Technical Guide for Selecting Plywood Thickness in Concrete Formwork
Choosing the correct thickness for film-faced plywood is essential for structural safety and cost control. As a professional Chinese factory, Langfang Dadi Wood produces various specifications to meet international engineering standards. The load-bearing requirement of the concrete determines which thickness a project needs.
For residential wall casting and standard slabs, 12mm black film Faced plywood and 15mm black film Faced plywood are common choices. These thinner boards are easier to handle and reduce labor costs. However, for high-rise buildings and heavy infrastructure, contractors usually require 17mm black film Faced plywood or 18mm black film Faced plywood. These thicknesses offer higher resistance to deformation under the pressure of wet concrete.
In specialized bridge engineering and nuclear power projects, 21mm black film Faced plywood is often the standard. Our DadiVisa plywood and DadiVisa film faced plywood series are manufactured using high-pressure hot pressing to ensure the core layers are tight. For projects using red film, we provide identical specifications, including 12mm red film Faced plywood, 15mm red film Faced plywood, and 18mm red film Faced plywood. As a manufacturer with 60 hot presses, we ensure that every 21mm red film Faced plywood sheet maintains a consistent thickness tolerance to prevent uneven concrete surfaces.