Patio Cleaning Kent

Green algae, black joints, moss from the edges, and that slippery film that makes the whole surface dangerous when it rains. None of it comes off with a garden hose. KBL Cleaning pressure washes patios across Kent.

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Different Surfaces, Different Treatment

Indian stone and natural flagstone need lower pressure and careful chemical treatment. Too much pressure blows the pointing out and damages the surface. We pre-soak these patios with an algae and moss treatment, let it dwell for 20 to 30 minutes, then wash at a controlled pressure that cleans the stone without causing harm. Block paving is more forgiving on pressure but the sand between joints washes out during cleaning, so we re-sand with kiln-dried sand after every block paving clean. Concrete slabs, porcelain tiles, and composite decking respond well to a straightforward jet wash with pre-treatment. Combine with our driveway cleaning or jet washing service. We serve all locations across Kent.

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Professional patio cleaning results showing clean grey stone paving with outdoor furniture

Patio cleaning transformation showing before condition with stained paving stones

Re-Sanding and Sealing

After cleaning, block paving patios and some natural stone patios benefit from re-sanding and sealing. Re-sanding fills the joints back up and stabilises the surface. Sealing adds a protective layer that slows down algae regrowth and makes the next clean easier and cheaper. Sealing is not always necessary. On a patio that gets good sunlight and dries quickly, algae grows back slowly anyway. On a north-facing patio surrounded by trees and fencing, sealing makes a noticeable difference to how long the patio stays clean. We will tell you whether it is worth the extra cost for your specific setup. A small patio of around 15 to 20 square metres takes between one and two hours. Larger patios with heavy moss or deep black staining can take half a day. We do not rush the pre-treatment stage. It is what determines whether the algae comes back in three months or twelve.

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