Oxidized Bitumen 85/35 Supplier for Roofing, Pipe Coating & Waterproofing

Oxidized Bitumen 85/35 is a premium oxidized bitumen manufactured through the controlled air-blowing process of petroleum bitumen. It is widely used in waterproofing systems, industrial insulation, roofing products, pipe coating, expansion joints, mastics, and numerous construction applications where excellent thermal stability and durability are required.

The designation 85/35 refers to the material's typical softening point of approximately 85°C and penetration value of around 35 dmm, providing an excellent balance between hardness and flexibility. These characteristics make oxidized bitumen 85 35 suitable for projects that demand resistance to heat, moisture, chemicals, and aging.

Thanks to its consistent quality and long service life, Bitumen 85/35 has become a preferred material for contractors, waterproofing manufacturers, insulation producers, and industrial users across many regions of the world.

What is Bitumen 85/35?

Bitumen 85/35 is an oxidized grade of petroleum bitumen produced by passing hot air through penetration-grade bitumen under carefully controlled temperature and pressure conditions. During oxidation, the molecular structure changes, increasing the softening point while reducing penetration.

Compared with conventional paving bitumen, oxidized bitumen provides superior resistance to deformation at elevated temperatures. It also offers excellent adhesion to concrete, steel, masonry, wood, and various building materials.

Its thermoplastic behavior allows the material to soften when heated and become firm again after cooling without losing its waterproofing characteristics.

Production Process of Bitumen 85/35

The manufacturing process of oxidized bitumen 85 35 involves several controlled stages:

Selection of Feedstock

High-quality petroleum bitumen is selected as the raw material to ensure stable final performance.

Air Blowing

Hot air is injected into molten bitumen at elevated temperatures. Oxygen reacts with hydrocarbons, increasing molecular weight and improving physical properties.

Quality Control

Each production batch is tested for:

• Softening point
• Penetration
• Ductility
• Flash point
• Solubility
• Specific gravity
• Loss on heating

Strict testing ensures compliance with international specifications and consistent product quality.

Technical Characteristics of oxidized bitumen 85/35

blown bitumen 85/35 is recognized for its balanced physical properties, including:

• High softening point
• Moderate penetration
• Excellent adhesion
• Strong waterproofing capability
• Good thermal stability
• Long-term aging resistance
• Resistance to moisture
• Chemical resistance
• Good electrical insulation
• Durable performance under varying weather conditions

These characteristics allow the material to perform reliably in demanding industrial environments.

Advantages of blown bitumen 85/35

One reason for the widespread use of oxidized bitumen 85/35 is its combination of performance and cost efficiency.

Its primary advantages include:

• Excellent waterproofing
• High resistance to heat
• Long service life
• Low maintenance requirements
• Strong bonding capability
• Reliable performance in outdoor conditions
• Good resistance to oxidation
• Stable mechanical properties
• Easy application with proper heating
• Compatibility with numerous construction materials

These benefits help reduce maintenance costs while increasing the lifespan of waterproofing and insulation systems.

Applications of Bitumen 85/35

The versatility of oxidized bitumen 85/35 makes it suitable for a broad range of industries.

Roofing Membranes

blown bitumen 85/35 serves as a key raw material in the production of roofing membranes. Its high softening point enables roofs to withstand intense sunlight and elevated temperatures without excessive flow or deformation.

Waterproofing Systems

The material is extensively used in:

• Foundation waterproofing
• Basement protection
• Retaining walls
• Underground structures
• Parking decks
• Water tanks
• Concrete protection

Its moisture resistance helps prevent water penetration and structural deterioration.

Industrial Pipe Coating

Steel pipelines require protective coatings against corrosion and environmental exposure.

oxidized bitumen 85/35 provides:

• Water resistance
• Corrosion protection
• Strong adhesion
• Mechanical durability
• Long-term service performance

Expansion Joint Fillers

Expansion joints accommodate structural movement caused by temperature changes.

Bitumen 85/35 is commonly incorporated into joint filler systems because it offers:

• Flexibility
• Weather resistance
• Strong adhesion
• Long-lasting sealing performance

Bituminous Mastics

Many industrial mastics use oxidized bitumen 85/35 as the primary binder.

Applications include:

• Roof repairs
• Crack sealing
• Waterproof detailing
• Concrete repairs
• Metal protection

Electrical Insulation

Due to its insulating characteristics, Bitumen 85/35 is suitable for electrical applications requiring moisture protection and dielectric performance.

Industrial Flooring

Factories and warehouses often require protective flooring materials capable of resisting water, chemicals, and mechanical stress.

oxidized bitumen 85/35 contributes to durable flooring systems with extended service life.

Packaging Options

Bitumen 85/35 can be supplied in several packaging formats depending on customer requirements.

Common packaging options include:

• Kraft paper bags
• Polyamide bags
• Meltable bags
• Steel drums
• New steel drums
• Reconditioned drums
• Bulk supply

Packaging selection depends on transportation method, project size, and storage conditions.

Storage Recommendations

Proper storage helps preserve product quality.

Recommended practices include:

• Store in dry locations.
• Protect from excessive moisture.
• Keep containers sealed.
• Avoid contamination.
• Prevent prolonged direct sunlight exposure.
• Maintain recommended storage temperatures.
• Handle containers carefully during transportation.

Following these recommendations minimizes quality degradation during storage.

Safety Considerations

oxidized bitumen 85/35 should be handled according to industrial safety procedures.

Operators should:

• Wear protective gloves.
• Use eye protection.
• Wear long-sleeved clothing.
• Avoid skin contact with hot material.
• Ensure adequate workplace ventilation.
• Use appropriate heating equipment.
• Avoid overheating beyond recommended temperatures.

Proper handling reduces operational risks and improves workplace safety.

Environmental Considerations

Modern production methods focus on minimizing environmental impact while maintaining product performance.

Bitumen 85/35 contributes to sustainable construction by:

• Offering long service life
• Reducing maintenance frequency
• Supporting durable infrastructure
• Minimizing replacement cycles
• Improving waterproofing efficiency

When handled and disposed of according to local regulations, the material can be used responsibly in numerous industrial applications.

Why Choose blown bitumen 85/35?

Selecting oxidized bitumen 85/35 provides a dependable solution for projects requiring durability, waterproofing, and thermal stability. Its balanced hardness and workability make it suitable for manufacturers, contractors, and industrial users seeking reliable long-term performance.

Whether used in roofing membranes, waterproofing systems, pipe coatings, mastics, expansion joints, or insulation, blown bitumen 85/35 consistently delivers excellent adhesion, weather resistance, and protection against moisture and heat. With proper storage, handling, and application, it remains an efficient and economical material for a wide variety of construction and industrial projects.

Conclusion

Bitumen 85/35 is a high-performance oxidized bitumen grade designed for demanding industrial and construction applications. Its high softening point, controlled penetration, excellent waterproofing capability, and resistance to aging make it an ideal choice for roofing, waterproofing, pipe coating, insulation, mastics, and expansion joints. By combining durability, thermal stability, and cost-effectiveness, Bitumen 85/35 continues to be one of the most trusted materials for long-lasting protective systems around the world.