof
Paint/Stain/Waterproofer Product Type
Masonry, Stucco & Brick
Product Type
Substrate/Surface Use Type
Time before recoating (hours)

Warranty / Certifications

Manufacturer Warranty
Manufacturers Defects Warranty

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Customer Questions & Answers

Can this product be used to seal an interior block basement wall?

Asked by: JOHN
GhostShield recommended that I first prime my cinder block walls with Sil-Tek 3500 before applying the 8500.
Answered by: rsdk
Date published: 2016-08-24

Application Temperatures

I have a set of concrete stairs that were parged and patched 2 1/2 weeks ago. I am most interested in applying 8500 sealer now to prevent any water intrusion that might freeze and cause spauling. Present daytime temperatures are running 45-50.
Asked by: John
Concrete sealer is a chemical mixture that contains particles of chemical sealant suspended in either water or a chemical solvent. Either way, the sealers have to be stored and applied at certain temperatures to be at their most effective. To begin with storage, concrete sealers should not be stored frozen, nor should they ever be at risk of freezing. A frozen concrete sealer will feature less effective particles of chemical sealant, rendering if significantly less effective when it actually is applied (though you may not be able to tell the difference). As many concrete sealers are water-based, which are undoubtedly better concrete sealing options, they are also at risk for freezing . The surface of the concrete and the environment of the room in which the concrete sealer is being applied should not dip below around 50 degrees Fahrenheit. Below 50 degrees Fahrenheit, the concrete is too cold to allow the concrete sealer to penetrate or bond to the surface effectively, depending on which type of sealer you are using. The concrete and the room in which it is being applied should not exceed approximately 90 degrees Fahrenheit either, nor should it be applied in direct sunlight.
Answered by: HAPPYAGAIN
Date published: 2016-10-18

I have a leaking second floor balcony with ceramic tile will this product work to stop the leakage?

Asked by: Jotto
While our Siloxa-Tek 8500 can help to seal grout between tiles, at this time we do not have a sealer suitable to protect ceramic tiles.
Answered by: KreteTek
Date published: 2017-03-23

What product you may recommend for limestone?

What product you may recommend for limestone?
Asked by: Ruslan
For water repellency and salt protection, our Siloxa-Tek 8500 is a great choice. Alternatively, for all the same benefits with added oil resistance, you could use our Siloxa-Tek 8505. Both of these sealers will absorb into the surface without changing the appearance, and will continue to provide excellent protection.
Answered by: KreteTek
Date published: 2017-02-01
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Customer Reviews

1 gal. Invisible Penetrating Water Based Concrete and Masonry Sealer Plus Water and Salt Repellent is rated 4.5 out of 5 by 28.
Rated 5 out of 5 by from We recently purchased our first new home and wanted to make sure we sealed the driveway, small wa... We recently purchased our first new home and wanted to make sure we sealed the driveway, small walkway and stairs leading into our house at our builders suggestion. He recommended a couple of options and this was one of them. We are not the handiest people out there but this was one of the easier projects we did. The sealer was concentrated, we mixed it with 4 gallons of water and opted to roll it onto our concrete as opposed to spraying it as also suggested. We worked in small areas sealing each section twice before doing the next section. The sealer dried completely invisible however anytime it got wet with snow and it melted, throughout the winter you could clearly see that something was there protecting the concrete. Great product, highly recommend it.
Date published: 2017-03-26
Rated 4 out of 5 by from Worked exactly as expected Rolled the product on and went on just as expected. It did not tent or stain the stone and actually couldn't tell anything was on after a couple hours. When it rains it just beads up though would say it doesn't completely avoid stains...but overall very much like product.
Date published: 2017-07-04
Rated 5 out of 5 by from I bought the sealer to help with a house that... I bought the sealer to help with a house that is built underground. So far it seems to be holding up to some small areas that water was seeping through the cinder block walls. Time will tell how well the product holds up.
Date published: 2017-06-27
Rated 5 out of 5 by from Does what it says and is easy to use. Happy with the beading of water. Used on brand new driveway... Does what it says and is easy to use. Happy with the beading of water. Used on brand new driveway. Just follow the instructions. Hope it lasts as long as it states. Keeping the driveway looking brand new!
Date published: 2017-05-27
Rated 1 out of 5 by from Did not work!!!! This product does not fit the bill that the company claims it can do. I will not purchase this again. Fool me once shame on you, fool me twice shame on me!!!
Date published: 2017-05-30
Rated 5 out of 5 by from Ghostshield Went on clear and dry on the surface with no visible difference . That's what I was looking for.
Date published: 2017-07-18
Rated 4 out of 5 by from 4 Star Review Rating provided by a verified purchaser
Date published: 2017-04-05
Rated 5 out of 5 by from Great sealer!! After cleaning the concrete and letting it dry for a day the Ghostshield went on easily and evenly with a pump sprayer. It does a great job of repelling water as it all beads up and runs off. Icy spots in the MN winter are a side affect due to the fact that it repells water so well that it freezes up in beaded up form during freeze thaw cycles. Seals concrete well! Worth the price tag so far.
Date published: 2016-12-09
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