Composeal Gold 40 Mil PE Specifications & Technical Data
Composeal Gold 40 Mil PE is a premium waterproofing and crack isolation membrane designed for use beneath ceramic tile, porcelain tile, and natural stone installations.
This three-ply membrane combines waterproofing protection with crack isolation performance, helping reduce the transfer of substrate movement to finished tile surfaces while protecting floors and walls from moisture migration.
Designed for residential and commercial applications, Composeal Gold provides uncoupling, waterproofing, and crack isolation benefits in a single membrane system. The membrane is installed using thin-set mortar and is suitable for a variety of interior and exterior tile applications where dependable moisture protection and substrate crack management are required.
Primary Applications
- Tile and natural stone floor installations
- Bathroom and shower waterproofing systems
- Crack isolation beneath ceramic and porcelain tile
- Balconies and terraces without occupied living space below
- Commercial and residential flooring projects
- Interior waterproofing applications exposed to non-pressurized water
Composeal Gold 40 Mil PE features a three-layer construction consisting of a polyethylene waterproofing core bonded between polypropylene non-woven layers, creating a durable membrane system designed for long-term performance beneath tile and stone installations.
Material Composition & System Components
Composeal Gold 40 Mil PE utilizes a three-layer membrane construction engineered to provide waterproofing protection, crack isolation, and substrate decoupling beneath tile and natural stone installations.
Membrane Construction
- Top Layer: Polypropylene non-woven substrate
- Core Layer: Polyethylene waterproofing membrane
- Bottom Layer: Polypropylene non-woven substrate
The polypropylene surfaces allow secure bonding with thin-set mortar while the polyethylene core provides waterproofing protection and crack isolation performance.
System Components
Composeal Gold may be installed as part of a complete waterproofing system utilizing specialized accessories designed to protect seams, corners, and penetrations.
- Inside Corners
- Outside Corners
- Floor Collars
- Wall Collars
- PE Seam Tape
These accessories help maintain waterproofing continuity at critical transitions throughout the installation and are used where waterproofing protection is required.
When installed according to manufacturer recommendations, the complete system helps provide long-term protection against moisture migration while supporting tile and natural stone finishes.
Applications & Installation System
Composeal Gold 40 Mil PE is designed to function as a waterproofing, crack isolation, and uncoupling membrane beneath ceramic tile, porcelain tile, and natural stone installations. The membrane is bonded to the substrate using thin-set mortar and creates a protective layer between the substrate and finished floor covering.
Recommended Applications
- Residential bathroom floors
- Shower and wet area waterproofing systems
- Large-format tile installations
- Commercial flooring projects
- Balconies and terraces without occupied living space below
- Interior waterproofing applications exposed to non-pressurized water
- Crack isolation beneath tile and stone installations
Thin-Set Installation Method
Prepare the substrate by removing dust, dirt, debris, and contaminants that may interfere with adhesion. Once the surface is properly prepared, apply a modified or multi-purpose thin-set mortar using a 1/4 in. x 1/4 in. (6 mm x 6 mm) square-notched trowel.
The membrane should be embedded into the fresh thin-set mortar while maintaining full contact with the substrate. Proper mortar coverage helps ensure reliable waterproofing performance and long-term durability.
Waterproofing & Crack Isolation Benefits
- Helps prevent moisture migration beneath tile installations
- Provides crack isolation protection from substrate movement
- Creates a waterproof layer beneath tile and stone finishes
- Supports uncoupling between the substrate and finished flooring
- Suitable for both residential and commercial applications
When installed as part of a complete waterproofing system, Composeal Gold helps protect tile assemblies from moisture intrusion while reducing the transfer of substrate stress to the finished surface.
Waterproofing & Crack Isolation Performance
Composeal Gold 40 Mil PE combines waterproofing, crack isolation, and uncoupling performance within a single membrane system. The membrane is designed to help protect tile and natural stone installations from substrate movement while preventing moisture migration beneath finished surfaces.
The membrane's three-layer construction provides a durable waterproof barrier while maintaining the flexibility necessary to accommodate normal substrate movement. This helps reduce the transfer of stress and minor cracking from the substrate to the finished tile assembly.
Waterproofing Performance
When properly installed and all seams, corners, and penetrations are treated according to manufacturer recommendations, Composeal Gold provides dependable waterproofing protection for interior and exterior tile installations exposed to non-pressurized water.
- Protects against moisture migration beneath tile installations
- Suitable for bathrooms, showers, balconies, and terraces
- Helps maintain the integrity of tile and stone assemblies
- Compatible with complete waterproofing system accessories
- Provides long-term moisture protection beneath thin-set tile installations
Crack Isolation Benefits
- Helps reduce the transfer of substrate movement to tile surfaces
- Provides uncoupling between the substrate and finished flooring
- Supports large-format tile installations
- Suitable for residential and commercial projects
- Designed to improve long-term tile installation performance
Composeal Gold is commonly specified where both waterproofing protection and crack isolation performance are required within a single installation system. The membrane provides an effective solution for tile installations that may be exposed to moisture while also benefiting from substrate stress reduction.
Seam Treatment & Waterproofing Components
For waterproofing applications, all membrane seams, transitions, and critical waterproofing details should be properly reinforced to maintain a continuous waterproof barrier throughout the installation. Composeal Gold utilizes PE seam tape and accessory components to help protect joints, corners, and penetrations from moisture intrusion.
PE Seam Tape
After the membrane has been installed, seams should be covered using 6-inch PE seam tape. The seam tape is non-adhesive and is embedded using thin-set mortar to create a continuous waterproof transition between adjacent membrane sections.
The manufacturer also permits installers to cut 6-inch strips from membrane material when seam tape is not available. All seam reinforcement should be installed according to manufacturer recommendations.
Waterproofing System Components
- PE Seam Tape
- Inside Corners
- Outside Corners
- Floor Collars
- Wall Collars
These components are designed to reinforce waterproofing at locations where movement, penetrations, or directional changes occur within the installation.
Seam Performance
Proper seam treatment helps maintain waterproofing continuity throughout the installation and prevents moisture migration through joints, transitions, and corner assemblies. All waterproofing details should be completed before tile installation begins.
When used as part of a complete waterproofing assembly, seam tape and accessory components help create a reliable moisture barrier beneath tile and natural stone installations.
Technical Data & Performance Properties
Composeal Gold 40 Mil PE is engineered to provide waterproofing, crack isolation, and uncoupling performance while maintaining durability under demanding installation conditions. The following technical data summarizes the physical and performance properties reported by the manufacturer.
General Product Information
| Property | Value |
| Color | Yellow / Black |
| Temperature Resistance | -30°C to +90°C |
| Printing | Possible |
| Scaling | Possible |
| Quality Certification | DIN EN ISO 9001:2015 |
| Warranty | 5 Years |
| Storage | Store cool and dry, protect from sunlight, use within 24 months |
Physical Properties
| Property | Value |
| Maximum Width | 1000 mm |
| Thickness | 0.90 mm |
| Total Weight | 375 g/m² |
| Roll Length | 30 meters |
| Breaking Load Longitudinal | 400 N / 15 mm |
| Breaking Load Lateral | 430 N / 15 mm |
| Extension at Break Longitudinal | 90% |
| Extension at Break Lateral | 100% |
| Tear Resistance Longitudinal | 160 N |
| Tear Resistance Lateral | 150 N |
| Water Pressure Resistance | 3.0 Bar |
| Moisture Vapor Resistance | ≥ 450 h |
| Bonding Strength | ≥ 85 m |
| Burst Pressure | ≥ 0.2 N/mm²* |
| Fire Classification | B2 |
*Performance may vary depending on the adhesive used during installation.
The membrane is designed to provide dependable waterproofing performance while maintaining flexibility, tear resistance, and long-term durability beneath tile and natural stone installations.
Chemical Resistance, Warranty & Technical Support
Composeal Gold 40 Mil PE has been tested for resistance to a variety of chemicals commonly encountered in residential, commercial, and light industrial environments. The membrane demonstrated strong resistance to chemical exposure while maintaining its waterproofing and crack isolation performance characteristics.
Chemical Resistance
| Chemical | Resistance |
| Hydrochloric Acid (3%) | Resistant |
| Sulphuric Acid (35%) | Resistant |
| Citric Acid (100 g/l) | Resistant |
| Lactic Acid (5%) | Resistant |
| Sodium Hypochlorite (0.3 g/l) | Resistant |
| Salt Water (20 g/l) | Resistant |
| Potassium Hydroxide (3%) | Resistant |
| Potassium Hydroxide (20%) | Resistant |
| Alkali Resistance (28 Days) | Resistant |
| Alkali Resistance (ETAG 022 - 16 Weeks) | Resistant |
Warranty Information
Composeal Gold 40 Mil PE is backed by a 5-year manufacturer warranty covering the guaranteed product qualities. The membrane should be stored in a cool, dry location protected from direct sunlight and used within 24 months of receipt.
Due to manufacturing processes, slight variations in color or printing may occur between production batches. These variations do not affect the membrane's intended waterproofing and crack isolation performance.
Technical Notes
- Suitable for waterproofing and crack isolation beneath tile and natural stone installations.
- Designed for applications exposed to medium and high levels of non-pressurized water.
- Can be used in residential and commercial flooring systems.
- Compatible with complete waterproofing system accessories including seam tape, corners, and collars.
- Manufactured under DIN EN ISO 9001:2015 quality standards.
Technical Support
The technical information contained in this document is based on manufacturer testing and field experience. Installers should verify product suitability for the intended application and follow all manufacturer recommendations, tile industry standards, and local building code requirements.
For additional product information, installation assistance, or technical support, contact Flooring Supply Shop or Compotite directly.
Helpful Resources
- Composeal Gold 40 Mil PE Installation Instructions
- Composeal Waterproofing Videos
- Waterproofing Membranes Collection
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