3mm EVA Underlay with Blue PE Film from China Suppliers & Factory - Moisture Barrier for Laminates & Flooring
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| 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
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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 used for?
The blue PE film serves as a visible moisture barrier and installation guide. It makes seam alignment and overlaps clearly visible during installation, helping installers avoid common mistakes such as misaligned seams or uneven overlaps that can lead to long-term flooring issues.
Q
What types of flooring is this EVA underlay compatible with?
This 3mm EVA underlay is suitable for use with laminate, hardwood, and bamboo flooring installations. Its density and thickness make it a versatile choice for a wide range of floating floor systems.
Q
What are the IIC and STC ratings of this underlay?
The EVA 30-4 underlay achieves an IIC (Impact Insulation Class) rating of 73dB and an STC (Sound Transmission Class) rating of 72dB, providing excellent sound reduction for both impact noise and airborne sound transmission between floors.
Q
How does this underlay perform in terms of moisture resistance?
The EVA underlay has a water absorption rate of less than 0.1%, making it highly resistant to moisture. This low absorption rate helps protect the flooring above from subfloor moisture, reducing the risk of warping, mold, and delamination over time.
Q
What container load quantities are available for bulk orders?
For bulk shipping, a 20GP container holds approximately 8,000sqm (86,000sq.ft) of underlay, while a 40HC container can accommodate up to 18,000sqm (195,000sq.ft). This makes it highly efficient for large-scale commercial or distribution orders.
Q
What packaging options are available for this EVA underlay?
The 3mm EVA underlay is available in three packaging formats: nude (unpackaged rolls), pallet, and carton. It comes in roll sizes of 100sq.ft and 200sq.ft, offering flexibility for both retail distribution and bulk wholesale supply.





