What does MDO stand for in plywood?
MDO stands for Medium Density Overlay. It refers to a plywood panel with a resin-impregnated fiber overlay bonded to one or both faces. This overlay creates a smooth, paintable surface that is more durable than bare wood veneer.
What is MDO plywood best used for?
MDO plywood excels in applications requiring a smooth painted finish, including highway signs, exterior siding, concrete formwork, and commercial signage. The medium density overlay provides excellent paint adhesion and weather resistance, making it ideal for both indoor and outdoor projects.
What is the difference between MDO and HDO plywood?
MDO has a lighter-weight fiber overlay that produces a matte finish ideal for painting, while HDO (High Density Overlay) has a denser, harder overlay that creates a glossy, abrasion-resistant surface. HDO is better for concrete formwork where surface smoothness is critical, while MDO is preferred for painted applications.
Can MDO plywood be used for concrete formwork?
Yes, MDO plywood works well for concrete formwork, producing a matte concrete finish. It typically offers up to 5 to 15 reuses depending on grade and care. For projects requiring a glossy concrete surface or higher reuse counts, HDO plywood may be a better choice.