NEOPROOF PU W -40 polyurethane liquid waterproofing roof membrane

Neoproof PU W-40 polyurethane roofing membrane is a waterproofing coating for roofs covered with felt, used when the highest mechanical strength and exceptional watertightness are required. It creates a membrane that is impermeable to moisture, resistant to UV radiation, and mechanical stress. There's no need to remove the old felt, nor the costs associated with its removal and disposal – simply apply the flexible membrane over the felt, creating a uniform, seamless coating.

The Neoproof PU W -40 waterproofing roof membrane has certified "cool roof" properties (Cool Material).

Neoproof PU W-40 waterproofing roof membrane - scope of applications:

• Roofs covered with felt , metal, concrete flat roofs, cement roof tiles,
• Roof coverings where high resistance to standing water is required,
• Metal surfaces after applying a suitable primer,
• On top of new or old acrylic or polyurethane waterproofing coatings,
• On closed-cell PUR foam insulation for protection against UV radiation and water, and on polystyrene

Polyurethane waterproofing membrane Neoproof PU W -40 - properties/advantages:

• A perfect solution for securing flat roofs, including those that are walked on,
• High mechanical strength,
• Resistance to waterlogging - excellent waterproofing,
• Saving money and time - no need to remove old roofing felt,
• The resulting coating has no joints,
• Resistance to ultraviolet radiation and unfavorable weather conditions,
• Can be applied in cloudy weather (cures through evaporation, does not require UV radiation),
• Remains flexible in a wide temperature range from -40°C to +80°C ,
• Minimum ambient temperature during application 10°C,
• Environmentally and user-friendly (one-component, water-based product),
• Easy application (roller application).

Polyurethane roof membrane Neoproof PU W -40 - other applications:

• Concrete flat roofs
• Metal roofs

Certificates/Test Reports:

• CE certified according to EN 1504-2
• Certificate of Conformity ENo. 1922-CPR-0386
• Cool roofing material certified by the University of Athens
• Optical properties evaluation performed by National and Kapodistrian University of Athens - Physics Dept.
• Test report conducted by the external independent quality control laboratory Geoterra (No. 2018-891)
• Certified external fire resistance in accordance with EN 13501-5. Broof system classification (t1) based on classification report No. D/4/1/2022 in accordance with EN 13501-5 and test report no. 61/22/103/1/D-1/OENV conducted in accordance with CEN/TS 1187 by the external independent laboratory Łukasiewicz IMBiGS.
• Meets LEED v4.1 requirements: SS Credit - Heat Island Reduction - Option 1 - Highly Reflective Roof, Initial SRI ≥ 82
• Meets the VOC content requirements of EU Directive 2004/42/CE

Systematic primers depending on the type of substrate:

• ROOFING PAPER, CONCRETE, CLOSED-CELL PUR FOAM, STYROFOAM - the substrate should be primed with Revinex diluted with water in the ratio Revinex : water = 1 : 4, in order to close the pores, improve the properties of the substrate, better adhesion and higher efficiency.
• BLACK STEEL - the substrate should be primed with Neotex Metal Primer Neodur Metalforce rust remover 4-6 hours (+25°C) before priming .
• GALVANIZED STEEL AND NON-FERROUS METALS - the substrate must be primed with Neotex Inox Primer or Vinyfix Primer .
• POLISHED CONCRETE (GLOSS, NON-ABSORBENT SUBSTRATES) - the substrate should be primed with Super Binder RO3333.

All of the above-mentioned primers should be used according to their technical data sheets. If cracks larger than 1.5 mm appear on the surface, or if you want to extend the durability of your coating, you can reinforce it with Neotextile Jointex flexible acrylic sealant .

Liquid polyurethane roof membrane

If you need effective roof waterproofing , a liquid membrane is the perfect solution. You can use it on roofing felt, metal, concrete, and cement tile roofs. It's a great solution for surfaces exposed to standing water – the coating is seamless and impermeable to moisture. Learn about the benefits of polyurethane liquid membranes and where they're best suited!

Liquid membranes for roofing felt – the most important properties

By choosing liquid roofing membranes , you gain:

• seamless coating resistant to stagnant water,
• resistance to UV radiation and atmospheric factors,
• can be applied in cloudy weather – UV rays are not required for hardening, as it occurs through evaporation,
• ease of application – the liquid roof membrane is applied with a roller,
• no need to remove old roofing felt – you save on disposal costs! 

Where will you use a liquid outer membrane?

This liquid membrane is also suitable for metal roofs (with the appropriate underlayment), ceramic tile roofs, and concrete roofs. It can also be used for waterproofing closed-cell PUR foam and polystyrene.

Liquid polyurethane membrane – use it in your project!

In addition to being water and weather resistant, this liquid roofing membrane

Comparison of liquid waterproofing coatings offered by Trokentech