MasterPel 240: Water-repellent and efflorescence control admixture with excellent resistance to wind-driven rain

Formerly: Rheopel Plus

How does MasterPel 240 work?

MasterPel 240 multipurpose admixture is used in a variety of water-repellent and efflorescence control applications. This unique formula is based on a novel silane chemistry that is different from that of conventional water-repellent admixtures in the concrete industry. MasterPel 240 admixture also exhibits excellent wind-driven rain resistance and has achieved the highest rating per ASTM E 514. MasterPel 240 admixture meets ASTM C 494/C 494M requirements for Type S, Specific Performance, admixtures.

Recommended uses:

  • Architectural blocks
  • Single-wythe masonry construction
  • Paving stones
  • Segmental retaining wall units
  • Concrete roof tiles
  • Precast /prestressed concrete

What are the unique features of MasterPel 240?

  • Unique formulation
  • Part of block producer water-repellency certification program
  • Contains components that enhance color and reduce efflorescence potential
  • Provides improved material flow and extrusion characteristics

What are the benefits of MasterPel 240?

  • Superior water repellency versus conventional water-repellent admixtures
  • Significantly reduces secondary efflorescence (improves primary efflorescence control)
  • Improves color vibrancy and pigment efficiency
  • Increases compressive and flexural strengths
  • Increases production rate
  • Adds visual appeal

US / Canada Product Information

Data Sheet

Data Sheet (French)

Specification for Water Repellent Unit Masonry 

Product in Focus: MasterPel 240 and Efflorescence Control

Product in Focus: MasterPel 240 for Concrete Masonry Walls

Direct contact

Master Builders Solutions Technical Support

Admixture Systems


Safety Data Sheet (SDS)

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Product Certifications

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Related Literature

MasterPel 240 Data Sheet

pdf (79.14 Kb)

MasterPel 240 Data Sheet (French)

pdf (70.13 Kb)

Product in Focus: MasterPel 240 Efflorescence

pdf (158.25 Kb)

Product in Focus: MasterPel 240 for Masonry Walls

pdf (485.20 Kb)