Silane-Siloxane water repellent sealers penetrate into the surface where they chemically react to form a hydrophobic barrier within the pores. The hydrophobic barrier will cause water and other liquids to bead off the surface, reducing damage and deterioration caused by water absorption such as cracking, spalling, pitting, staining, mold and mildew, and efflorescence.
Silane-Siloxane Water Repellent Sealer Reviews
The best Silane-Siloxane water repellent sealer reviews are as follows:
- Armor SX5000 Concrete Sealer Review (average 4.8 star review)
- Siloxane PD Concrete Sealer Review (average 4.5 star review)
- Eagle Natural Seal Review (average 4.8 star review)
- Armor SX5000 WB (average 5 star review)
While all Silane-Siloxane water repellent sealers will cause water and other liquids to bead off the surface, they will vary greatly when it comes to life and performance. The main factor behind this difference is the solids content.
Most in-store sealers will contain a 2-8% solids content which means that only 2-8% of the formula is active material. The rest is either water or solvent. Low solids Silane-Siloxane sealers can be purchased at any hardware store and are usually available for $150 for a 5-gallon pail or less. The issue with low solids solutions however is that they aren’t designed to last longer than 1-2 years. After that time period, you will notice that water is just as easily absorbed into the concrete as it would absorb through unsealed concrete. If you want something that provides a little more protection, and lasts significantly longer, then you want a higher solids solutions. 20-40% solids solutions are very common for use on both residential and commercial applications. They provide better protection and a longer life.
Water vs Solvent Based Silane-Siloxane Water Repellent Sealers
The primary difference between a water based silane siloxane sealer and a solvent based silane siloxane sealer is that one is carried by water and the other solvent. Both types of sealers offer the same chemical reaction, the same life, and the same level of performance. Water molecules are slightly larger than oil, but on most applications the difference won’t be noticeable.
The best silane-siloxane water repellent sealer will depend on if you have a preference of water or solvent based.
