GRP Waterproofing

 The “Cool” GRP waterproofing system is considered as one of the most popular, robust, and sought-after methods of waterproofing due to the various characteristics and attributes of its composition: glass (fibre) reinforced polyester resin. 

Its cold application, performed without bulky tools by Nabridas technicians trained for over 25 years, creates a continuous, watertight barrier against stagnant water. The GRP does not deteriorate, prevents water infiltration, and requires less maintenance compared to other waterproofing systems.

The GRP waterproofing system is ideal for a wide range of applications in the residential, industrial, and commercial sectors, including :

– Flat roofs and balconies

– Old asphalt membranes

– Concrete tanks and vats

– Terraces and walkways

Information sheet : download here

Key Features

• Cold applied—no heat or naked flames
• 15-year warranty
• Quick curing: fast application rate
• Completely seamless—no joints or seams
• UV- and chemical-resistant
• Fully reinforced and flexible
• Suitable for flat (zero-fall) / pitched roofs
• Suitable for balconies, walkways, and rooftops, it can withstand heavy foot traffic
• Three colors are available
• Environmentally Friendly
• Available with anti-slip finish
• No toxic rainwater run-off
• Cool roofing has thermo-reflective properties
• Thin thickness (between 2-4 mm)

Advantages:

Lifespan: Because of its high resistance to usure, the fiberglass coating is unlikely to degrade significantly before a few decades. It is guaranteed for the first 15 years.

Waterproofness: Because fiberglass is non-porous, it has no weaknesses that could lead to leaks over time. Given its flawless impermeability, it has proven its effectiveness in the boat, pool, and tank industries.

Thermal comfort: Fiberglass has a very high coefficient of thermal conductivity. For decades, it has been used to insulate homes. Because of its UV resistance, it absorbs up to 15 °C below the slab, lowering the building’s energy costs.

Adaptability: Fiberglass is malleable and easily fits the various roof shapes. The coating thickness ranges from 2 to 4 mm, making it simple to apply to large surfaces.

Aesthetic finishes: A well-made fibreglass coating offers pleasant visual finishes. Available in 3 colors, it can also be suitable for the realization of terrace roofs or vegetated roofs (rooftops). Furthermore, it is simple to clean with pressurized water.

Application :

Several layers of polyester resin and glass mat are applied to achieve a strong and durable finish. The first layer of polyester resin is carefully applied to the surface with a roller or brush, ensuring even coverage. The second layer consists of glass mat coated with polyester resin, which must be installed without any creases and with an appropriate overlay. To achieve a smooth surface, the fibreglass is sanded to remove any imperfections. Finally, the Top Coat is applied, providing a protective layer that adds a finish and enhances the appearance of the product. Each step of this process is crucial for ensuring a high-quality and long-lasting end result.

Information sheet : download here