The information comes from: Internet
Published on:2026-08-06
WPC doors are widely used in hotels, apartments, schools, hospitals, villas and commercial buildings because of their moisture resistance, termite resistance and easy maintenance.
However, not all WPC doors have the same structure or performance.
Two doors may look almost identical in a catalogue, but their density, internal structure, frame thickness, surface finish and hardware reinforcement can be completely different. These differences affect the door’s strength, service life, installation and final project cost.
Before requesting a quotation from a WPC door manufacturer, project buyers should check the following ten specifications.
Density is one of the most important factors affecting the strength and stability of a WPC door.
Low-density material can reduce the door’s weight and price, but it may also provide weaker screw-holding strength and lower impact resistance. This can become a problem in hotels, schools, hospitals and apartments where doors are opened and closed frequently.
Shenghao supplies high-density WPC interior doors with a core density of up to approximately 1100 kg/m³, depending on the required structure and production specification.
High-density WPC material offers several practical advantages:
Density should always be confirmed together with the door structure, thickness and intended application. A higher density alone does not automatically guarantee that every part of the finished door meets the project requirements.
Common WPC door leaf thicknesses include 40mm, 45mm and 50mm. Customized thicknesses may also be available according to the door height, opening size and project requirements.
For standard residential use, a conventional thickness may be sufficient. For taller doors or high-traffic projects, buyers should consider:
For oversized doors, simply increasing the height without adjusting the internal structure may lead to deformation or installation problems.
Shenghao can customize WPC door sizes and thicknesses for different project applications, with door heights of up to approximately 3000mm available for selected structures.
Many WPC interior doors use a hollow-core structure, but the cavity design and wall thickness may vary between manufacturers.
Buyers should not compare prices based only on the external dimensions. It is also necessary to check:
A well-designed hollow-core structure can provide a practical balance between strength, weight and cost. For special applications, additional reinforcement may be required around the hinges, lock body or door closer position.
For large projects, requesting an actual cross-section sample is more reliable than evaluating the door from catalogue pictures alone.
The door frame is just as important as the door leaf.
A complete WPC door set normally includes the door leaf, frame and architraves. The frame specification should be selected according to the wall thickness and installation method.
Before production, buyers should provide:
Adjustable WPC frames can be useful for projects where wall thickness varies slightly between rooms. However, the adjustment range must be confirmed before ordering.
Incorrect frame dimensions can cause more installation problems than the door leaf itself, especially on large apartment or hotel projects.
WPC doors are available in different surface finishes, including:
PVC film is commonly selected for apartment, hotel and residential projects because it offers a wide range of colors and is relatively easy to maintain.
For premium projects, buyers may request special wood-grain finishes, PU-painted surfaces or decorative panel designs. These options require different production processes and should not be assumed to have the same price or delivery time as a standard PVC-film door.
Color confirmation should be based on a physical sample whenever possible. Screen colors and catalogue images may look different under actual indoor lighting.
WPC material is well known for its resistance to water and moisture. This makes WPC doors suitable for humid environments and areas where conventional wooden doors may swell or become damaged.
Typical applications include:
However, “waterproof” should not be treated as a replacement for a detailed technical specification.
Buyers should confirm whether the project requires:
The edges, lock openings and installation joints also need proper treatment to reduce moisture penetration during long-term use.
A door’s performance depends heavily on how securely it can hold hinges, locks and other hardware.
For frequently used project doors, weak screw-holding strength can result in:
The hinge area and lock area should therefore be reinforced according to the door size, weight and hardware type.
If the project specifies ASTM D1761, EN 320 or another screw-holding test, the exact sample material, testing method and required value should be confirmed before production.
Buyers should also provide the hardware schedule early, especially when the doors require concealed hinges, door closers, mortise locks, access-control systems or special handles.
WPC material can expand or contract slightly when temperature and environmental conditions change. Appropriate installation gaps should therefore be considered.
The required gap depends on:
A specification such as “3–5mm expansion gap” is not complete unless it clearly states where the gap should be left.
The customer, door manufacturer and installation team should confirm whether this refers to the gap between the frame and wall, the door leaf and frame, or the profile connection.
A standard WPC interior door should not automatically be described as a fire-rated or soundproof door.
For fire performance, buyers need to clarify whether the requirement applies to:
A material classification under EN 13501-1 is different from a complete fire-door test. If a project requires a certified fire-rated door assembly, the door leaf, frame, seals, hinges, lock and other components must be evaluated as a complete system.
The same principle applies to acoustic performance.
A request stating only “comply with BS EN ISO 10140-2” is incomplete without a target value such as Rw 30dB or Rw 35dB. The required acoustic rating affects the internal structure, gaps, seals, frame and installation method.
These requirements must be confirmed before the manufacturer provides a final quotation.
For large hotel, apartment, school or hospital projects, product quality is only one part of the purchasing decision. Stable production and delivery planning are equally important.
Before requesting a quotation, buyers should provide:
Shenghao provides export packaging and production planning for bulk WPC door orders. Orders can be divided by size, floor, room number or building area to make warehouse management and on-site installation easier.
For customized projects, final production should begin only after the drawings, colors, samples and technical specifications have been approved.
Dongguan Shenghao Door Industry Technology Co., Ltd. supplies WPC finished doors, WPC raw materials and WPC door production equipment for international customers.
Our WPC solutions are suitable for hotels, apartments, villas, schools, hospitals, offices and other residential or commercial projects.
Our services include:
We do not recommend selecting a WPC door based only on the lowest price. Correct material density, structural design, frame dimensions, hardware reinforcement and installation details are essential for long-term performance.
If you are sourcing WPC doors for a hotel, apartment, school, hospital, villa or commercial project, please send us the following information:
Our team will review the information and recommend a suitable WPC door specification for your project.
Website: shenghaodoors.com
WhatsApp: +86 13924671020 / +86 15989413113