MasterProtect H 321
A water based, silane/siloxane clear water repellent for masonry surfaces.
MasterProtect H 321 is a one component, water based silane/siloxane blend.
MasterProtect H 321 penetrates deep into the substrate where it reacts chemically. The reaction starts immediately as soon as the active ingredients get in contact with the substrate.
The reaction time depends on temperature, humidity and nature of the substrate. The treated surface does bead water shortly after application of MasterProtect H 321.
MasterProtect H 321 is a clear penetrating silane/siloxane based water repellent for use on porous and semi-porous substrates such as clay and calcium silicate brick, honed limy-sandstone and sand-cement render.
Improves the aesthetics by reducing efflorescence. Surface appearance remains unchanged as MasterProtect H 321 penetrates into the substrate.
Long term protection due to deep penetration. Ultraviolet and acid rain resistant.
No influence on moisture vapour permeability.
One layer only.
Easy to apply
Ready to use, no dilution on site guarantees consistent quality.
Application equipment and spillages easily cleaned with soapy water.
Reduces volatile organic emissions into the atmosphere.
No dangerous fumes.