TYPES OF FIBERBOARD USED IN BUILDING CONSTRUCTION.

Fiberboard is a type of engineering wood which is manufactured by binding or fixing the particles, wood fibers or boards of wood together with adhesives by applying the method of pressing or heating. 
Types of fiberboard in order of increasing the density include particle board or low density fiberboard (LDF), medium density fiberboard (MDF) and hardboard or high density fiberboard (HDF).


  • What is low density fiberboard or particle board?

It is a chip board which is manufactured from wood chips, sawmill shavings and other type of sawdust scrap with the help of resins or other suitable binder. The density of LDF is around 500 kg/m³.

Advantages :
1. It is a lightest and cheapest among fiberboards.
2. It has thermo-acoustic insulation properties, so they are very useful in speakers and in false ceiling of auditoriums, theaters etc.
3. It is eco-friendly material as it is uses wood waste such as sawdust, wooden shavings and wood chips.
It does not get distort easily.

Disadvantages :
1.Particle board has low strength as compared to other fiberboards. 
2.It has low density so it can be easily damaged while transportation.
3.In presence of moisture, particle board expands and warps. Also in extreme conditions discolouration can occur.
4.As it has low strength and gets damaged in presence of moisture, particle boards have low durability and less life as compared to medium density fiberboard and plywood.
5.It cannot support heavy loads as it is weak in strength.


  • What is medium density fiber board?
It is manufactured by breaking down hardwood or softwood residuals into wood fibers with help of wax and resin binders and forming panels by applying high temperature and pressure. The density of MDF is around 600 to 850 kg/m³.

Advantages :
1. MDF are available at economic cost.
2. MDF made by the recycling process hence it is eco-friendly material.
3. It is can be easily painted where wood takes long time for staining different colors.
4. MDF does not have knots or kinks which disturbs the smooth surface.
5. MDF is resistant to some insects as some chemicals are used for the processing of MDF.
6. It can be painted or stained and given a look just the same as real wood. So, it can replace the place of wood furniture.
7. The solid, dense, flat, stiff MDF is a good choice instead of wood.
8. MDF has no grain as it’s not a natural product, it’s easy to cut, drill without damaging.

9. It has excellent machining character for its suitable density.

Disadvantages :
1. MDF is comparatively weaker than wood. Furniture made up of MDF don’t last long. 
2. MDF can crack or split under extreme stress due to low tensile strength.
3. MDF absorbs water quicker than wood. So MDF may swell and everyone has to become conscious of using MDF.
4. MDF doesn’t take nails and screws easily. During nailing, the fraction may appear around it. Pilot holes should be used while screwing.

5. MDF contains VOC, containing urea formaldehyde, that can cause irritation to lungs and eyes.
6. MDF produces dust during the manufacturing process which is harmful for breathing.


  • What is high density fiberboard or Hard Board?
The process of manufacturing of hard board is same as particle board and medium density fiber board, but it is more denser and much stronger and harder because of highly compressed. The density of HDF is 850 to 1000 kg/m³.

Advantages :
1. It has good compressive strength so it is more durable than particle board and MDF.
2. It is good resistant to water due to high density of it. 
3. It Has good impact resistance and hardness.
4. It has smooth surface finish.

Disadvantages : 
1. It is more expansive than particle board and MDF.
2. It is very hard for nailing operations.



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