3mm EVA Underlay with 0.04mm Blue PE Film - Quality Flooring from China Suppliers & Factory
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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
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 purpose does it serve?
The blue film is a 0.04mm polyethylene (PE) moisture barrier laminated onto the EVA foam. It serves as a visible installation guide, helping installers identify seam alignment, overlaps, and gaps during the flooring installation process—preventing costly mistakes before they become hidden problems.
Q
What types of flooring is this 3mm EVA underlay compatible with?
This EVA underlay is designed for use with laminate, hardwood, and bamboo flooring. Its density of 100 kg/m³ and 3mm thickness provide excellent support and cushioning for 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 the underlay's ability to reduce impact noise such as footsteps. The STC (Sound Transmission Class) rating of 72dB measures its ability to block airborne sound. Both ratings are high, making this underlay an excellent choice for noise-sensitive environments like apartments and multi-story buildings.
Q
How does the thermal insulation value of 0.04 w/mk benefit my flooring?
A thermal insulation value of 0.04 w/mk means the underlay effectively reduces heat loss through the floor, helping to maintain a comfortable indoor temperature and potentially lowering energy costs. It is also compatible with underfloor heating systems.
Q
What packaging options are available, and how much can fit in a shipping container?
The underlay is available in nude, pallet, or carton packaging to suit different logistics needs. A 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).
Q
Is the water absorption rate of this EVA underlay suitable for moisture-prone areas?
Yes. With a water absorption rate of less than 0.1%, this EVA underlay is highly resistant to moisture. The integrated blue PE film further acts as a moisture barrier, making it suitable for installation in areas that may be exposed to humidity or minor moisture, such as basements or ground-level floors.





