Siloxa-Tek 8500 Ultra Concentrate - 1 Gallon (Makes 5 GALLONS) Penetrating Concrete

Ghostshield Siloxa-Tek 8500 Ultra Concentrate is a water-based silane and siloxane impregnating sealer designed to protect masonry and concrete from moisture intrusion. Because it arrives as a 1-gallon concentrate that mixes to make 5 gallons of usable solution, it is well suited for homeowners and contractors tackling projects like driveways, garages, basements, patios, and pool decks. It works by sinking deep into the pores of concrete, brick, pavers, and stone rather than sitting on top.

Because the formula is non-film forming and breathable, it provides long-lasting protection without the risk of peeling, flaking, or delaminating over time. It maintains the natural appearance of the substrate without changing the aesthetic or surface profile, which ensures the treated area remains non-slick. The formula is UV stable, resists direct sunlight degradation, and sheds wind-driven rain while producing a visible water-beading effect.

For cold-weather climates, this D.O.T. approved sealer provides critical defense against surface breakdown caused by chlorides and deicing salts. By limiting water penetration, it helps mitigate freeze-thaw damage, pitting, spalling, and cracking. Applying the product is straightforward, as it can be put down with a basic garden sprayer, paint roller, or brush, covering up to 250 square feet per gallon per coat.

There are a few practical limits to keep in mind. As a concentrate, you must mix it with water prior to use rather than pouring it straight from the jug. In addition, while vertical applications can last up to 10 years before requiring reapplication, the manufacturer notes that this specific lifespan applies when installed by a certified applicator.

Verdict: Ghostshield Siloxa-Tek 8500 is an excellent choice for anyone looking to protect concrete, brick, or stone from water and salt damage without altering its natural look or traction. It offers strong commercial-grade protection in an easy-to-apply concentrate for residential and commercial surfaces alike.

A great fit if you:

• Need to protect driveways, patios, or pool decks from water, deicing salts, and freeze-thaw cracking
• Want a penetrating sealer that keeps the natural look and non-slip texture of your stone or concrete
• Prefer a water-based, low-VOC formula that will not peel, flake, or degrade under direct sunlight
• Have large areas to cover and want the convenience of a 1-gallon concentrate that yields 5 gallons

Consider something else if you:

• Want a ready-to-use liquid that requires no measuring or dilution before application
• Prefer a topical, film-forming coating that leaves a high-gloss or wet-look finish

What surfaces can this sealer be applied to?
It is designed for concrete, pavers, brick, and stone surfaces, including driveways, garages, basements, patios, and pool decks.

Will this sealer change the look or grip of my concrete?
No, it leaves the original natural appearance intact and does not change the surface profile, ensuring the area remains non-slick.

How much area does one gallon cover?
The product covers up to 250 square feet per gallon per coat.

How is the sealer applied?
After mixing the concentrate into 5 gallons of solution, it can be applied using a sprayer, roller, or brush.