Product Introduction
Bitumen, a cornerstone material in the construction industry, renowned as asphalt, boasts a rich, dense, black, and highly viscous composition derived from petroleum. Its exceptional waterproofing capabilities are celebrated for unmatched performance, making it essential across the construction landscape. Bituminous membranes are the definitive choice for all-encompassing waterproofing solutions, adeptly serving roofs, basements, and subterranean structures, extending their prowess to bridges and a spectrum of constructions. Predominantly, there are two distinguished methodologies for applying these bitumen membranes.
The first is the esteemed Torch-on method, while the second is the Self-adhesive approach, each offering unique benefits.
Torch-on bituminous membranes are your trusted solution, adaptable to any weather scenario, blending versatility with ease of application. When CHENHUA membranes are expertly laid, they morph into a seamless, watertight shield, intricately bonded to the surface, promising ultimate protection and endurance.
Top cover |
Polyethylene Film or other films |
Sand or other granular |
Popular thickness |
3mm 4mm 5mm |
3mm 4mm 5mm |
Reinforcement |
PY or Fiberglass |
PY or Fiberglass |
Size/roll |
1mx10m ,1mx8m ,1mx7.5m |
1mx10m, 1mx8m, 1mx7.5m |
Torch Down Bitumen Waterproof Membranes stand as the preferred choice for comprehensive waterproofing and seepage-proofing across diverse building grades. These membranes perform exceptionally in both exposed and concealed areas, ensuring robust protection for flat roofs, sloped roofs, subterranean spaces, tunnels, bridges, parking facilities, reservoirs, and a vast array of other applications.
Application Method:
1. Substrate Preparation:
Ensure your substrate is pristine-clean, dry, and free from contaminants-setting the stage for an immaculate application process.
All dust and any loose materials must be meticulously removed to guarantee a flawless finish.
Blowholes and voids must be fully exposed and skillfully repaired to ensure a seamless application thereafter.
2. Primer Application:
Before membrane placement, apply primer with precision. Clean the substrate using a dust catcher or blower, then apply a treatment primer to bolster waterproofing, ensuring effective dust consolidation and superior adhesion for optimal results.
3. Membrane Placement:
*Carefully unroll the torch-on membrane, aligning it with precision before commencing the torching or bonding process.
*Lay each membrane in parallel, ensuring a staggered configuration by at least 1 meter to avoid joint overlap, thus ensuring maximum stability.
*Alternating the end-to-end overlaps is paramount, avoiding alignment along a single line to enhance structural integrity.
*Initiate at the lowest slope height, prioritizing areas around drains, downpipes, or other critical details for optimal results.
*During the torching process, simultaneously heat both the membrane and the substrate, paying special attention to the roll and overlapping areas for a secure and steadfast bond.
*Precisely weld overlaps to ensure a clean trickle of melted mixture, approximately 1 cm wide, along the overlap line, achieving a flawless finish.
4. Final Compression:Utilize a roller to firmly compress the membrane surface, ensuring a perfect adhesion that will withstand the test of time and elements.
Attention:
1. The substrate must be dry and clean. Avoid work on rainy or snowy days to achieve the best results.
2. Refrain from working in winds stronger than grade 5 to ensure safety and maintain quality.
3. Construction should not proceed if the temperature falls below 5°C to maintain optimal conditions.
4. Should rain or snow occur during construction, it's crucial to implement protective measures for the laid membrane to preserve quality.
5. All personnel must don designated safety uniforms, and fire control equipment is an obligatory requirement during installation to ensure safety.
Packing and Shipping:
1. Store membranes in a dry, well-ventilated environment to maintain and preserve quality.
2. Different types of membranes should be stored separately to prevent any mixing, ensuring product integrity.
3. Under optimal storage conditions, the membranes have a shelf life of one year from the date of production.
4. During transportation, ensure membrane rolls are stored upright, providing essential protection from sunlight and rain to maintain their quality and longevity.
With pallet |
Seaworthy plywood pallet packing, 20pallets/20ft container |
Without pallet |
Plastic bag per roll, common or OEM with customer brand |
1) What are the popular sizes for the Torch-on bitumen membrane?
-The dimensions of 3mm x 1m x 10m, complemented by a PE or sand granular top, are the most preferred. This size offers exceptional versatility and outstanding performance.
-Dimensions: Featuring a robust 4mm thickness along with a 1m width and 10m length, these membranes come with either a PE film or a sand granular top finish to suit your specific application needs.
2) What is the essential distinction between SBS and APP modifiers?
-SBS and APP are highly advanced modifiers that significantly enhance membrane capabilities. SBS modifiers are renowned for augmenting cold resistance, making waterproof membranes ideal for harsh, cold climates. On the other hand, APP modifiers excel in boosting heat resistance. While they might look similar, their unique enhancements are tailored for specific environmental conditions.
3) Is OEM service available?
-Absolutely! We are thrilled to provide comprehensive OEM services, welcoming you to partner with us at your earliest convenience.
Simply share your logo with us, and we will create a bespoke design to suit your needs. Alternatively, supply your finalized design for printing on PE film. Rest assured, your product will be elegantly packaged and swiftly delivered to your location.
4) Are you a factory?
-Indeed, Shandong Chenhua Waterproof Co., Ltd. stands as a highly seasoned professional factory, specializing in a diverse range of waterproof materials since 1994. Located in the renowned China Waterproof Town - Taitou, our extensive product range is crafted to cater to various waterproofing needs for both hidden and exposed surfaces.
5) What is the delivery time?
-Typically, an order is carefully completed within 10 days following confirmation. However, do note that delivery times may vary based on specific requirements and the volume of the order.