1. Introduction: Why High-Performance Aluminium Grid Film Matters in Modern Underfloor Heating Systems
Underfloor heating has become one of the most efficient and comfortable heating solutions for residential, commercial, and industrial buildings. With increasing demand for energy-saving construction materials, the quality of insulation layers installed beneath heating pipes has never been more critical. A highly effective insulation film does more than simply block moisture—it plays a vital role in heat reflection, energy efficiency, system lifespan, and installation accuracy.
The Underfloor Heating Aluminium Grid Film manufactured by Tradsark New Materials (Weifang) Co., Ltd. is engineered specifically to meet professional heating installation requirements. With a 50 m roll length, 105 µm total thickness, and 102 cm width, this metallized PP/PE/AL laminate film is optimized for fast installation, long-term durability, and enhanced thermal performance.
This article provides a full technical overview, performance explanation, and usage guide—fully SEO-optimized for construction professionals, installers, wholesalers, and engineering buyers.
2. Product Overview: Engineered for Precision and Efficiency
The Tradsark underfloor heating insulation film is a multilayer structure consisting of PP, metallized AL foil, and LDPE. Through advanced lamination technology, the film achieves outstanding heat reflection, mechanical stability, and vapor barrier performance.
Key Specifications
- Length: 50 m
- Width: 102 cm (±2%)
- Thickness: 0.105 mm (±10%)
- Material: PP / AL / LDPE multilayer laminate
- Colour: Silver / Aluminium
- Grid Printing: 10 × 10 cm full lines + 5 × 5 cm broken lines
- Vapor Diffusion: Extremely low, ensures perfect moisture barrier
- Tensile Strength: High longitudinal and transverse resistance
- Temperature Resistance: Suitable for standard construction environments
These specifications make it ideal for underfloor heating installation where consistency, accuracy, and system protection are required.
3. Optimal Dimensions for Large-Area Installation
One of the core advantages of this film is its optimal size design, which enables fast and economical installation across large spaces.
✔ 102 cm Width — Fits Standard Floor Heating Modules
The width of 102 cm is carefully designed to match common polystyrene heating panels and construction modules. This width ensures minimal overlaps, reduced material waste, and seamless installation.
✔ 50 m Length — Covers Up to 51 m² Per Roll
With each roll providing 50 meters of coverage, installers can complete large rooms or multiple smaller rooms without interruption. Fewer roll changes mean faster progress and improved construction efficiency.
✔ 105 µm Thickness — Strong, Puncture-Resistant, Stable
The 0.105 mm thickness strikes the perfect balance between:
- durability
- tear resistance
- flexibility
- moisture protection
Unlike thinner plastic films, the reinforced laminated structure protects the heating system from damage during screed pouring.
4. Precision Installation with 10 cm and 5 cm Printed Grids
Tradsark’s grid film features a dual-grid printing system, which is a major advantage during installation.
10 cm full grid lines
Used for:
- pipe spacing
- layout planning
- clip positioning
5 cm broken grid lines
Used for:
- finer pipe adjustment
- special heating layouts
- high-density heating zones
These grids make installation faster, more accurate, and more professional, especially for installers who need to maintain strict pipe spacing according to building standards.
5. Robust Mechanical Strength: Designed for Real-World Construction
The underfloor heating environment subjects insulation films to mechanical stress, particularly during:
- walking by workers
- positioning pipe clips
- screed pouring
- equipment movement
Tradsark’s film is built with high tensile strength in both longitudinal and transverse directions, ensuring that it does not tear, stretch, or deform during installation.
Mechanical Advantages
- Resists puncture and damage
- Withstands screwdrivers, clips, and tools
- Maintains shape during installation
- Prevents displacement when screed is poured
This durability ensures consistent insulation performance over the lifetime of the heating system.
6. Superior Moisture Protection: Safeguarding Polystyrene Panels
Moisture is one of the biggest threats to underfloor heating efficiency. When water vapor penetrates polystyrene insulation boards, it reduces thermal resistance and shortens system lifespan.
Tradsark Aluminium Grid Film Provides:
✔ Excellent vapor barrier (extremely low vapour diffusion)
✔ Prevents concrete moisture from penetrating insulation boards
✔ Keeps EPS/XPS boards dry and stable
✔ Ensures heating performance and long-term energy efficiency
This moisture protection is essential during screed curing, where trapped water can damage insulation if unprotected.
7. Heat Reflection Technology: Reduce Energy Loss and Improve Efficiency
The metallized aluminium layer incorporated in Tradsark grid film serves an important thermal function.
Reflective Technology Benefits
- Reflects radiant heat back toward the floor surface
- Reduces downward heat loss into the substrate
- Improves overall heating efficiency
- Shortens heating response time
- Helps maintain stable indoor temperature
This reflective technology ensures that more of the generated heat is used inside the living space, not absorbed by the ground.
8. Multi-Layer Laminate Structure: PP / AL / LDPE
The film is produced using advanced lamination techniques that create a durable and tightly bonded multilayer composite.
Layer Functions
- PP layer: Strength, stability, tear resistance
- Metallized AL layer: Heat reflection + vapor barrier
- LDPE layer: Flexibility and sealing capability
This structure ensures that the film maintains its performance even after years of use.
9. Applications: Designed for Underfloor Heating Professionals
Tradsark aluminium grid film is specifically engineered for:
✔ Water-based underfloor heating systems (hydronic systems)
Installed under heating pipes to protect insulation and reflect heat.
✔ Electric underfloor heating
Can be placed behind and beneath heating mats and cables.
✔ General construction moisture barrier
Suitable for other vapor protection applications in flooring.
✔ Heating system efficiency improvement
Reduces thermal bridges and improves energy performance.
10. Installation Recommendations
For maximum performance, Tradsark recommends:
- Lay the film with the printed grid facing upward.
- Overlap edges by 3–4 cm.
- Seal overlaps using aluminium foil tape.
- Ensure full coverage of insulation boards.
- Install heating pipes following the printed grid lines.
- Avoid puncturing the film unnecessarily.
These steps ensure optimal moisture protection and long-term system stability.
11. Why Choose Tradsark Underfloor Heating Aluminium Grid Film
✔ Manufacturing Expertise
Tradsark New Materials (Weifang) Co., Ltd. specializes in PP, PE, BOPP, PET, and metallized film production, ensuring high quality and reliable supply for global HVAC and construction industries.
✔ Professional Quality Control
Every roll is produced under strict QC processes aligned with international standards such as ISO9001, ISO14001, and ISO45001.
✔ Consistent Performance
Our film maintains stable thickness, mechanical strength, vapor resistance, and printing accuracy.
✔ Widely Trusted by Installers and Wholesalers
Tradsark has long-term cooperation with distributors, installation companies, and OEM/ODM clients worldwide.
12. Technical Data Sheet Summary (Based on Your Data Integration)
| Parameter | Value |
|---|---|
| Material | PP / AL / LDPE |
| Total Thickness | 0.105 mm (±10%) |
| Width | 102 cm (±2%) |
| Length | 50 m (±2%) |
| Density | ~100–110 g/m² |
| Tensile Strength | High (longitudinal & transverse) |
| Tear Resistance | Excellent |
| Vapor Diffusion | Extremely low |
| Temperature Resistance | -40°C to +80°C |
| Fire Behaviour | Class F |
| UV Resistance | 2 months |
| Colour | Silver / Aluminium |
| Grid | 10 × 10 cm + 5 × 5 cm |
13. Conclusion: A Complete Insulation Solution for Professional Underfloor Heating Systems
The Underfloor Heating Aluminium Grid Film by Tradsark is a high-performance insulation material designed to support fast installation, reliable moisture protection, and improved heating efficiency. Its optimized thickness, reinforced multilayer structure, heat-reflective surface, and precise printed grid make it one of the most efficient solutions for both residential and commercial underfloor heating installations.
By choosing Tradsark’s grid film, installers and construction professionals ensure a durable, energy-saving, and stable heating system that performs reliably for many years.
