MasterSeal M200 Self Leveling Waterproofing Base Coat 5G

MasterSeal M200 Self Leveling Waterproofing Base Coat 5G

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MasterSeal M 200 Self-Leveling Grade Waterproofing Base Coat is a one-component, moisture-curing polyurethane waterproofing membrane base coat for use in MasterSeal Traffic 1500 and 2000 deck coating systems.

The MasterSeal M 200 basecoat is used in conjunction with non-slip aggregate and one of several MasterSeal Topcoat options to form a finished system.


Easy to use. One-component. Moisture curing. Self-leveling polyurethane waterproofing basecoat. Used together with MasterSeal 225 (Sonoguard) Topcoat. It has very high solids and very high elongation. Exceptional adhesion/peel resistance.

Easy preparation reduces on-site labor costs.


  • Concrete Balconies
  • Plaza Decks
  • Stadiums
  • Mechanical-room floors
  • Wood-Based walk decks and walkway (exterior-grade plywood)
  • Exterior-grade plywood or concrete parking garages

Not for use over asphalt surfaces.


1st Coat: 25 wet mils at 50 Sq.Ft./gallon. Each 5G bucket will cover 200-250 sq. ft.

Application Tips

  • Do not apply Sonoguard Basecoat heavier than the recommended wet 25 mils / dry 20 mil application PER LAYER.
  • You can add layers and cure between layers to increase thickness.
  • Proper application is the responsibility of the user.

Data Sheets


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