Polyurethane Waterproofing

Description

HYPERDESMO®-LV a low viscosity version of HYPERDESMO® (CLASSIC VERSION). The product is resulted from the consideration of the popularity of the spray method of application but also the need to keep dilution as low as possible. Alchimica invested in controlling the polymerization procedure parameters so that the molecular weight distribution is narrow, which is directly linked to low polymer viscosity. The resulting product HYPERDESMO®-LV is a one-component polyurethane fluid that cures with the humidity in the atmosphere. It has a viscosity of approximately 30% lower than HYPERDESMO® and can be applied by airless spray with minimum or zero % solvent addition As with HYPERDESMO® (CLASSIC VERSION), the material based on pure elastomeric hydrophobic polyurethane resin plus special inorganic fillers, it displays excellent mechanical, chemical, thermal, UV and natural element resistance properties.


Product Details

Recommended for

Waterproofing and protection of:

• Gypsum and cement boards
• Bathrooms
• Verandas and balconies
• Roofs
• Light roofing made of metal or fibrous cement
• Asphalt membranes
• EPDM membranes
• Stadium stands
• Car parks
• Bridge platforms
• Irrigation channels

Features & Benefits
 

• Excellent adhesion on almost any surface, with or without the use of special primers
• No thinning required
• Excellent weather and UV resistance. The white colour reflects much of the solar energy and so reduces the internal temperature of buildings considerably
• Excellent thermal resistance, the product never turns soft. Max service temperature 80^oC, max shock temperature 200^oC
• Resistance in the cold: The film remains elastic even down to -40^oC
• Excellent mechanical properties, high tensile and tear strength, high abrasion resistance
• Good chemical resistance
• Non-toxic after full cure
• Water vapor transmission: The film breathes so there is no accumulation of humidity under the coat
• Special primers available for almost every substrate
• Special additives, like ACCELERATOR-3000A, are available
  
  

Consumption

1.5 – 1.8 kg/m², minimum total consumption

Certification

Certified quality, environmental and occupational health & safety management systems: ISO 9001/14001 & ISO 45001

Limitations

Not recommended for:

• Unsound substrates (in some cases, application is possible with the use of geotextile reinforcement; please contact our technical department for consultations)
• Waterproofing of swimming pool surfaces in contact with chemically treated water

When used in dark colours for exposed use, a protective topcoat of HYPERDESMO^®-ADY-E (always pigmented at the desired colour) or HYPERDESMO^®-ADY 500 is required. In order to maintain long-term solar reflectance and better colour protection, it is beneficial to apply the aforementioned topcoat layers even when HYPERDESMO^® CLASSIC is applied in light colours