Spray sealing is a critical pavement preservation and construction technique — especially across regional and remote networks. In this application, Polymer Modified Bitumen (PMB) plays a vital role in improving chip retention, waterproofing, and resistance to early-life failures like stripping or bleeding.

Puma Bitumen supplies a comprehensive range of PMBs designed specifically for spray sealing, balancing sprayability, adhesion, and elasticity to deliver consistent seal performance under real-world conditions.

We formulate our sealing-grade PMBs with a focus on aggregate adhesion, flexibility, and climate durability, using:

1. Elastomers (SBS-Based Polymers)

Elastomeric PMBs increase the binder’s ability to stretch and recover, which reduces cracking and aggregate loss over time — especially in high-stress areas like corners or wheel paths. SBS modification enhances cohesion and improves sealing performance on both dense and open-graded road surfaces.

Benefits:

• Excellent chip retention

• Better crack resistance in expansive or moving pavements

• Suitable for high-heat or high-rainfall zones

2. Crumb Rubber Modified Binders (CRM)

Crumb rubber, derived from recycled tyres, introduces natural elasticity and viscosity to the binder, improving both sealing strength and surface texture. It is especially valuable in low-traffic and regional roads, where surface deflection and binder ageing are more pronounced.

 Benefits:

• Promotes sustainable pavement design

• Improves binder flexibility and aging resistance

• Enhances grip and skid resistance on sealed surfaces

3. Innovative Polymer Blends

We continually refine our PMBs with custom polymer systems to enhance:

• Adhesion to aggregate, including highly polished or dusty chip

• Temperature stability for hot climate application

• Longer seal life, even under extreme UV and oxidation exposure

Custom formulations are available based on aggregate type, climate zone, and expected traffic loading, ensuring optimal seal performance from day one.

CarbonBind is Puma Bitumen’s leading biogenic polymer modified binder, developed to support the road construction industry’s shift toward low-carbon infrastructure — without sacrificing the performance expected from premium PMBs.

Engineered using biogenic raw materials, CarbonBind partially replaces traditional fossil-derived content with renewable, plant-based inputs, directly reducing the binder’s embodied CO₂ emissions.

Why CarbonBind?

• Formulated with Biogenic Modifiers CarbonBind incorporates renewable, plant-based carbon sources that are non-toxic and fully compatible with existing binder systems.

• Performance Equivalent to Conventional PMBs Laboratory and field performance testing confirm CarbonBind meets or exceeds the durability, elasticity, and sprayability of standard polymer modified bitumen — making it suitable for both spray sealing and asphalt applications.

• Backed by Life Cycle Assessments (LCAs) Independent LCAs validate CarbonBind’s reduction in CO₂ equivalent emissions, providing data transparency and supporting sustainability reporting for contractors, councils, and road authorities.

• Fully Compliant and Field Proven CarbonBind is manufactured under strict quality controls and meets Austroads binder classification standards, with successful trials and supply across multiple Australian states.

• Ideal for:

  • Green infrastructure and sustainability-driven procurement

  • Asphalt and spray sealing where reduced embodied emissions are a priority

  • Projects seeking IS Rating, Green Star, or carbon reporting compliance

  • Councils, road agencies, and contractors pursuing net zero targets