Bitumen mastic
Bitumen mastic is essential for a home built with care, providing proper protection, especially from moisture. Waterproofing quality significantly impacts the longevity of foundations and roofs.
Bitumen-mastic stands out for its seamless, airtight, and cost-effective water protection, even in challenging areas and surfaces.
Description of bitumen mastic
Bitumen mastic is a one-component, elastic filler made with bitumen-based solvents, ideal for trim work, sealing, bonding, and quick modifications. It can be applied to damp surfaces and painted, and is ready-to-use, requiring no heating.
Made from a mix of graded minerals and asphaltic cement, it is solid or semi-solid at room temperature and fluid when heated, making it perfect for waterproofing and sealing.
Formulation
Bitumen mastic is a blend of bitumen, minerals, and additives, enhancing durability and adhesion. It’s used for waterproofing, filling cracks, and bonding surfaces like brick, concrete, and wood. It’s reusable and also serves as a road surface filler. A general formula might look like this:
Bitumen Mastic = Bitumen + Filler (e.g., sand, limestone, or clay) + Additives (optional, such as polymers, resins, or curing agents)
The proportions can vary based on the application, but a typical mixture might consist of:
- Bitumen: 60-80%
- Filler: 20-40%
- Additives: A small percentage, if required, to enhance flexibility, adhesion, or reduce curing time.
These ratios can be adjusted for desired consistency and performance.
Bitumen mastic specifications
Bitumen mastic is crafted under expert supervision using premium-grade solvents and raw materials to meet industry standards. Also known as solvent-based rubber or bitumen joint sealer, it is a reliable caulking agent for concrete, brickwork, and other construction materials.
Its key features include:
- Flexible and durable sealing
- Resistant to abrasion and temperature extremes
- Available in various quantities at competitive prices
Bitumen-Mastic Specifications
| Property | VALUE |
| Application Temperature | 50°F to 120°F (10°C to 49°C) |
| Solids by Weight | 63% |
| Film Thickness (WFT/DFT) | 30 mils (762 microns) min. / 20 mils (508 microns) min. |
| Coverage | 52 ft²/gallon (4.8 m²/liter) at 20 mils DFT |
| Mix Ratio | Single Package |
| Flash Point | 100°F (38°C) |
| Drying Time | Touch Dry: 2 hours, Backfill: 24 hours |
| Service Temperature | 0°F to 150°F (-18°C to 65°C) |
| Resistance | Salts, Water: Excellent; Oils & Solvents: Poor |
| Frost & Chemical Resistance | High resistance to freezing and chemicals |
| Application | Suitable for complex surfaces, strong adhesion |
| Environmental & Safety | Fire-safe, eco-friendly, resistant to fungi |
| Durability | Abrasion, heat, and shear resistance |
Types of bitumen mastic
There are several types of bitumen mastic designed for specific applications as well as general applications. Here are types of bitumen-mastic for specific applications.
- Bitumen-Mastic for Flooring – IS: 1195-1978
- Bitumen-Mastic for Roof Waterproofing – IS: 3037-1965
- Bitumen-Mastic for Bridge Decks and Roads – IS: 5317-1969
- Bitumen-Mastic for Tanking & Damp-Proofing – IS: 5871-1970
- Bitumen-Mastic (Anti-Static & Electrically Conducting) – IS: 8374-1977
- Bitumen-Mastic (Acid-Resistant) – IS: 9510-1980
- Black Pitch Mastic Flooring (Oil-Resistant)
- Bitumen-Mastic for Waterproofing and Protective Coating for Concrete Slabs
Bitumen-mastic is designed to serve a specific need, from general use and sealing to specialized applications requiring enhanced performance. There are main types of bitumen-mastic listed below.
Traditional Mastic Asphalt
This economical mastic combines bitumen with minerals like sand or limestone, providing a durable surface. Commonly used in road construction and roofing, it resists wear, heat, and water but is less flexible than other types.
Bituminous Mastic
Bituminous mastic offers superior elasticity and resilience, making it ideal for joints, cracks, and seams in roofing and flooring. It balances strength and flexibility, with high resistance to moisture and temperature changes.
Two companies producing Bostik bituminous mastic and Denso bitumen mastic are Denso and Bostik.
Bitumen Mastic Emulsion
Bitumen-mastic emulsion is a water-based primer that improves adhesion on concrete or masonry, enhancing waterproofing. It’s easy to apply but offers a thinner coating.
Bitumen-Polymer Mastic
Enhanced with synthetic rubber and plasticizers, this bitumen-mastic offers superior durability, flexibility, and resistance to extreme weather, UV, and chemicals. Ideal for long-term waterproofing and sealing in harsh environments, such as rooftops, tanking, and heavy-duty flooring.
Bitumen sealing mastic
Bitumen mastic is ideal for sealing cracks, offering quick-drying, reduced thickness, and improved sound protection. It’s perfect for long-lasting waterproofing and reinforcement in roofing and construction. For joints, existing mastic is heated, and new mastic is added, coated with VG 30-grade bitumen, and treated with base mastic.
Bitumen-mastic forms a durable, plasticized layer with strong adhesion to materials like bituminous surfaces, metal, concrete, and fiber cement. It resists aging, UV exposure, and harsh weather, and can be applied to damp surfaces or in temperatures below 0°C, making it versatile for various applications.
Bitumen joint sealer mastic is a versatile product suitable for a variety of applications, including:
- Repairing cracks, cuts, and bubbles on waterproofing layers.
- Sealing details such as drain outlets, air vents, drainage pipes, chimneys, and corners.
- Reinforcing joints and weak points in bituminous membranes.
- Securing mechanical fixings.
- Fixing bituminous shingles.
Bitumen mastic uses
Bitumen mastic is a self-healing material that absorbs shocks and vibrations, making it ideal for industrial buildings, warehouses, bridge decks, roads, footpaths, LPG bottling plants, and damp-proofing tanks and basements. It’s also used as a base coat for floor coverings and in areas like electroplating shops and chemical plants.
Combining graded mineral aggregates with bituminous binder, it forms a malleable dough-like consistency when heated, making it easy to apply and compress. Its high binder content enhances flexibility and durability for specific applications.
Besides the uses above, bitumen-mastic can be applied for different purposes.
| Use | Description |
| Crack & Fissure Filling | Effective on concrete, roofing felt, asphalt, steel, masonry, etc. |
| Joint Sealing | For gutters, down-pipes, skylights, pre-cast concrete units, and bitumen sealant for concrete joints. |
| Tile & Flashing Bedding | Secures tiles, slates, and flashings for long-lasting durability. |
| Waterproofing Concrete & Masonry | Protects against moisture and corrosion. |
| Heavy-Duty Flooring | Ideal for industrial floors exposed to wear. |
| Bridge Decks | Waterproofing for bridge construction. |
| Building & Industrial Flooring | Provides durable surfaces for residential and industrial applications. |
| Road Construction | Sealing and waterproofing in roadworks. |
| Rooftop Car Parks | Protects and seals parking structures. |
| Hydraulic Constructions | Waterproofs dams, reservoirs, and tanks. |
| Flat Roofing | Durable weather-resistant coating for flat roof surfaces. |
| Tanking | Seals foundations, basements, and storage tanks. |
Bitumen mastic benefits
Bitumen mastic is a versatile, non-slumping compound designed to provide effective sealing between various roofing materials. It is ideal for general waterproofing, sealing repairs, and preparing surfaces for further treatment.
Bitumen-mastic is a versatile and durable solution for construction applications, offering several key benefits:
- Waterproofing: Provides a strong barrier against moisture, preventing water damage.
- Durability: Resistant to harsh weather, UV rays, and temperature changes for long-lasting protection.
- Adhesion: Bonds well to various surfaces, ensuring a solid seal.
- Flexibility: Expands and contracts without cracking, ideal for areas with movement.
- Cost-Effective: Offers a low-maintenance, reliable solution, reducing long-term repair costs.
- Soundproofing: Reduces noise transmission in construction projects.
- Chemical Resistance: Protects against acidic and alkaline conditions, making it suitable as an impervious membrane for concrete, brickwork, steel, and more.
Manufacturing bitumen mastic
There are some steps in Bitumen-Mastic Manufacturing which are explained below.
Initial Heating
Heat filler to 170°C–200°C and mix with half the required bitumen at 170°C–180°C. Continue mixing for 1 hour.
Adding Fine Aggregates
Add fine aggregates and the remaining bitumen. Heat the mixture to 170°C–200°C and cook for an additional hour.
Final Mixing with Coarse Aggregates
Introduce coarse aggregates and continue heating for 1 more hour. Ensure the temperature does not exceed 200°C throughout the process.
Storage and Reuse
Cast the mastic into 25 kg blocks (without coarse aggregates) if not used immediately. Break the blocks into 60 mm pieces, remelt, and mix with required aggregates before use.
Bitumen mastic price
Bitumen mastic price depends on quality and suppliers. For instance, Denso Bitumen Mastic is available in two sizes: a 1 Gallon (3.78L) container priced at around $164.64, and a 5 Gallon Drum (18.9L) costing approximately $190.99.
For other options, prices vary by supplier:
- Toplicht offers 1kg at €11.90 and 5kg at €38.50.
- ChemLV lists 5kg at €18.88.
For accurate pricing, it’s best to directly reach out to suppliers or distributors.
Why Kiapetro?
Kiapetro is dedicated to delivering high-quality bitumen mastic products tailored to our client’s specific needs, whether for one-time projects or ongoing supplies. We focus on providing cost-effective solutions, ensuring exceptional quality, and maintaining reliable delivery throughout every project.
Our flexible payment options and adherence to international standards guarantee consistent performance, making us the trusted choice for all your bitumen-mastic requirements.
FAQ
- Does bitumen-mastic have a strong odor?
Bitumen-mastic has a strong odor; use it in a well-ventilated area or wear a mask.
- How should I clean tools after applying bitumen-mastic?
Clean tools with solvents before mastic dries; hardens make removal tough.
- How long does it take for bitumen-mastic to cure?
Curing time for bitumen-mastic is usually 24 hours to several days.