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🛡️ Seal in strength, keep moisture out — your concrete’s new best friend!
Ghostshield Siloxa-Tek 8500 is a premium water-based concrete sealer that penetrates deeply to form a durable, vapor-permeable hydrophobic barrier. Designed for a wide range of mineral surfaces, it prevents water intrusion, mold, mildew, and radon spread while maintaining breathability. Trusted by professionals and DIYers alike, it offers long-lasting protection with easy spray application.









| ASIN | B00H6QT28M |
| Best Sellers Rank | 198,769 in DIY & Tools ( See Top 100 in DIY & Tools ) 641 in Gutters & Accessories |
| Brand | Ghostshield |
| Compatible Material | Ceramic |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,313) |
| Global Trade Identification Number | 00855849005040 |
| Item Form | Liquid |
| Item Weight | 9.08 Pounds |
| Manufacturer | GHOSTSHIELD Siloxa-Tek 8500 |
| Manufacturer Part Number | 8500 |
| Material | Silicone |
| Model Number | 8500 |
| Style Name | Compact |
| Surface Recommendation | Tile |
| UPC | 855849005040 |
| Water Resistance Level | Water Repellent |
N**S
Very good product super easy to use with a spray. highly recommend it.
S**W
Used on a pool deck for a saltwater pool. Amazing results, even with one coat. Take your time to make sure you get good coverage. I used a sprayer. Water repellency is amazing and lasts a season even in high traffic areas
S**A
Years ago, I used Thompson water sealer. The product changed over time; was milky and waxy when applied. I tried this product instead and have used it twice. The first time was for my chimney, which would leak when hit with high winds and driving rain. It sealed superbly; no leaks *at all*, ever. Then I purchased more to seal a concrete pad, and some touch up the chimney just in case. It's very easy to apply with a simple pump sprayer and performs exactly as advertised. This product is a winner; hope they don't change a thing about it.
B**Y
I used it to seal my newly built 24’ x 24’ garage, it requires 2 but i wish i bought to 3 to fully saturate during application. Its true ghost shield, when it dries you didn’t know it’s there. No strong smell, no film on the surface that makes slippery. Only one way to find out this winter what this sealer claims. I recommend use a 3/8” - 1/2” thick roller.
A**R
Application was easy for a novice using a roller and went on even, covering my patio in two coats as instructed. So far has been good for water repellant and dirt cleanup, and did not change the color or sheen of my concrete. Would probably rate a 5 , just need to see how it goes after a few more months.
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