Stamped Concrete Sealing in New Hampshire

Why Sealing Matters

The sealer on your stamped concrete patio does three things: it protects the color from UV fading, it protects the surface from water and stain penetration, and it enhances the visual depth of the stamp pattern. Without sealer, the concrete absorbs water — and in New Hampshire, water that gets into concrete and freezes will spall and crack the surface.

When to Reseal

In New Hampshire, plan to reseal every two to three years. The frequency depends on sun exposure, foot traffic, and the type of sealer used. A patio in full sun will need resealing sooner than one in shade. A high-traffic patio will show wear faster than a rarely used one. We'll tell you what to expect based on your specific patio.

Signs It's Time to Reseal

• Water no longer beads on the surface — it absorbs into the concrete
• The color looks faded or washed out compared to when it was new
• The surface feels rougher or shows visible wear in high-traffic areas
• You see small pits or spalling on the surface

What Happens If You Don't Seal

Unsealed stamped concrete in New Hampshire will fade, stain, and eventually spall from freeze-thaw. Water gets into the surface, freezes, expands, and pops small pieces of concrete off the surface. Over a few seasons, the patio will look worn and weathered — and the damage is harder and more expensive to fix than regular resealing.

Avoid Salt-Based De-Icers

Even with a good sealer, salt-based de-icers can damage the surface. Use sand for traction instead. This is especially important in the first winter after the pour, while the concrete is still curing.