Deciding whether to seal paving

Sealing a Patio: Worth It or Not?

Sealing is genuinely worthwhile on some paving and pointless on others. The deciding factor is porosity.

Applied at the wrong time or to the wrong surface, a sealer causes more problems than it solves.

Patio and Landscaping work by Gardenscape in Essex

Where sealing helps

Porous natural stone — particularly sandstone and limestone — absorbs spills, algae and organic staining. A quality impregnating sealer reduces absorption, slows algae and makes routine cleaning far more effective.

Concrete paving benefits similarly, and colour-enhancing sealers can lift a faded surface.

Where it does not

Porcelain is effectively non-porous, so sealing the slab itself achieves nothing. Sealing the joints can still be useful.

Sealing a damp patio, or one that has not fully dried after washing, traps moisture and causes a hazy bloom.

Practicalities

Sealers need renewing periodically, typically every few years depending on product and exposure. Some change the finish noticeably, so always test an offcut or a hidden area.

The right sequence is clean, allow to dry thoroughly, repoint if needed, then seal in dry, mild weather.

Frequently asked questions

Does sealing stop weeds in joints?

It helps bind the joint surface but a proper jointing compound is the real answer.

Will a sealer make my patio slippery?

Film-forming sealers can; impregnating sealers generally do not, and anti-slip additives are available.

How soon after laying should I seal?

After the paving and jointing have fully cured and dried — usually several weeks.

Want your patio protected?

We clean, repoint and seal patios as a package.

Book a patio refresh Call 07535 661664