Travertine cleaning and sealing in North Bondi

Travertine around North Bondi pools and terraces tends to age in the same sequence. The holes in the stone lose their filler and fill with sand and grime. Coping beside the water darkens and stays damp. Then the surface along the edges turns rough and pitted as salt crystals grow inside the pores. Ocean-front homes near Ben Buckler see this faster than most, because spray settles on stone that is already wet from the pool. A deep clean, refilling and sealing at the early stages keeps the original pavers in place and avoids the cost of lifting and replacing pieces later.

Travertine is a form of limestone, so acid has no place on it. Many pool-shop scale removers and general patio cleaners are acidic and leave dull etch rings that only honing can remove. Our technicians use alkaline cleaners made for calcium-based stone, work them into the holes using a slow machine with soft pads, and rinse gently. A cover goes over the pool first, and run-off is collected rather than allowed into the water or onto the garden. Any etching is pointed out to you on a walk-around at the start, because that is a honing job and we prefer to tell you before the work rather than after.

Once clean, the travertine needs to dry completely, which on an exposed terrace can take a couple of fine days. We fill open holes with a colour-matched filler, then apply a penetrating sealer formulated for salt exposure in thin coats, wiping off any excess so nothing stays on the surface as a film. The stone keeps its texture and grip under wet feet. You will know before we leave how long the pool and outdoor furniture should stay off it, and the product and date go on your job record. From then on, sprinkle a little water on the coping each summer: if it darkens and soaks in instead of beading, the sealer needs renewing.