Metal Roof PU Polyurethane Waterproofing Liquid Membrane

Product Description

                                Metal Roof PU Polyurethane waterproofing liquid membrane


DESCRIPTION

Water-based PU waterproof coating is made of self-cross linking pure acrylic emulsion, assisting with a certain amount of modifying agent, active agent, auxiliaries and pigment. It forms an elastic, hard and strong bonding strength film, which is completely strong and flexible waterproof system with the inter area, adaptive to deformation of structure, to achieve long-term function of waterproof and seepage resistance.



MAIN APPLICATION

• Waterproof engineering of the flattops and buildings with special structures
• Underground
• Indoor bathroom and toilet
• Railway, tunnel and underground projects.

FEATURES

• Excellent low temperature resistance, good elasticity, high elongation and resistance to water and fracture.
• Excellent performance for aging resistance.
• Strong bonding strength, adaptive to the bases of masonry, concrete, glass, wood,etc..
• Environment Friendly. Non-toxic and pollution-free.
• Easy for construction, fast solidification, high work efficiency and short construction period.
• Formation of colorful protective surfaces, and beautify the environment.

TECHNICAL DATA
 

Implement Standard: JC/T864-2008
NO.	Item	Standard	Result
1	Solid content,% ≥	65	68
2	Heating Stretch rate	Elongation ≤1.0 Shortening ≤1.0	Shortening 0.7
3	Volatile Organic Compounds(VOC), g/L≤	120	44
4	Tensile strength, MPa≥	1.0	1.8
5	Elongation at break,%≥	300	455
6	Tear strength, N/mm≥	15	26
7	Low temperature flexibility,Rod bent 180ºC, ф10mm Stick	-10ºC,No Crack	Pass
8	Water impermeability 0.3MPa 120min	Impervious	Pass

All measurements are taken at 22ºC and 50% relative humidity. Specifications vary
according to site conditions and should be taken as a guide only.


COVERAGE

Recommend dosage: 1.8 kg/sqm, 1mm thickness, total thickness no less than 1.5mm.


SHELF LIFE

Do not store product exposed to weather and sun. When kept in a cool, dry and protect area, sealed pail have a 12-months shelf life.


INSTALLATION




APPLICATION GUIDANCE

• LEVELING: Substrate should be smooth and firm.

• CLEANING: No garbage, floating pulp on the substrate, keep it dry. Prime the concrete surface

• FIRST COATING: The first layer should be very thin, covering the substrate is enough, less than 0.5mm thickness.

• SECOND & THIRD COATING: Apply the second layer provided the first layer is cured. Coating direction is vertical to the first one and then the third layer`s direction is the same as the first one.

PRECAUTION

• Second layer is the thickest one, the third one is very thin, just for leveling.
• Interval time depends on the application site, but typically full drying time is about 20 hours.
• Fiber reinforcing layer is necessary for inside corner internal corner, floor drain, pipe joints etc, the lap width should not be less than 100mm, extensive application after joints treatment.
• Use PU out after opening, time within 8 hours. Long-term storage will cause the forming of a thin film on the surface. Remove this when application. Does not affect the performance of product.

 

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