Belzona 9000 Series
Belzona 9331
Reinforcement Sheet
A polypropylene reinforcement sheet for use with Belzona 3121 MR7 instant waterproofing systems.
A polypropylene fabric used with Belzona 3121 to reinforce instant waterproofing membrane systems.
- SeriesBelzona 9000 Series
Overview of Belzona 9331
Belzona 9331 is a synthetic polypropylene reinforcing fabric used with Belzona 3121 (MR7), an instant waterproofing membrane formulated for application even in adverse weather conditions. Embedded between coats of Belzona 3121, the sheet bridges roof contours, controls film thickness, and adds tensile strength and durability to the cured membrane.
Key Benefits
Polypropylene fabric construction is fully compatible with Belzona 3121 chemistry
Bridges substrate cracks and conforms to complex roof contours, edges, and details
Acts as a film thickness gauge to help achieve correct membrane build
Adds tensile strength and durability to the cured Belzona 3121 system
Supports rapid waterproofing application even in damp or cold conditions
Application Areas
What this product handles, grouped by equipment area — each links to the full application.
Primary application area
Roof Problem Areas
3 applications- Membrane system reinforcementGeneral-area reinforcement of Belzona 3131 (WG Membrane) roof and waterproofing systemsLearn more
- Roof waterproofing & leak repairRoof repair and weatherproofing applications requiring reliable performance in adverse weatherLearn more
- Detail & crack-bridging reinforcementReinforcement of Belzona 3131 (WG Membrane) systems at expansion joints and active substrate cracksLearn more
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