MasterRoc MSL 345

Waterproofing membrane

How does MasterRoc MSL 345 work?

MasterRoc MSL 345 membrane is a sprayable membrane for waterproofing concrete structures and water management. MasterRoc MSL 345 membrane is spray-applied between layers of sprayed or cast-in-place concrete. MasterRoc MSL 345 membrane exhibits high bond strength to the substrates on both sides of the membrane with good elasticity.

MasterRoc MSL 345 membrane can be directly applied to damp sections of substrate.

Recommended for use in:

• Cast-in-place or precast

• Composite-designed sandwich structures (concrete/membrane/ concrete)

• Underground structures with complex profiles and geometry

• Bonds to steel and most sheet membranes and enables interface solutions with other waterproofing methods

​What are the unique features of MasterRoc MSL 345?

• ​​Dry-process material, ready-for-use

• Elasticity 80-140% between -4 and 68 ºF (-20 and 20 ºC)

• Fast curing – in 4 to 6 hours (depending on environmental conditions)

• No toxic components

• Environmentally preferable – non-toxic