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3mm EVA Underlay with 0.04mm Blue PE Film from China Suppliers | Quality Factory Flooring Solution
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Technical Data
| MODEL | EVA 30-4 | WATER ABSORPTION | <0.1% |
| THICKNESS | 3mm | IIC RATING | 73db |
| DENSITY | 100kg/m³ | STC RATING | 72db |
| SIZE | 100sq.ft / 200sq.ft | LOAD QTY. (20GP) | 8000sqm / 86000sq.ft |
| THERMAL INSULATION | 0.04w/mk | LOAD QTY. (40HC) | 18000sqm / 195000sq.ft |
Visible Installation, Comprehensive Protection: Blue Film EVA Underlay
- Visible Seam Alignment
- Prevents Overlap Errors
- Eliminates Hidden Gaps
- Long-Term Floor Stability
In the world of flooring installation, the most costly expenses often stem from invisible mistakes—a misaligned seam, an accidental uneven overlap, an imperceptible tiny gap. These overlooked details will gradually surface over the years: squeaking noises, local bulges, edge deformation—all are cumulative consequences of minor installation oversights. Traditional underlays hide all these beneath their monochromatic surfaces, remaining undetected until problems arise. We are determined to change this passive protection model, thus creating the blue film EVA underlay—making the protection process visible and ensuring perfect results from the very start.
Frequently Asked Questions
Q
What is the blue film on the EVA underlay and what is its purpose?
The blue film is a 0.04mm PE (polyethylene) film laminated onto the surface of the EVA underlay. Its distinctive blue color makes seam lines, overlaps, and edges clearly visible during installation, allowing installers to identify and correct alignment errors in real time—preventing common issues such as squeaking, bulging, and edge deformation down the line.
Q
What types of flooring is this EVA underlay compatible with?
This EVA underlay (Model EVA 30-4) is designed for use with laminate, hardwood, and bamboo flooring. Its 3mm thickness and 100 kg/m³ density provide a stable, cushioned base suitable for floating floor installations across all three flooring types.
Q
What are the IIC and STC ratings, and why do they matter?
The IIC (Impact Insulation Class) rating of 73dB measures how well the underlay reduces impact noise such as footsteps, while the STC (Sound Transmission Class) rating of 72dB measures its ability to block airborne sound. Both ratings are well above standard requirements, making this underlay an excellent choice for multi-story buildings, apartments, and noise-sensitive environments.
Q
How does the thermal insulation value of 0.04 w/mk benefit my flooring?
A thermal insulation value (R-value related) of 0.04 w/mk means the underlay effectively reduces heat transfer between the subfloor and the finished floor surface. This helps maintain a more consistent room temperature, improves underfoot comfort, and can contribute to energy efficiency—especially in cooler climates or rooms with radiant heating systems.
Q
What packaging options are available, and how much can fit in a shipping container?
The underlay is available in nude (unpackaged), pallet, or carton packaging to suit different logistics needs. A standard 20GP container can hold approximately 8,000 sqm (86,000 sq.ft), while a 40HC container can accommodate up to 18,000 sqm (195,000 sq.ft), making it highly efficient for large-scale commercial orders.
Q
Is the water absorption rate of <0.1% important for flooring underlays?
Yes. A water absorption rate of less than 0.1% means this EVA underlay is highly resistant to moisture uptake. This is critical for preventing mold, mildew, and structural swelling beneath your floor. It ensures the underlay maintains its dimensional stability and performance properties even in environments with moderate moisture exposure, such as basements or ground-floor installations.