The best type of sealer to use on a concrete sidewalk is a high solids silane siloxane water repellent sealer. Silane-siloxane sealers will repel water and other liquids from the surface, helping to prevent a variety of issues including:
- Freeze thaw and spalling damage.
- Salt damage to concrete.
- Staining caused by the absorption of water and other liquids.
- The growth of mold, mildew and fungi on the surface.
Aside from stopping and preventing a variety of issues, there are other benefits to using a silane siloxane water repellent, including:
- Silane siloxane sealers work entirely below the surface and will not change the look or color of the concrete.
- Silane siloxane sealers will not change any of the surface characteristics of the concrete, including slip resistance.
- Silane siloxane sealers are very easy to apply and high solids formulations will last for years.
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