Block board is very different from the other engineered woods such as MDF (Medium density fiberboard), particle boards or plywood, etc. Block board is a board which consists of a core made of wooden strips (usually of softwood) between the two layers of plywood. Here the wooden strips are placed edge-to-edge and are enclosed between hardwood veneer sheets which are glued together under high pressure.
Also Read: What is a Block Board?
Generally, the Block board are available in two grades named – BWP Grade (Boiling Water Proof) and MR Grade (Moisture Resistant).
01. BWP Grade (Boiling Water Proof):
These grades of block boards can be used for prefabricated houses, railway coaches, bus bodies, etc, where it is likely to get exposed to high humidity and for external use.
02. MR Grade (Moisture Resistant):
These grades of block boards can be used for internal use such as for doors, partition, panelling, furniture, ceiling, etc.
Both of these grades are available in two more types in the market i.e. Decorative and Commercial type:
03. Decorative Type –
These are the block boards with decorative face veneers on one or both sides and generally used for high class furniture, interior decoration, panelling, partitions, etc. They can be available in BWP and MR grade both as per the application and its uses.
04. Commercial Type –
These are the block boards with veneers of commercial timber on both sides and generally used for ordinary furniture, table tops, panelling and partitions to be painted over flooring and seats of bus bodies, railway carriages, etc.
The grades and types of block boards are represented by the symbols given below:
|Grade and Type||Symbol|
|MR Grade, Decorative type||MR-DEC|
|MR Grade, Commercial type||MR-COM|
|BWP Grade, Decorative type||BWP-DEC|
|BWP Grade, Commercial type||BWP-COM|