WHAT IS BITUMEN PRIMER D41?
Bitumen Primer D41
Bitumen Primer D41 is a type of bitumen-based primer commonly used in construction and waterproofing applications. It serves as a preparatory coating applied to various substrates before the application of bituminous materials such as membranes, coatings, or sealants. Primer D41 typically consists of bitumen or asphalt mixed with solvents to create a thin, tacky liquid. Its primary function is to enhance the adhesion between the substrate and the subsequent bituminous layer, ensuring a strong and durable bond. This primer is often used on concrete, metal, or masonry surfaces to improve the surface’s receptiveness to bituminous materials and to promote better waterproofing performance. It helps to seal porous surfaces, reduce surface dust, and provide a uniform base for the application of bitumen-based products. Bitumen Primer D41 is applied using various methods such as brushing, spraying, or roller application, depending on the substrate and project requirements. It is essential to follow manufacturer guidelines and safety precautions when handling and applying this primer.
Bitumen Primer serves as a preparatory coating for concrete and timber surfaces before applying heat-fused membranes like APP and SBS modified bitumen. Made from oxidized bitumen and pure solvents, this primer is versatile and effective. It’s used to anchor membranes, coat pipes, and protect concrete and metal structures. Unlike traditional primers, it can even be applied on wet surfaces, making it highly adaptable. Its applications extend to sealing concrete porosity and creating a robust binding primer for multiple waterproofing layers and membranes. The primer boasts fast curing, excellent penetration, and strong adhesion to substrates without leaving any tackiness on the surface. With these qualities, Bitumen Primer ensures a reliable and durable foundation for various bituminous waterproofing applications.
APPLICATIONS OF BITUMEN PRIMER
Bitumen Primer finds versatile applications in construction and waterproofing projects due to its adhesive and protective properties.
Here are some common applications:
- Surface Conditioning: Bitumen Primer is used to condition surfaces like concrete and timber before applying heat-fused membranes such as APP and SBS modified bitumen. It ensures proper adhesion and improves the overall effectiveness of the waterproofing system.
- Anchoring Membranes: It acts as an anchoring agent for bituminous membranes, ensuring they adhere firmly to the substrate. This helps in creating a robust waterproofing barrier, especially in areas prone to water ingress.
- Coating Pipes: Bitumen Primer is applied on pipes to protect them from corrosion and environmental damage. The primer forms a durable coating that enhances the longevity of the pipes, particularly in harsh conditions.
- Concrete and Metal Protection: It is used to coat concrete and metal structures, providing them with a protective layer against moisture, UV radiation, and other external factors. This helps in preserving the integrity and extending the lifespan of the structures.
- Sealing Porous Surfaces: Bitumen Primer is effective in sealing the porosity of concrete substrates, preventing water infiltration and enhancing the substrate’s durability. It ensures a smooth and uniform surface for subsequent waterproofing applications.
- Binding Primer: It serves as a binding primer for multiple layers of bituminous waterproofing coatings and membranes. The primer enhances the adhesion between layers, creating a strong and durable waterproofing system.
- Fast Curing: Bitumen Primer has a fast curing time, making it suitable for projects that require quick turnaround times. This allows for efficient application and faster completion of waterproofing tasks.
Overall, Bitumen Primer is a versatile product that plays a crucial role in enhancing the performance and longevity of waterproofing systems in various construction applications.
EXPLANATION OF MODIFIED BITUMEN PRIMER
A modified bitumen primer is a sticky, oily substance applied as a layer on various surfaces to enhance adhesion and weather resistance. It is typically spread in thicknesses ranging from 0.75 to 12 mils, with preferred thicknesses of 1-7 mils on roof decks. This primer is then covered with one or more layers of asphaltic material to create a weather-resistant surface, often using granule-coated membranes according to current specifications. The application process involves applying a suitable amount of the modified primer composition to surfaces such as new or existing roof decks, siding, or acoustical base surfaces. For instance, on a new roof, the primer is applied followed by nailing an asphaltic base sheet onto the deck through the primer layer. Finally, a weather-resistant, bitumen-modified cap sheet is torched over the base sheet to complete the installation. Key benefits of this modified primer include significantly reduced volatile organic compound (VOC) concentrations, rapid drying times of 1-5 minutes, and a flash temperature above 100°F, ensuring quick and efficient installation. While the examples provided illustrate preferred embodiments and comparisons, they do not limit the scope of the invention as described in the preceding text and appended claims.
SIMPLIFIED EXPLANATION OF BITUMEN PRIMER ADHESIVE
Bitumen primer adhesive is a substance used to enhance the bonding between bituminous materials and surfaces, commonly employed in construction and waterproofing applications. In a basic experiment, a bitumen primer known as D 41, containing 70% asphalt and 30% mineral spirits solvent, was tested. This primer exhibited inferior adhesion to the roof deck compared to other solvents. It’s important to note that adjustments and improvements can be made to the composition of bitumen primer D 41. For instance, conventional additives like thickeners or diluents can be incorporated to change its viscosity, or additional adhesives like pressure-sensitive adhesives can be introduced to enhance its adhesive properties. These modifications can be made without straying from the intended purpose and scope of the product.
BENEFITS OF BITUMEN PRIMER
Bitumen Primer offers a host of advantages, making it an indispensable component in construction projects.
Here are its key features presented in a simpler and clearer way:
- Enhanced Adhesion: Improves the bond between bituminous materials and substrates, ensuring a strong and durable connection.
- Dust Binder: Acts as a binder for dust particles, preventing their dispersion and providing a clean surface for further treatments.
- Surface Dressing: Suitable for dressing masonry and metal surfaces, enhancing their appearance and protecting them from environmental elements.
- Water Resistance: Provides excellent water resistance, safeguarding structures against moisture ingress and water damage.
- Corrosion and Chemical Resistance: Protects surfaces from corrosion and chemical damage, extending the lifespan of structures in corrosive environments.
- Porous Surface Sealer: Penetrates and seals porous surfaces, preventing water penetration and enhancing substrate durability.
- Fast-Drying: Features a fast-drying formula, allowing for quick application and accelerated project timelines.
- Cost-Effective: Offers a cost-effective solution with no heating, thinning, or mixing required, reducing labor and material costs.
- Versatile Compatibility: Compatible with various substrates and structures, making it suitable for a wide range of construction applications.
In summary, Bitumen Primer offers a range of benefits including improved adhesion, dust binding, surface dressing, water resistance, corrosion protection, fast drying, cost-effectiveness, and versatile compatibility, making it an essential choice for construction projects.
BITUMEN PRIMER D41 TYPES
BITUMINOUS ROOFING PRIMER
This primer is a cold applied general purpose roofing primer used as dressing to concrete, masonry, and metal surface. And as the primer coat prior to application of membranes.
APPLICATIONS FEATURES
This primer is a bituminous liquid that penetrates deep into the porous substrates to improve the adhesion of bituminous materials that are to be applied to the substrate.
APPLICATIONS
- The surface must be thoroughly cleaned and all dust, dirt, oil, and grease to be removed.
- primer should be well stirred prior to use and applied to the substrate by means of brush, roller or spray.
- After application don’t leave the primer exposed for more than 24 hours, if this should be the case, apply a further coat and allow curing. Tools may be cleaned with any solvents.
COVERAGE RATE
Coverage rate varies from 0.2 – 0.3 kg/m² depending on application method, surface properties and condition of substrates.
DRYING TIME
Less than four hours, to touch depends on local weather conditions.
PACKAGING
primer is supplied in 180-kg drums and 15-kg pails. Each drum/pail bearing the product name and batch code.
STORAGE
- Keep the products packed in a dry place.
- Keep away from direct sunlight.
HEALTH, SAFETY AND ENVIRONMENT
- Use only with proper ventilation.
- Avoid contact skin and eyes by careful working.
- Do not use near open flame.
- It is advisable to use goggles and gloves.
- In case of eye contact immediately wash with cold water or consult the physician
All safety measures should be observed during application. Fire extinguishers should be available at site. Care should be taken with gas, and torch should not be rested on finished surface or on any materials that can be scratched by flame or hot torch. Gloves and goggles should be worn by all workers during application.
Read, understand and follow all Material Safety Data Sheets and product label information for this product prior to use.
TECHNICAL DATA SHEET OF BITUMINOUS ROOFING PRIMER
| PROPERTIES | RESULTS | TEST METHOD |
| Color | Black | ——- |
| Viscosity saybolt furol @ 25 °C | 25 – 125-Cps. | ASTM D88 |
| Density @ 25 ⁰C | 0.92 – 0.93 kg./ltr. | ASTM D70 |
| Drying time | 3 – 4 Hours | In IIC Lab |
| Drying time through |
24 Hours | In IIC Lab |
| Water Content % | 0.5 Max | ASTM D6511/D95 |
| Flash Point | 50 °C | ASTM D94 |
| Shelf lifeBlack | 2 – Years | ——- |
COVERAGE OF BITUMINOUS ROOFING PRIMER
| 1 Kg | 3.3 to 5 m² |
| 15 kg | 50 to 75 m² |
| 180 kg | 600 to 900 m² |
PRIMER D41
SOLVENT BASED BITUMINOUS PRIMER
DESCRIPTION
Primer D‐41 is a solvent based bituminous primer suitable for general purpose roofing primer used as dressing to concrete, masonry and metal surface and as a primer coat prior to application of membranes.
APPLICATIONS
- A cold applied solvent based bituminous primer
- A bituminous liquid primer penetrates deep into the porous substrates to improve the adhesion of bituminous materials that are to be applied to the substrate.
- Conforms to the requirements of ASTM D41
DRYING TIME
- General purpose primer for concrete, masonry and metal surfaces.
- As priming coat before applying and bituminous coating
- As priming coat before applying any waterproofing membrane
- Suitable for use as primer below or above ground level
APPLICATION TOOLS & EQUIPMENT
- The surface must be thoroughly cleaned and free from dust, dirt, oil, and grease
- primer D‐41 should be well stirred prior to use and applied to the substrate by means of brush, roller or spray.
- After application don’t leave the primer exposed for more than 12‐ hrs, if this should be the case, apply a further coat and allow curing.
- Tools may be cleaned with any suitable solvents suchas gasoline or kerosene.
COVERAGE RATE
Coverage rate varies from 0.3 ‐ 0.5 kg/sq.mt depending on application method, surface properties and condition of substrates.
DYING TIME
Less than four hrs, to touch depends on local weather conditions.
STORAGE
- Keep the products packed in a dry place.
- Keep away from direct sunlight.
- Do not place the pallets on top of each other
HEALTH, SAFETY AND ENVIRONMENT
- Use only with proper ventilation.
- Avoid contact skin and eyes by careful working.
- Do not use near open flame.
- It is advisable to use goggles and gloves.
- In case of eye contact immediately wash
- with cold water or consult the physician
All safety measures should be observed during application. Fire extinguishers should be available at site. Care should be taken with gas, and torch should not be rested on finished surface or on any materials that can be scratched by flame or hot torch. Gloves and goggles should be worn by all workers during application.
Read, understand and follow all Material Safety Data Sheets and product label information for this product prior to use.
TECHNICAL DATA SHEET OF SOLVENT BASED BITUMINOUS PRIMER
| PROPERTIES | RESULTS | TEST METHOD |
| Color | Black | — |
| Viscosity saybolt @25 °C | 25 – 125 sec | ASTM D88 |
| Specific gravity @ 25 °C | 0.958 | ASTM D 1475 |
| Solubility in trichloro ethylene | 99.7% | ASTM D 2042 |
| Density | 0.85 ‐ 0.89 | ASTD D 70 |
| Distillation volume @ 225 °C | 37% | ASTM D 402/D422 |
| Distillation volume @ 260 °C | 39.5% | ASTM D ‐402/D422 |
| Distillation volume @ 360 °C | 42.5% | ASTM D ‐402/D422 |
| Asphalt residue@225 °C | 63% | ASTM D ‐402 |
| Asphalt residue @260 °C | 60.5% | ASTM D ‐402 |
| Asphalt residue @360 °C | 57.5% | ASTM D ‐402 |
| Water Content % | <0.3 Max | ASTM D6511/D95 |
| Flash Point | 45 OC | ASTM D 94 |
| Drying time | 8 ‐ 12‐ | Hours In house |
| Coverage rate | 0.3 ‐ 0.5 Kg/mt2 | In house |
| Shelf life | 2‐years | In house |
SEALCOAT D41
HIGHLY PENETRATIVE BITUMINOUS PRIMER
DESCRIPTION
Sealcoat D41 is a solvent based cold applied, highly penetrative thin bituminous solution in black color.
USES
- For priming concrete, masonry, metal and asphalt surfaces.
- Suitable for use as priming coat before applying any bituminous coating, or modified bitumen membrane in roofing, dam proofing, and waterproofing below or above ground level.
SURFACE PREPARATION
Surface must be clean, free from dirt, dust, oil and grease. New concrete must be fully cured, and dried before priming.
STANDARD
SEALCOAT D41 complies with the requirements of JS 674-90 and ASTM D41-05 Type I.
COVERAGE
It covers from 0.2 to 0.3 Kg/m² depending on application method, surface properties and condition of substrates.
DRY TIME
It dries to touch in 2-4 hours. But time needed to complete dry is from 12 to 24 hours dependent on prevailing conditions.
APPLICATION TEMPERATURE
It can be applied at a temperature between 2°C and 50°C.
APPLICATION
The primer is applied on a single coat. It should be well scrubbed in by brush, ensuring only a thin coating is applied or applied thinly but evenly by spray.
CONTAINERS
SEALCOAT D41 can be supplied in 15 kg pail and 180 Kg drum.
STORAGE
- Store in tightly closed containers under cover and away from sources of heat and ignition.
- Keep the products packed in a dry place.
- Keep away from direct sunlight.
- Do not place the pallets on top of each other.
HEALTH, SAFETY AND ENVIRONMENT
- Use only with proper ventilation.
- Avoid contact skin and eyes by careful working.
- Do not use near open flame.
- It is advisable to use goggles and gloves.
- In case of eye contact immediately wash with cold water or consult the physician
All safety measures should be observed during application. Fire extinguishers should be available at site. Care should be taken with gas, and torch should not be rested on finished surface or on any materials that can be scratched by flame or hot torch. Gloves and goggles should be worn by all workers during application. Read, understand and follow all Material Safety Data Sheets and product label information for this product prior to use.
TECHNICAL DATA SHEET OF SEALCOAT D41
HIGHLY PENETRATIVE BITUMINOUS PRIMER
| PROPERTIES | RESULTS | TEST METHOD |
| Color | Black | – |
| Viscosity saybolt @25 °C | 25 – 125 sec | ASTM D88 |
| Specific gravity @25 °C | 0.958 | ASTM D1475 |
| Solubility in trichloro ethylene | 99.7% | ASTM D2042 |
| Distillation volume @ 225 °C | 37% | ASTM D402 |
| Distillation volume @ 360 °C | 42.5% | ASTM D402 |
| Asphalt residue @225 °C | 63% | ASTM D402 |
| Asphalt residue@360 °C | 57.5% | ASTM D402 |
| Penetration @25 °C for Asphalt residue @360 °C | < 50 dmm | ASTM D5 |
| Water Content % | <0.5 | ASTM D95 |
| Flash Point | 45 °C | ASTM D94 |
| Drying time through. | 8 – 12 | Hours In house |
| Shelf life | 2-years | In house |
COVERAGE OF SEALCOAT D41
| 1 Kg | 3.3 to 5 m² |
| 15 kg | 50 to 75 m² |
| 180 Kg | 600 to 900 m² |
TECHNICAL DATA SHEET OF BITUMEN PRIMER D41
| Properties | Values | Test Method |
|---|---|---|
| Density. Kg/litre | 0.85-0.88 | ASTM D-70 |
| Saybolt Furol Viscosity at 250C Seconds | 25-125 | ASTM D-88 |
| Tack Free time, hour | 2hrs at 300 C | - |
| Distillation, Volume% of the Primer | ||
| Up to 2250C | 35 (Min) | ASTM D-402 |
| Up to 3600C | 65 (Max) | |
| Tests on residue from distillation: | 20-50 | ASTM D-5 |
| Penetration at 250C | 99 | ASTM D |
| Solubility in trichlorethylene% | 2042 | |
| Water Content | 0.5 (Max) | ASTM D-95 |
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