Film Faced Formwork Plywood – Pre-Sales FAQ

Q1: What is film faced formwork plywood? What is the difference from ordinary formwork?

A: Film faced formwork plywood is an engineered formwork panel made of a high-quality plywood substrate, covered with a phenolic resin-impregnated film and bonded under high temperature and high pressure. Differences from ordinary formwork: ① The surface film layer is waterproof and wear-resistant, allowing 20–30 reuses, compared with only 3–5 for ordinary formwork; ② The poured concrete surface is smooth as a mirror, achieving a fair-faced concrete effect; ③ Resistant to acid, alkali, and weather, suitable for various construction environments.

Q2: What factors affect the reuse times of formwork plywood?

A: The reuse times of formwork plywood are affected by multiple factors: ① Film quality — resin impregnation amount and curing degree determine wear resistance and alkali resistance; ② Core hardness — hardwood core (eucalyptus/birch) has better compression resistance than softwood core (poplar); ③ Construction operations — proper stripping and timely cleaning of residual mortar can greatly extend service life; ④ Storage conditions — horizontal storage, rain and moisture protection, avoiding prolonged sun exposure; ⑤ Release agent use — reasonable use protects the film layer.

Q3: How to choose the thickness and grade of formwork plywood?

A: The thickness selection of formwork plywood should comprehensively consider concrete lateral pressure and support spacing. Common thicknesses are 12–30 mm, with 18 mm being the mainstream in the market. Grade selection recommendations: low-rise residential (≤6 floors): choose 15 mm glued/film-faced panel; mid-to-high-rise (7–18 floors): choose 18 mm high-quality film-faced panel; super high-rise (≥30 floors): choose 18–20 mm high-strength film-faced panel (hardwood core); fair-faced concrete: choose premium film-faced panel. The higher the reuse requirement, the higher the grade should be selected.

Q4: What is the difference between the surface colors of formwork plywood?

A: The film colors of formwork plywood (black, brown, red) mainly differ in film paper material and brand identification; the color itself does not affect physical performance. Different manufacturers use different colors for brand differentiation. When purchasing, focus on film paper quality rather than color.

Q5: How to identify the quality of formwork plywood?

A: Quality identification of formwork plywood can be carried out from the following points: ① Check the surface — a quality film-faced panel has a smooth and uniform surface, no bubbles, no dents, no scratches; ② Check the edges — clean cut, dense glue layer visible, no voids; ③ Check flatness — no obvious wave marks under light; ④ Do a water drop test — drop a few drops of water on the surface and let stand for 2 hours; if the water drops remain bead-like and do not penetrate, it is good; ⑤ Request test reports — including boiling water test, bonding strength, surface abrasion resistance, etc.