MasterRoc MP 358 GS – Highly reactive, two component hydrophobic polyurethane injection resin for strata consolidation


MasterRoc MP 358 GS is a two component, solvent-free polyurethane injection resin specifically designed for rapid stabilization of strata where high compressive and bonding strength is needed. 

Where is MasterRoc MP 358 GS applied?

  • Consolidation of fractured rock in underground structures 
  • Permanent consolidation of broken coal in development roadways and longwalls
  • Sealing against gas and water 

What are the advantages of MasterRoc MP 358 GS?

  • Fast reacting material applied where structural strength and flexibility is required.
  • Reacts and expands in volume up to 1.5 times without water contact. 
  • Penetrates cracks wider than 0.14mm.
  • Excellent compressive and bonding strength.
  • Low sensitivity to water.
  • Almost no increase in reaction temperature in contact with water. 
  • Good bonding on wet and damp surfaces.


Brochure - Underground Injection Materials

pdf (2.84 Mb)

MasterRoc MP 358 GS_TDS

pdf (722.84 Kb)