MasterProtect H 400

Water-based 40% silane penetrating sealer

Formerly: Enviroseal 40

How does MasterProtect H 400 work?

MasterProtect H 400 is a water-based, 40% alkylalkoxysilane penetrating sealer. It provides long-lasting protection against moisture intrusion, freeze/thaw cycles, and chloride intrusion.

Recommended uses:

  • Interior or exterior
  • Horizontal and vertical
  • Above grade
  • Parking garages
  • Stadiums
  • Bridge decks
  • Concrete highway road surfaces
  • Ramps and barrier rails
  • Many other reinforced concrete structures

What are the unique features of MasterProtect H 400?

  • 40% silane
  • Ideal for traffic-bearing surfaces
  • Does not alter surface appearance

What are the benefits of MasterProtect H 400?

  • Excellent penetration protecting against damage from moisture intrusion and chloride ion penetration
  • Breathable to allow interior moisture to escape without damaging sealer
  • One component for ease of application

Product Information

Data Guide

Certification Letter

Guide Spec

LEED Letter

Safety Data Sheets


MasterProtect H 400

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