A seal protects and preserves the concrete block

When concrete blocks are laid on the ground, a seal protects against the formation of traces of dirt and the growth of moss. Other effects include a higher frost resistance and greater ease of care. Concrete block walls rarely need a seal.

Advantages of a seal

You can test whether the sealant you have selected matches your concrete block on a single block. Apply the agent according to the manufacturer's instructions and let water run over the surface after drying. The water should bead off, similar to a waxed metal surface.
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