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Birch plywood
Product Overview
The Precision Substrate for Flawless Luxury Flooring Installations
Floor Underlayment Birch Plywood is a specialty grade engineered to provide a perfectly flat, uniform, and dimensionally stable base for high-end floor coverings. Whether installing Luxury Vinyl Tiles (LVT), hardwood planks, or premium carpets, the success of the finish depends entirely on the substrate. Standard construction plywood often contains core voids and thickness variations that "telegraph" through to the surface over time; our birch underlayment is manufactured to a "no-void" standard with a calibrated thickness tolerance of +/- 0.2mm. This ensures that every joint is flush and every square inch of the floor remains level, preventing the premature wear or "clicking" sounds associated with inferior subfloors.
The 100% birch construction offers a higher density than traditional poplar or eucalyptus underlayments. This density provides superior indentation resistance, protecting the finished floor from heavy furniture legs and high-heeled traffic. Furthermore, the fine-grained nature of birch ensures that the surface is incredibly smooth and non-porous, which is critical for the even spread and permanent bond of modern flooring adhesives. These panels are engineered with a specific moisture content to match indoor environments, minimizing the risk of expansion or contraction that can lead to buckling or gaps in the finished floor.
Installation efficiency is a key feature of our underlayment panels. Available in easy-to-handle $1220 \times 1220\text{mm}$ or $1220 \times 2440\text{mm}$ sheets, they are designed to be quickly fastened using staples or screws without splitting. The multi-ply birch core provides exceptional fastener retention, ensuring the underlayment remains "locked" to the subfloor for the life of the building. For the professional flooring contractor, this material represents the ultimate insurance policy against callbacks, providing a reliable, high-performance foundation for any decorative surface.
Calibrated ThicknessIndentation ResistantVoid-Free CoreAdhesive-Friendly SurfaceHigh Fastener Grip
Technical Specifications
| Core Material | 100% Full Birch Hardwood |
| Thickness | 4mm, 6mm, 9mm, 12mm |
| Tolerance | +/- 0.2mm (Calibrated) |
| Glue Type | MR / E0 (Low Emission) |
| Density | 700kg - 720kg/m³ |
| Panel Sizes | 1220x1220mm / 1220x2440mm |
| Face Grade | BB/CC or C/C Plugged |
Primary Applications
- LVT & Vinyl Plank Substrate
- Hardwood Floor Leveling
- Ceramic Tile Foundation
- Commercial Carpet Underlay
- Radiant Heat System Overlays
Core Competitive Strengths
- No Telegraphing: Eliminates ghosting of core defects.
- Smoothness: Requires less floor prep/patching.
- Impact Strength: Hard birch fibers resist crushing.
- Stability: Won't warp like softwood underlay.
Trade Summary
| MOQ | 1x20GP Container |
| Lead Time | 15-20 Days |
| Packaging | Flat-Pack Protective Pallets |
| Certifications | CE, FSC, CARB P2 |
| Standard | EN 636-2 (Interior Damp) |
| Markings | Nailing Grid Printing Available |
About Us
Tianma Lvjian is China Floor Underlayment Birch Plywood Panels Manufacturers and Wholesale Floor Underlayment Birch Plywood Panels Factory. With 27 years of professional experience in the research, manufacturing, and sales of Birch Plywood, we adhere to the principles of safety, practicality, environmental friendliness, and aesthetics. Our products consistently meet the European standard of E1, ensuring high levels of environmental safety. We use pure birch wood as the main material and continuously innovate to enhance the design and structure of our birch plywood. We also emphasize surface treatment techniques, delivering environmentally friendly, performance-stable, and visually unique new products to the market and our valued customers.
Honor
ICTT-22019-TIANMA-LVJIAN-(NANTONG)-WOOD-STRUCTURE-TECHNOLOGY-CO.,-LTD
TJIN2412003437PL02-1_EN
TJIN2412003437PL01-1_EN
(65073)VCP-12177
(65072)VCP-12176
CE-EN 13986
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40000m³Safety stock -
65000m³Annual production capacity -
20+COUNTRIESExport to over 20 countries -
20+YEARSdedicated experience in the wood industry -
200+Highly qualified and technically competent personnel
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Logistics and Financial Terms
Underlayment panels are high-volume products. We optimize container loading with specialized pallet heights to fit standard flooring warehouse racking. All panels are kept in a climate-controlled facility before shipping to maintain the target 8-10% moisture content. Payment terms are 30% T/T or L/C at sight. We provide technical installation guides with every shipment.
Performance Comparison
- Vs. Luan Plywood: Birch is much harder and more stable, with no risk of the "tannin bleed" that stains light-colored vinyl.
- Vs. MDF/HDF: Plywood has far better moisture resistance and structural fastener holding.
- Vs. OSB: Birch provides a much smoother surface that won't show texture through thin vinyl.
Anatomy of a Flat Floor
The Calibrated Core is the key. [Image showing the comparison between a standard core and a calibrated underlayment core] Each Birch Veneer is selected to ensure there are no overlapping plies, which would create high spots in the finished floor.
Green Building Commitment
Our underlayment panels are FSC-certified and utilize NAUF (No Added Urea Formaldehyde) glues to ensure that your new floor doesn't compromise indoor air quality. By providing a base that extends the life of the decorative floor covering, we help reduce long-term renovation waste and support LEED v4 credit requirements.
Frequently Asked Questions
Q: Why is 6mm birch better than 6mm pine?
A: Birch is much denser and has fewer core voids, preventing "soft spots" that cause vinyl floors to fail.
Q: Can I use it under ceramic tile?
A: Yes, it provides a very stable base, but a thin-set mortar designed for plywood must be used.
Q: Does it prevent "telegraphing"?
A: Yes, our calibrated thickness and void-free core are specifically designed to prevent subfloor patterns from showing through.
Q: Do the sheets need to be acclimated?
A: Yes, we recommend 48-72 hours of acclimation in the room where they will be installed.
Q: What fasteners should I use?
A: Coated divergent staples or specialized underlayment screws are recommended.
Q: Is it okay for bathrooms?
A: It is suitable for damp areas like bathrooms when used with a moisture-resistant adhesive and a waterproof top floor.
Q: Does the grain direction matter?
A: Usually, underlayment is installed perpendicular to the floor joists or the subfloor grain for maximum strength.
Q: Can I use it over radiant heating?
A: Yes, the 100% birch construction handles the thermal stress of radiant systems better than most other woods.
Q: Is the surface sanded?
A: Yes, it is sanded to a smooth 180-grit finish to ensure a perfect bond with flooring adhesives.
Q: What is the benefit of $1220 \times 1220\text{mm}$ sheets?
A: They are easier to handle in tight spaces like hallways and small bathrooms during renovation.
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