Hydro-M: the smart protection for a clean, dry and durable rooftop terrace

That rooftops are taking on more and more functions is something we’ve known for a long time: living space, outdoor room, meeting point, public route. This makes the demand for materials that are reliable, long‑lasting and low‑maintenance greater than ever. Hydro‑M fits this need perfectly. It is an invisible protective layer incorporated into the concrete slab during production, ensuring long‑term performance without the need for extra treatment.

What is Hydro-M?

Hydro‑M is a thin, invisible protective layer that is integrated into concrete slabs during the production process. Because it forms part of the slab itself, it does not wear away, and its effectiveness is retained for many years. At Zoontjens, you will find Hydro‑M in the Dreen®Magna and Dreen®Robusto slabs.

What are the benefits of Hydro-M?

• Less water absorption, faster drying
  Slabs with hydro M absorp much less water. Residual surface water evaporates quickly, and with minimal moisture uptake into the slab, a safer walking surface is re-established more rapidly.  It also improves walking comfort, a major advantage for heavily used rooftop terraces and public spaces.
• Reduced risk of efflorescence and algae growth
  A well‑known occurrence with concrete products is efflorescence: white marks caused by moisture. Hydro‑M significantly reduces this, as moisture penetrates far less deeply into the material. Algae and moss also have less opportunity to grow, leading to drastically reduced maintenance.
• Low‑maintenance and dirt‑repellent
  Because water does not penetrate as easily, dirt adheres less quickly. As a result, the slabs are easier to keep clean and stay attractive for longer.
• Durable, colour‑fast appearance
  Hydro‑M protects deep within the core of the slab. This helps preserve the colour over time, keeping the slabs looking fresh and well‑maintained year after year.

Why is Hydro-M ideal for rooftops?

Hydro‑M is particularly valuable on rooftop terraces, where you want the outdoor space to be quickly usable and safe to walk on after rain. For owners and managers of large semi‑public rooftops, this is a major advantage: maintenance becomes easier and more cost‑effective. Altogether, slabs with Hydro‑M are a smart and sustainable choice for any rooftop terrace.