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Home > Green building material > MDI-based PU waterproofing material
Introduction of MDI Polyurethane waterproofing material

01. Strong physical properties: strong adhesion, elasticity & flexibility.
02. Protection of substrate: preventing concrete from cracking, chalking.
03. Easy application: no building restriction, wide working temperature range.
04. Environmentally friendly: MDI-based, solvent-free product.

01. Water proof construction: factories, mansions, barracks, etc.
02. Imprevious project: external or internal walls, basements.
03. Sandwich: Bathroom, hanging garden.
04. Piping: Underground concrete piping.

● Material composition and basic properties:
Main composition: MDI, polyether polyols, plasticizer, calcium carbonate, chain extender, carbon black.

Basic properties:
1.Store material in a room temperature (23℃) and contact with air, pot
   life is 30 ~ 40 minutes.
2.Store in a room temperature (23℃):
   Tack free is 3 hrs.
   Curing time is 24 hrs.

● The same product lines: MP-204 Green
MP-204 Green main composition: MDI, polyether polyols, plasticizer, calcium carbonate, chain extender, green pigment.

● Packaging & storage:
Packaging: 30 kg two drum/ per set.
Component A 20 kg.
Component B 10 kg.
Storage: Shelf time 12 months. Store in a cool, dry place. Prevent exposure to sunlight.

1.The surface should be dry, sound. All cracks should be patched.
2.The surface should be primed with PU primer.
3.Strictly follow mix ratio recommendations. The mixing ratio is 2:1.
4.MDI-based polyurethane waterproofing material/ MP-204 Black is 30 kg per set. 2 mm thickness per 12
   m2. 3 mm thickness per 8 m2. To achieve the best results of waterproofing, this material should be
   applied minimize 2 mm.
5.Thoroughly mix Component A and Component B with suitable mixing paddle to a low speed (300 ~ 600
   rpm) mechanical mixer, mix for approximately 3 ~ 5 minutes. When mixing the product, avoid air
6.Apply with trowel. The pot life of the mixed material is 30 ~ 40 minutes at 23℃. Care should be taken
   that proper and uniform film thickness is obtained. When mixing has been completed, apply
7.Keep containers tightly sealed when not in use.

1.Do not apply to damp substrate.
2.The surface should be clean and free from oil and grease.
3.Do not apply when temperature is below 5℃, rain is imminent or when RH is above 90%.