Geal Idroblock


Water repellent – Anti-damp – Anti-mould. Water repellent for all kinds of absorbent mineral materials: cotto, terracotta, bricks, plaster, concrete and aggregates. Stops and controls water seepage.


Apply pure on cleaned surfaces, dry or uniformly wet, with a paintbrush or liquid spreader.‎ Distribute it uniformly and remove possible excess. Avoid application on very hot or very cold surfaces (over 40 °C or below 5 °C) Let it dry for 24/48 hrs at least before applying a second coat and following Geal’s protection treatments such as Protect, Basoil, Unix or finishing Woplus. If a pre-treatment before floor grouting has been done, repeat application after grouting and acid wash.
A preliminary dosage test is always adviced.


– Keeps long-lasting action
– Creates an anti-efflorescences and anti-mould barrier
– Does not film nor alter the look of treated material
– Makes easier the heavy-duty cleaning from cement and grouting
Indicative coverage: 5-10 sq.‎m per litre


1L – $89.48 + GST

5L – $460.78 + GST


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Barrow and Stone provides New Zealand with the very best Natural Stone landscape paving the world has to offer. Landscaper William Shaw and garden designer Sam de Vries have a collective of 15 years in Landscape design and construction from two world renowned cities for landscaping London and Perth. Barrow & Stone are driven by passion for creating beautiful united outdoor spaces with impeccable vision, specifically around Natural Stone Paving.


Download the Safety Data Sheet

Safety Data Sheet