SpECtite PUFlex
One-component polyurethane waterproofing membrane for roofs.
SpECtite PUFlex is a high-performance one-component elastomeric coating designed for effective waterproofing. Its unique polyurethane formulation ensures excellent flexibility and durability, making it suitable for various applications in demanding climates.
With a seamless and tough finish, it provides reliable protection against water ingress, while also being UV resistant and easy to apply, ensuring long-lasting performance in construction projects.
With a seamless and tough finish, it provides reliable protection against water ingress, while also being UV resistant and easy to apply, ensuring long-lasting performance in construction projects.
Product Media
Technical Details
SpECtite PUFlex is versatile and suitable for a variety of applications where waterproofing is essential:
– Waterproofing of roofs (asbestos, cement tile, terrazzo and concrete)
– Waterproofing of domes, arches, terraces, balconies, sunshades & parapet walls
– Wet areas, i.e. under tiles in bathrooms, kitchens and shower areas, swimming pools
– Waterproofing over old refurbished roofs
– Metal roof applications
– Waterproofing of roofs (asbestos, cement tile, terrazzo and concrete)
– Waterproofing of domes, arches, terraces, balconies, sunshades & parapet walls
– Wet areas, i.e. under tiles in bathrooms, kitchens and shower areas, swimming pools
– Waterproofing over old refurbished roofs
– Metal roof applications
SpECtite PUFlex offers a range of benefits that make it an ideal choice for waterproofing solutions in various construction applications:
– One-component ready to use, lightweight compared to conventional roof systems
– Formulated to withstand harsh Middle East climate conditions
– Non-flammable and non-hazardous during normal use
– Highly elastic and UV resistant for extended durability
– High crack bridging capability for effective protection against structural movements
– One-component ready to use, lightweight compared to conventional roof systems
– Formulated to withstand harsh Middle East climate conditions
– Non-flammable and non-hazardous during normal use
– Highly elastic and UV resistant for extended durability
– High crack bridging capability for effective protection against structural movements
SpECtite PUFlex is backed by comprehensive technical specifications that highlight its exceptional performance characteristics and suitability for a wide range of applications:
| Appearance | Thixotropic coating |
| Full Cure | 7 days |
| Solids Content | 65±3% |
| Density (ASTM D1475) | 1350±50 kg/m³ |
| Elongation (ASTM D882) | 500±50% |
| Crack Bridgeability (ASTM C836) | 3.0±0.5mm |
| Tear Resistance (ASTM D624) | 6±2 kN/m |
| Shore A Hardness (ASTM D2240) | 45±5 |
| Service Temperature | -5°C to 90°C |
| Application Temperature Range | 5°C to 50°C |
| Coverage Rate | 1 m²/litre at 1mm thickness |
| Shelf Life | 12 months when stored in original unopened containers |
Application of SpECtite PUFlex
Surface Preparation:
Surfaces must be dry and free from oil, dust, dirt, grease, and loose materials. The substrate should be firm; in case of gaps and cracks, fill with suitable polysulphide sealant and ensure the surface is level.
Substrate Priming:
In most cases, the substrate should be primed with either SpECtite PUFlex Primer or SpECtite HP600 Primer. SpECtite PUFlex can be applied once the primer becomes tack-free. For detailed information on tack-free and inter-coating times, please refer to the technical data sheet of each primer.
Application Instructions:
Stir well before use. Do not apply if rain is expected within 24 hours. Apply the material using a brush or roller. A second coat is applied at right angle to the first coat, after the first coat is dry. It is recommended to apply two coats of SpECtite PUFlex to achieve a thickness of 1mm. Multiple coats can be applied to achieve higher thickness. Embed fiber mesh around all corner joints, fillets, pipe penetrations, pipes, over cracks, drains, and where substantial movement is anticipated. Lay the fiber mesh in the wet first coat before applying subsequent coats.
Curing and Protection:
It requires 24 hours to dry between two coats, and 48 hours curing is adequate for foot traffic. Low temperature and high humidity will slow down the curing process. Seven days are required for full cure. In case of expected rains, do not apply SpECtite PUFlex. Ensure curing is complete before laying thermal insulation board, mechanical protection, and other coverings.
Surface Preparation:
Surfaces must be dry and free from oil, dust, dirt, grease, and loose materials. The substrate should be firm; in case of gaps and cracks, fill with suitable polysulphide sealant and ensure the surface is level.
Substrate Priming:
In most cases, the substrate should be primed with either SpECtite PUFlex Primer or SpECtite HP600 Primer. SpECtite PUFlex can be applied once the primer becomes tack-free. For detailed information on tack-free and inter-coating times, please refer to the technical data sheet of each primer.
Application Instructions:
Stir well before use. Do not apply if rain is expected within 24 hours. Apply the material using a brush or roller. A second coat is applied at right angle to the first coat, after the first coat is dry. It is recommended to apply two coats of SpECtite PUFlex to achieve a thickness of 1mm. Multiple coats can be applied to achieve higher thickness. Embed fiber mesh around all corner joints, fillets, pipe penetrations, pipes, over cracks, drains, and where substantial movement is anticipated. Lay the fiber mesh in the wet first coat before applying subsequent coats.
Curing and Protection:
It requires 24 hours to dry between two coats, and 48 hours curing is adequate for foot traffic. Low temperature and high humidity will slow down the curing process. Seven days are required for full cure. In case of expected rains, do not apply SpECtite PUFlex. Ensure curing is complete before laying thermal insulation board, mechanical protection, and other coverings.
SpECtite PUFlex is available in convenient packaging to suit your project needs:
– Supplied in 18 litres pail with a coverage rate of 1 m²/litre at 1mm thickness.
– SpECtite PUFlex Primer is also supplied in 18 litres pail with a coverage rate of 7-10 m²/litre.
– Supplied in 18 litres pail with a coverage rate of 1 m²/litre at 1mm thickness.
– SpECtite PUFlex Primer is also supplied in 18 litres pail with a coverage rate of 7-10 m²/litre.
For detailed information regarding the warranty of SpECtite PUFlex, please contact our team at SMCC through any of the contact methods available on this page for assistance and further inquiries.
Product FAQ
SpECtite PUFlex can be applied to roofs, domes, arches, terraces, balconies, sunshades, parapet walls, wet areas under tiles, swimming pools, old refurbished roofs, and metal roofs.
Yes, SpECtite PUFlex is suitable for metal roofs as it provides effective waterproofing and flexibility necessary for such applications.
It is recommended to apply two coats of SpECtite PUFlex to achieve a thickness of 1mm.
High humidity can slow down the curing process of SpECtite PUFlex. It’s important to avoid application during periods of high humidity or when rain is expected within 24 hours.
The curing time for SpECtite PUFlex is 7 days for full cure, with 24 hours drying time between coats and 48 hours adequate for foot traffic.
The suitable temperature range for application is 5°C to 50°C.
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For more information about SpECtite PUFlex or to discuss your specific project requirements, please reach out to our expert team at SMCC. We are here to assist you with tailored solutions and provide support to ensure successful waterproofing in your construction projects.