
Tongue and Groove (T&G) plywood is a specialized structural panel with milled edges that interlock seamlessly. Unlike standard square-edged plywood, its opposing edges feature a protruding "tongue" on one side and a matching recessed "groove" on the other. This allows adjacent panels to fit together tightly like puzzle pieces.
Technical Specifications:
Thickness: 18mm (±0.3mm tolerance)
Panel Size: Standard 1220mm x 2440mm (4' x 8') | Custom Sizes Available
Core: Dense Hardwood/Birch/Poplar (Specify core option)
Face/Back Veneer: Smooth Sanded Eucalyptus/Okoume/Birch (CC/BB Grade)
Glue Type: WBP (Exterior-Grade, Phenolic Formaldehyde)
Moisture Content: 8-12%
Formaldehyde Emission: E1 (CARB P2 & EPA TSCA Title VI Compliant)
Certifications: CE Marking, FSC® (Optional, Specify)
Products Description
What is tongue and groove plywood?
Tongue and groove plywood is a type of engineered wood panel that features interlocking edges. Each sheet has a protruding tongue on one long edge and a corresponding groove on the opposite long edge. This design creates a tight and secure connection when the sheets are joined together, resulting in a strong and stable surface.
Tongue and groove plywood excels over standard plywood for floor decks. It achieves this by creating a more rigid and robust subfloor, which effectively eliminates sagging and bouncing at the joist connections. But it is also more difficult to install because the tight-fitting joints don't always go together easily.
Core Material
Made from layered wood veneers (hardwood, birch, poplar, or mixed species) bonded with waterproof glue (e.g., WBP phenolic).
The 18mm thickness provides rigidity for heavy loads (flooring, roofing).
Edge Profiling (The "Tongue and Groove")
Tongue: A raised, flat-centered ridge running along the edge's length.
Groove: A matching channel cut into the opposite edge.
Fit: The tongue slides into the groove of the neighboring panel, creating a flush, continuous surface.

Structural Benefits
Reduces Flexing: Interlocked edges act as integrated joist bridging.
Minimizes Squeaks: Tight fit prevents friction-induced noise.
Moisture Resistance: Tight joints limit water infiltration (especially with WBP glue).
Labor Efficiency: Panels "snap together" 30% faster than square-edged plywood.
Products Application
Subfloors: Creates a solid, gap-free base for tile, hardwood, or LVP.
Roof Decking: Interlocking prevents sagging between rafters under heavy loads (e.g., snow).
Loft/Mezzanine Floors: Handles dynamic loads without creaking.
Concrete Formwork: Grooves channel moisture away; joints resist blowout.


Why Choose US
For your costs and profits
In a competitive market, competition can cut into your profits significantly. So we can either support you by lowering prices or break the competitive landscape with a differentiated new product.
- By streamlining the production process, we can offer top-notch products with lower expenditure.
- We really focus on continuous innovation to ensure every item is of top-notch quality with great potential for business growth.
For your quality
- In our industry, we've carefully picked a number of raw material suppliers. We can trace and guarantee the output of high-quality materials, so you can trust our products are always made with good stuff.
For any inquiries, product consultations, or after-sales support you may need, we are here to assist you!
You can reach us through the following channels:
Tongcheng Plaza, Jianshe Road, Pizhou, Jiangsu, China
+86-15190733969
WhatsApp:+8618120032215

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