Open-air exposed areas like balconies and terraces, walkways, galleries, penthouses, loggias, the roofs of underground car parks used as plazas, decorative balconies and outdoor seating areas are constantly exposed to the elements. Langwei offers liquid-applied Polyurethane waterproofing systems with long-term protection for plain colored decorative terraces that guarantee unalloyed enjoyment of the outside area – year after year. The Langwei® products can be used as solid color decorative self finished systems but can also be covered with tiles, paving or timber decking.
SINGLE COMPONENT POLYURETHANE WATERPROOF COATINGis a liquid macromolecule waterproof material, is suit for constructing on dry,wet base, after coating, it will cure , become durable, high elasticity, non-toxic, odorless waterproof membrane
It have water based and solvent based polyurethane waterproof coating, is a new type environment friendly waterproof material
Simple application (roller or airless spray)
When applied it forms seamless membrane without joints.
Resistant to water, heat and frost
Resistant to root penetration
Water vapor permeable
Provides excellent thermal, weather and UV resistance.
Waterproofs old bitumen-, asphalt felts by covering them
Provides high sun reflectivity, contributing to thermo insulation
Remains flexible over a temperature span of -40°C to +90°C
Provides excellent adhesion to almost any type of surface
Can be used for pedestrian and vehicular traffic
Resistant to detergents, oils, seawater and domestic chemicals
Application does not need the use of open flames (torch)
Over 15 years of positive feedback worldwide
Waterproofing of Roofs
Waterproofing of Balconies, Terraces and Verandas
Waterproofing of Wet Areas (under-tile) in Bathrooms, Kitchens, Balconies, Auxiliary Rooms, etc
Waterproofing of Green Roofs, Flowerbeds, Planter Boxes
Waterproofing of old Bitumen felts, Asphalt felts, EPDM and PVC membranes and old Acrylic coatings.
Protection of Polyurethane Foam Insulation
Waterproofing and protection of Concrete constructions like Bridge-Decks, Tunnels, Stadium Stands, Car Parks, etc.
Tensile Strength,Mpa ≥
Break and elongation,%≥
Tear strength,N/mm ≥
Low temperature flexibility,°C≤
Bonding strength of moistbase MPa ≥
Dry time of outside h ≤
Dry time of inside h ≤
solid content, %≥
Storage and Handling
Storage at indoor room temperature. Temperature above 40ºC may cause accelerate formation of insoluble solid. Good housekeeping is essential in areas where chemical spillage is likely to occur.
The shelf life after applied can be 10~20years Storage in ventilate,dry area, Prohibit contact fire, In common transfer conditions, storage can be 12~14 month