GoldBitumen, a trusted manufacturer of high-quality bitumen from Iran, produces premium oxidized bitumen that plays a key role in waterproofing membrane rolls used across construction projects. Because membrane rolls must stay stable under heat, pressure, and moisture, they need a strong bonding material that performs well in every climate. Oxidized bitumen becomes the perfect choice due to its higher softening point, stronger structure, and reliable long-term behavior. In this article, you will clearly understand how oxidized bitumen works in membrane rolls, why contractors prefer it, and how it improves durability in roofs, foundations, and industrial waterproofing systems.
Understanding Oxidized Bitumen in the Simplest Way
Oxidized bitumen forms when air passes through hot penetration bitumen. This controlled blowing process changes the physical structure of bitumen, making it harder, more stable, and more resistant to heat.
Because of this process:
It becomes less sticky at high temperatures
It stays flexible but firm
It gains a higher softening point
It resists aging and cracking
These qualities make oxidized bitumen ideal for membrane roll manufacturing, where stability and performance are always essential.
Why Oxidized Bitumen Is Used in Membrane Rolls
Membrane rolls are widely used in construction to block water from entering structures. Although many materials can be used inside a membrane roll, oxidized bitumen remains one of the most effective.
Here’s why contractors depend on it:
1. High Heat Resistance
Because membrane rolls face hot weather and high temperatures during installation, oxidized bitumen must withstand these conditions without melting. Its high softening point makes it stable during torching or direct sunlight exposure.
2. Perfect Waterproof Bond
Oxidized bitumen creates a strong waterproof layer inside membrane rolls. As a result, it prevents water from penetrating roofs, foundations, basements, tunnels, and industrial surfaces.
3. Excellent Flexibility
Even though oxidized bitumen is harder, it still maintains enough flexibility. Therefore, the membrane does not crack when structures move or expand.
4. Long-Term Performance
Oxidized bitumen does not age quickly. It resists oxidation, UV exposure, and moisture. Because of this long life, membrane rolls stay effective for many years with minimal maintenance.
Where Oxidized Bitumen Membrane Rolls Are Used
Because oxidized bitumen works extremely well in waterproofing, membrane rolls made with this material are used in many areas, including:
● Roofing Systems
Contractors install membrane rolls on residential, commercial, and industrial roofs. The oxidized bitumen helps the roll stick firmly and stay stable in extreme weather.
● Foundation Waterproofing
Foundations stay under constant moisture pressure. Membrane rolls with oxidized bitumen create a protective layer that prevents water infiltration.
● Basement Protection
Basements require strong waterproofing because small leaks can cause huge damage. Oxidized bitumen membranes deliver long-lasting protection.
● Tunnels and Underground Structures
Since tunnels face groundwater exposure, oxidized bitumen membranes ensure stable and continuous waterproofing.
● Bridges and Road Waterproofing
Before asphalt laying, membrane rolls are sometimes installed to protect the concrete structure. Oxidized bitumen supports strong adhesion and heat stability.
● Industrial Tanks and Reservoirs
They need durable liners. Oxidized bitumen membranes work well because they resist chemicals and temperature changes.
How Oxidized Bitumen Improves Membrane Roll Quality
Choosing a membrane roll with oxidized bitumen means choosing strength, durability, and reliability. Here are the main quality improvements it brings:
1. Better Adhesion Strength
Because oxidized bitumen sticks strongly to surfaces, installation becomes easier and safer. It also prevents layers from separating over time.
2. Higher Softening Point
Membrane rolls do not deform in hot climates, which is essential for countries with high summer temperatures.
3. Improved Cold Flexibility
Although harder than standard bitumen, it still flexes well in cold temperatures, reducing cracks.
4. Enhanced UV Stability
Oxidized bitumen membranes resist sunlight damage longer, which increases roof life.
5. Stable Chemical Resistance
In industrial environments, oxidized bitumen prevents corrosion and chemical attack on the membrane surface.
Different Grades of Oxidized Bitumen Used in Membrane Rolls
Manufacturers commonly use several oxidized bitumen grades depending on the required flexibility or hardness.
Common grades include:
90/10 (for very hot climates and high stability)
85/25 (for roofing, flexible with good strength)
115/15 (excellent for membrane rolls needing high heat resistance)
75/25 (balanced flexibility and hardness)
Each grade supports different application needs, but all improve membrane performance significantly.
Why Manufacturers Prefer Oxidized Bitumen in Membrane Production
Production lines around the world choose oxidized bitumen because:
It blends easily with polymer-modified layers
It supports high-speed manufacturing
It reduces defects in the final membrane roll
It creates a smoother, stronger finish
It has consistent quality for large-scale production
Therefore, oxidized bitumen remains the industry standard for waterproofing membranes.
Benefits for Contractors and End Users
Contractors choose oxidized bitumen membranes because they install easily and perform reliably. End users benefit from:
Lower maintenance costs
Longer waterproofing life
Better energy efficiency on roofs
Strong resistance to leaks and cracks
Improved building longevity
Everyone—from manufacturer to installer—gets long-term value when oxidized bitumen is used in membrane rolls.
Conclusion
Oxidized bitumen use in membrane roll manufacturing continues to grow because it provides exceptional resistance against heat, water, and environmental damage. Its strong bonding ability, high softening point, and long-lasting stability make it one of the most trusted materials in waterproofing systems. GoldBitumen, a leading manufacturer of bitumen from Iran, supplies top-quality oxidized bitumen for membrane production, roofing, foundation protection, and industrial waterproofing applications. With reliable performance and proven durability, oxidized bitumen remains the smart choice for modern construction projects.