Table of contents
What Is 18mm Film Faced Plywood?
18mm film faced plywood is a high-strength engineered wood panel coated with a waterproof film on both sides. Manufacturers apply phenolic resin to enhance durability, making it a preferred material for formwork and concrete shuttering. The 18mm thickness offers optimal balance between strength and weight, allowing builders to reuse the panels multiple times without compromising on structural integrity.
Key Features of 18mm Film Faced Plywood
1. High Load-Bearing Capacity
The 18mm thickness increases the panel’s ability to withstand heavy loads and resist deformation. Contractors rely on it for slabs, columns, beams, and large-scale infrastructure projects that require strong mold bases.
2. Smooth Film Coating
The phenolic film creates a smooth, glossy finish that prevents concrete from sticking. This ensures easier demolding and leaves the concrete surface cleaner, reducing labor and finishing costs.
3. Water and Moisture Resistance
Thanks to the waterproof coating and high-quality adhesives, 18mm film faced plywood performs well in humid or wet environments. Builders use it confidently in rainy weather or water-intensive construction zones.
4. Reusability
Under proper handling, this plywood can be reused 6 to 10 times, depending on site conditions. Its durability lowers overall material costs and minimizes environmental waste.

Common Applications in Construction
Concrete Formwork
This is the most common use. The 18mm film faced plywood provides a strong mold that holds wet concrete in place until it sets. Its surface ensures easy release and clean concrete finish.
Flooring Systems
Many industrial and commercial sites use it for temporary or permanent flooring due to its thickness and resistance to pressure.
Wall and Roof Panels
Some contractors use this plywood as cladding material or for temporary structural walls. Its strength and smooth finish make it a versatile choice.
Why Choose 18mm Thickness?
Choosing 18mm over thinner panels provides more stability during formwork. Thinner panels like 12mm or 15mm may warp or flex under pressure, while 18mm panels maintain shape and resist cracking. The extra thickness also improves lifespan, especially when reused across multiple construction cycles.
Tips for Handling and Maintenance
- Always store plywood panels on a flat, dry surface to prevent warping.
- Apply edge sealing to avoid moisture penetration at the sides.
- Use plastic or rubber spacers during stacking to reduce surface abrasion.
- Clean the surface after each use to prolong the film’s quality.
How to Choose the Right Supplier
Look for suppliers who:
- Offer waterproof certification and quality test reports.
- Use high-grade hardwood or birch core for better stability.
- Provide consistent film coating thickness and smooth surface finish.
Working with a trusted supplier ensures the 18mm film faced plywood performs to its full potential throughout your project.
Conclusion
18mm film faced plywood combines strength, durability, and smooth performance, making it a top-tier option for concrete formwork and other construction applications. Its reusability and water resistance give it a cost-effective edge, especially in large-scale building projects. For professionals seeking reliable formwork materials, 18mm is the industry standard for a reason.