AlphaGuard BIO Base Coat – The Foundation of Sustainable Roof Restoration

AlphaGuard BIO Base Coat, the primary waterproofing layer of our advanced bio-based system. This two-part, polyurethane membrane is engineered to create a seamless, elastic barrier that bridges cracks and accommodates structural movement. Its unique formulation allows application over various existing roofing membranes—including aged bituminous systems—eliminating the need for costly tear-offs and minimizing tenant disruption.

As the core component of the AlphaGuard BIO system, this base coat provides exceptional adhesion to multiple substrates while maintaining flexibility to withstand building movement and temperature variations. When combined with the AlphaGuard BIO Top Coat, it creates a complete waterproofing system that can extend roof life by 20+ years.

Key Features & Benefits:

• Excellent Substrate Adhesion: Bonds securely to concrete, primed metal, and existing roofing membranes without compromising performance.
• Seamless Waterproof Barrier: Creates a continuous, monolithic membrane that eliminates seams and potential leak points.
• Application Over Existing Roofs: Can be installed over aged bituminous and other membrane systems, reducing waste and disruption.
• Bio-Based Formulation: Incorporates renewable bio-based materials for reduced environmental impact.
• 100% Solids Content: Ensures no shrinkage during cure—applied thickness equals final thickness for predictable performance.
• Elastic & Flexible: Accommodates structural movement and temperature-induced expansion/contraction.
• Low VOC Formulation: Minimal odors during application, ideal for occupied buildings and sensitive environments.
• AS4654.1 Compliant: Tested to meet Australian standards for external waterproofing membranes.

Primary Applications:

• Roof Restoration Foundations: Primary waterproofing layer for commercial, industrial, and residential roof restorations
• Existing Membrane Overlays: Perfect for extending the life of aged bituminous, metal, and single-ply roofing systems
• Concrete Deck Waterproofing: Provides reliable protection for concrete roof decks and balconies
• Sustainable Retrofits: Ideal for green building projects requiring environmentally conscious solutions

Technical Specifications:

• Product Type: Two-part, bio-based polyurethane base coat
• Solids Content: 100%
• Compliance: AS4654.1 tested
• VOC: Low VOC formulation
• Application: Can be applied over existing membranes or proper substrates

System Integration:

• Required Topping: Must be covered with AlphaGuard BIO Top Coat for complete system performance
• Surface Compatibility: Suitable for concrete, properly prepared metal, and existing roofing membranes
• Full System Warranty: Works with top coat to provide 20+ years of roof life extension

Why Choose AlphaGuard BIO Base Coat?
The AlphaGuard BIO Base Coat transforms roof restoration by eliminating the need for disruptive tear-offs while providing a robust waterproof foundation. Its ability to adhere to existing surfaces saves time, reduces waste, and minimizes business interruption. For contractors and property owners seeking a sustainable solution that doesn't compromise on performance, this base coat delivers both environmental benefits and long-term reliability.

Do not apply when ambient temperatures are below 5°C
Do not adhere to polystyrene of any kind.
Not for use over coal tar pitch, corrugated metal roof systems or silicone-based coatings and sealants.
Do not apply to damp or contaminated surfaces.