Flush Doors v/s Wooden Doors

Flush Doors
Wooden Doors
Raw Material
Flush doors is a name given to doors that are made by using a timber frame which is covered by  plywood or MDF or similar board on both the sides of the door.  The hollow portion inside the door is usually filled with cardboard or board.  These doors are then finished by putting veneer on top or teak ply on top to give it a finishing. These doors have  a perfectly flush and joint less surface.
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Accessories required to implement
Flush doors are very easy to install using minimum efforts and the Accessories required to implement. Raw materials required for their installation are:
  • Door Handles
  • Door Viewers
  • Door closers
  • Door Frames
  • Door Stoppers
  • Architrave
  • Hinges and screws.
  • Tower bolt.
  • Mortise lock.
  • Sliding bolt
Maintenance
Flush doors have a shutter which is plain in appearance so these doors are easy to maintain as the plain surface does not gather dust. The doors either have veneer skin which is finished using polish or the doors are painted with paint which makes the maintenance easier and all you need to do is wipe clean the doors with dry cloth. In case there is a termite problem in your area, it is recommended to buy termite resistance wood and board for these doors
How is it manufactured
Flush door shutters are manufactured in the factory from the raw materials Formed by gluing by the hot press process on both faces of core either ply wood or cross bands and face veneers in the required thickness and size as per ISNo2201-1999. 
Advantages
  • Simple design and are less expensive.
  • Come in attractive colors and have rich and warm appearance.
  • More durable.
  • Can’t split, peel or rot, and don’t require periodic refinishing.
  • Resistant to stains, scratches and crash. 
  • Easy to clean.
Thickness of shutters.
The thickness of flush shutter usually available in the market is 25mm, 30 mm and 35mm. Some vendors may also provide doors with other thickness.
Disadvantages
Flush door are manufactured in factory so exact size should be provided before building the door otherwise it will be very hard to redo the size.
Uses
Flush shutters can be used in the interior of the building on the door opening and cabinets only. As they are finished by putting veneer which is affected by water, these are not suitable in toilets. If it is to be used in bathroom then water-resistant ply or aluminum sheet should be fixed on the inner face of the shutter. 
Flexibility of design and material.
Flush shutters designs are less flexible and are usually available in solid form i.e. solid shutter can be used as solid barriers in the door opening.
How is it fixed
The Flush door shutters are hung in the door frame with hinges and screws and all necessary fittings i.e. handle, tower bolt etc is fixed. Care should be taken that door shutter should move/ swing freely.
Finishing
Generally Flush door shutters are finished with paint. If polish finish is desired on the Flush doors then teak face ply or veneer is fixed on the face of shutter in this way we have teak face polish surface.
Protection from dust
Flush shutters usually have plain joint fewer surfaces which does not collect dust. Now a days designer flush doors are also being made and the grooves on the design are susceptible to collect dust 
Weather effect
Flush shutters undergo little expansion or contraction with seasonal changes.
Strength
Flush shutters have better strength being homogeneous structure.  
Time taken to procure/build
Flush shutters are readily available in the market. These are available in standard sizes so procurement and fixing takes very less time.
Termite effect
Flush shutters are less affected by termite.
Shapes Available
Flush shutters are usually available in rectangular or square shape.
Raw Material
A door  is a movable structure that is used to close the entrance.All doors made from wood are called wooden door and here we are discussing  panel doors that consist of a framing with timber sawn in the direction of grains of required length, breadth and thickness. The frame is grooved on the inside edges to receive one are more panels as per requirement or design.  The panels are made of wooden board or other material
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Accessories required to implement
Wooden doors are very easy to install using minimum efforts and the Accessories required to implement raw materials required for their installation are:
  • Door Handles
  • Door Viewers
  • Door closers
  • Door Frames
  • Door Stoppers
  • Architrave
  • Hinges and screws.
  • Tower bolt.
  • Mortise lock.
  • Sliding bolt.
Maintenance
Wooden shutters take more time and cost in maintenance in comparison of flush shutters as they have more grooves and designs that collect dust and require periodic cleaning
How is it manufactured
Wooden door shutters which are also called Paneled door shutters are manufactured in the factory or hand made by carpenter from the raw materials  as per required thickness and size from sawn timber  by jointing the vertical stiles and rails with glue and wooden pins. After that groves are made to hold the panels either of timber or ply or glass or wire gauze.  
Advantages
  • Easy to install.
  • Wooden doors can be cut and adjusted into required size and minor changes can also be done at the site..
  • They provide beauty, warmth and style to home.
  • These doors are more effective than steel and aluminum doors in providing insulation to the area.
Thickness of shutters.
The thickness of wooden panel door shutter usually built in the market is 30 mm and 35mm and 40 mm but in special cases due to opening size, security or design purpose the thickness may be increased to 45mm and 50 mm or other desired number. 
Disadvantages
Wooden doors are more prone to termite attack than other type of new materials available in the market today.
Uses
Wooden shutters can be used in the exterior, interior and toilet of the building on the door, cabinet, window and ventilator opening.
Flexibility of design and material.
Wooden shutters can be designed with material such as Board, Ply and we can also implement Glass, or wire gauge in wooden door designs.  
How is it fixed
The wooden shutters are hung in the door frame with hinges and screws and all necessary fittings i.e. handle, tower bolt etc is fixed. Care should be taken that door shutter should move/ swing freely.
Finishing
Wooden shutters can be finished with various types of ingredient such as oil, paint, wax polishing, varnish and spirit polishing in originally direct on the wood used. 
Time taken to procure/build
Wooden shutters usually take time to make as one has to purchase raw wood for these doors and the raw wood requires seasoning before it can be used. Though, there are seasoning plants available in the market, yet the time to make wooden doors is higher.
Shapes Available
Wooden shutters can be used in different types of openings i.e. in any shape as required  may be rectangular, square, semi circular, circular  or combination of these.