APP Modified Bitumen Waterproofing Membrane (JY-APP)
Great Ocean APP Modified Bitumen Waterproofing Membrane (JY-APP) is a torch-applied membrane made with atactic polypropylene (APP) modified bitumen and polyester felt or glass-fiber felt reinforcement. Available with PE film, sand, or mineral surface finishes, it is suitable for roofing, basement, underground, and other building waterproofing applications. Standard specifications and OEM/ODM options are available. Contact Great Ocean for technical data and quotation.
Product Introduction
Great Ocean JY-APP Modified Bitumen Waterproofing Membrane is a torch-applied waterproofing sheet made with atactic polypropylene (APP) modified bitumen and reinforced with polyester felt or glass-fiber felt.
APP modification improves the heat resistance of the bitumen compound, making the membrane suitable for roofing and other building waterproofing applications where good high-temperature performance is required.
PE film, sand and mineral surface finishes are available. Reinforcement and surface configurations can be selected according to project requirements.
Typical Available Specifications
Product Features
Good Heat Resistance
APP modification improves the heat resistance of the bitumen compound, helping the membrane maintain stable performance in warm and high-temperature environments.
Reinforced Structure
Polyester felt or glass-fiber felt reinforcement options are available for different waterproofing applications.
Multiple Surface Options
PE film, sand and mineral finishes are available to meet different installation and project requirements.
Verified Waterproofing Performance
A tested 3 mm APP Type I membrane achieved no water penetration at 0.3 MPa for 30 minutes.
Torch-Applied System
Designed for conventional torch application on properly prepared substrates.
Specification Flexibility
Different thicknesses, reinforcement types and surface finishes are available according to project requirements.
Third-Party Tested Performance
A JY-APP Type I waterproofing membrane with polyester reinforcement and PE film surface configuration (APP I / PY / PE-PE / 3 mm) was tested by the Shandong Institute for Product Quality Inspection according to GB 18243-2008.
| Test Item | Requirement | Test Result |
|---|---|---|
| Roll Area | 10.0 ± 0.10 m² | 10.01–10.04 m² |
| Mass per Unit Area | ≥4.0 kg/m² | 4.2–4.5 kg/m² |
| Average Thickness | ≥3.0 mm | 3.0–3.1 mm |
| Soluble Matter Content | ≥2100 g/m² | 2203 g/m² |
| Heat Resistance | 110°C, slide ≤2 mm, no flow or dripping | Upper: 0.3 mm / Lower: 0.5 mm No flow or dripping |
| Low-Temperature Flexibility | -7°C, no cracks | No cracks |
| Water Impermeability | 0.3 MPa / 30 min, no penetration | No penetration |
| Maximum Peak Tensile Force Longitudinal | ≥500 N/50 mm | 885 N/50 mm |
| Maximum Peak Tensile Force Transverse | ≥500 N/50 mm | 856 N/50 mm |
| Peak Elongation – Longitudinal | ≥25% | 31% |
| Peak Elongation – Transverse | ≥25% | 35% |
| Water Immersion Mass Increase | ≤1.0% | 0.8% |
| Peel Strength | ≥1.0 N/mm | 1.6 N/mm |
| Underside Asphalt Coating Thickness | ≥1.0 mm | 1.1 mm |
The values above apply to the tested APP Type I / PY / PE-PE / 3 mm configuration. Performance may vary according to membrane grade, reinforcement, thickness and surface finish.
Third-Party Tested APP Membrane Configurations
Third-party test records are available for different APP membrane surface configurations.
QUALIFIED
APP I / PY / PE-PE / 3 mm
Polyester-reinforced APP membrane with PE film on both surfaces.
QUALIFIED
APP I / PY / M-PE / 3 mm
Polyester-reinforced APP membrane with mineral surface and PE-film underside.
Need the applicable test report for your specification?
Contact Great Ocean with your required thickness, reinforcement, surface finish, quantity and destination market.
Test information shown above applies only to the tested configurations. Performance may vary according to membrane type, reinforcement, thickness and surface configuration.
APP Modified Bitumen Waterproofing Membrane
Typical Applications
JY-APP Modified Bitumen Waterproofing Membrane is suitable for building and structural waterproofing applications, particularly where good heat resistance is required.
Installation Guidelines
JY-APP membrane is designed for conventional torch application. Installation conditions and detailing should follow the project design, applicable technical requirements and site conditions.
Waterproofing Membrane Video
APP vs SBS Modified Bitumen Membrane
APP and SBS are both modified-bitumen waterproofing membrane systems, but the modifiers give them different performance characteristics. Product selection should be based on project design, climate and required technical performance.
| Comparison | APP Modified Bitumen | SBS Modified Bitumen |
|---|---|---|
| Modifier | Atactic Polypropylene (APP) | Styrene-Butadiene-Styrene (SBS) |
| General Characteristic | Good high-temperature resistance | Good elasticity and low-temperature flexibility |
| Selection Consideration | Often selected where heat resistance is important | Often selected where lower-temperature flexibility is important |
| Installation | Torch-applied configurations available | Torch-applied configurations available |
Frequently Asked Questions
Waterproofing Manufacturer Since 1999
Great Ocean Waterproof Technology Co., Ltd. was established in 1999 and manufactures waterproofing membranes, waterproof coatings and related waterproofing materials in Shandong, China.
Production capabilities cover modified bitumen membranes, TPO and PVC membranes, self-adhesive membranes, waterproof coatings and related waterproofing materials.
OEM / ODM cooperation is available for distributors, importers and construction-material brands.
Qualification & Certification Materials
Great Ocean maintains factory, product and quality-related documentation. Please contact our sales team if your procurement process requires specific certificates, test reports or supporting documents.
Need APP Membrane Specifications or Pricing?
Send us your required thickness, reinforcement, surface finish, quantity and destination port. Our team will confirm the applicable product specification, available technical documents and quotation.
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