Mapei - Aquaflex Roof HR is a reflective white fibre-filled liquid roofing membrane in water emulsion with high solar reflectance and thermal emittance with a solar reflectance index (SRI) of 105.

Characeteristics

Aquaflex Roof HR is a ready-to-use waterproofing, white product, with high solar reflectance and thermal emittance, with a solar reflectance index (SRI) of 105, for external applications made from synthetic resins in water dispersion, and when dry forms a continuous, flexible waterproofing membrane.

Aquaflex Roof HR is resistant to all atmospheric conditions and UV rays, and guarantees long-lasting protection for the substrate.Aquaflex Roof HR is easy to apply using a long-piled roller, brush or spray on horizontal, sloping or vertical surfaces. Once dry, Aquaflex Roof HR forms a strong, flexible, tack-free dry surface, suitable for occasional light foot traffic.

Thanks to its flexibility, Aquaflex Roof HR will withstand normal expansion/contraction stresses caused by temperature variations and vibrations.

Thanks to its high reflectance index, Aquaflex Roof HR helps lower the working temperature of roofs and guarantees good energy performance properties of all the layers of the roof.

Aquaflex Roof HR lowers the surface temperature of the roof by more than 50% compared with a dark-coloured covering.
Thanks to its SRI value of 105, Aquaflex Roof HR helps qualify for LEED credits by reducing the heat island effect of roofs.

Aquaflex Roof HR complies with the principles defined in EN 1504-9 (“Products and systems for protecting and repairing concrete structures: definitions, requirements, quality control and conformity assessment. General principles for the use of products and systems”) and
the requirements of EN 1504-2 coating (C) according to principles PI, MC and IR (“Concrete surface protection systems”).

Application

Preparation of the substrate

All substrates, whether new or old, must be sound, clean, dry and free of all traces of oil, grease, old paint, rust, mould and any other material which could affect adhesion.

Carefully clean the existing bituminous membrane to provide a clean, dry substrate. Apply Aquaflex Primer by brush, with a roller or by airless spray.

Concrete and in general mineral substrates must be sound and dry with no rising damp. Any loose parts must be removed.All wax, water-repellent treatments, etc. must be removed from the surface of ceramic substrates with a suitable detergent and/or by sanding.

Any hollows in the surface must be repaired with Mapeslope. Fill any gaps between ceramic floor tiles with Adesilex P4 before applying Aquaflex Roof HR. Apply Eco Prim Grip on non-absorbent ceramic substrates, while on any other type of substrate apply Aquaflex Roof HR used as primer diluted with 10% water.

Before applying Aquaflex Roof HR, pay particular attention to the expansion joints and the fillets between horizontal and vertical
surfaces, which must be waterproofed using Mapeband Easy, rubber tape sandwiched between two layers of non-woven fabric or Mapeband SA, self-adhesive butyl rubber tape, or by bonding Mapetex 50 (h 20) to the substrate with Aquaflex Roof HR. Structural joints must be waterproofed with Mapeband TPE bonded in place with Adesilex PG4. Use a suitable kit from the Drain range to seal any drains.

Preparation of the product

The product is supplied ready-to-use, but mixing before use is recommended so that it is perfectly blended.

Application of the product

Aquaflex Roof HR must be applied with a long-piled roller, brush or by airless spray. Apply two dry coats of Aquaflex Roof HR
around 0.4-0.5 mm thick each. Wait until the first coat is completely dry before applying the next coat. The second coat must be applied
crossways with respect to the previous coat.The dry thickness of Aquaflex Roof HR must never be less than 0.8-1 mm.

If the substrate has micro-cracks, insert Mapetex 50, non woven polypropylene fabric between the two layers of Aquaflex Roof HR.
Spread on a generous coat of Aquaflex Roof HR. Spread a generous coat of product on the substrate, and while gradually applying the
product, immediately lay Mapetex 50 and go over the surface with a flat spreader or spiked roller to ensure it is perfectly wetted.

When the first coat is completely dry, spread on a second coat of Aquaflex Roof HR to cover completely Mapetex 50. Protect the Aquaflex Roof HR membrane from rain until it is completely dry.