Penetrating vs Topical Concrete Sealer: Which One Should You Use?

Choosing the wrong type of sealer is the #1 reason homeowners are disappointed with their results. Here's a clear, simple breakdown of penetrating vs topical concrete sealers.

Topical sealers

Topical sealers (acrylic, epoxy, polyurethane) sit on top of the concrete. They give a glossy or wet look. The downside: they peel, flake, yellow and need to be re-applied every 1–3 years. Many also trap moisture, which can cause concrete to crack.

Penetrating sealers

Penetrating sealers (silanes, siloxanes, stone impregnators like Nanoprotect) absorb into the concrete itself. They don't change the look, don't peel and protect from inside the stone — for years.

Which one should you use?

For most homeowners — driveways, patios, pavers and walkways — a high-quality penetrating sealer like Nanoprotect is the smarter long-term choice. It's lower maintenance, longer-lasting and looks natural.