Mapei Aquaflex Roof HR

Please note, this product has a lead time of 3 - 4 weeks.

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.

Best Uses

Mapei Aquaflex Roof HR is ideal for the protection against UV rays and heat for existing waterproof roof systems made from a distilled-bitumen / polymer membrane. Mapei Aquaflex Roof HR is also suitable for protecting and waterproofing concrete surfaces, cementitious screeds, screeds made using special binders (such as Topcem, Topcem Pronto), ceramics or stone coatings.

Aquaflex Roof HR is a ready-to-use waterproofing, white product, with high solar reflectance and thermal 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 haired 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. 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.

Application

All substrates, whether they are 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 compromise the bond. Carefully clean the existing bituminous membrane to provide a clean, dry substrate. Apply Primer for Aquaflex 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. Infill the gaps between existing ceramic tiles using 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% of 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 butyltape or using Mapetex 50 (h 20), bonded 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.

The product is supplied ready to use. It is however recommended to mix the contents to perfectly blend the product. Aquaflex Roof HR must be applied with a long-haired roller or 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 and that it becomes slightly darker in colour before applying the next coat. The second coat must be applied in a criss-cross direction 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. While gradually applying the product, immediately lay the Mapetex 50 and go over the surface with a flat spreader or spiked roller to ensure it is perfectly wetted. Spread on a generous coat of Aquaflex Roof.

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