MR(Moisture Resistant) GRADE BLOCK BOARD – IS 1659

IW ply MR Grade Block Board is manufactured from the combination of select popular timber battens, veneers and adhesive. Logs are sawn into planks on Band Saws and then dried and chemically treated in seasoning chambers. Later they are Ripsawed into select sized battens. These battens are sandwiched first between two layers of Core Veneers and thereafter Face Veneers bounded with Melamine Formaldehyde Resin under high Pressure and temperature. . The board is seasoned to appropriate moisture content and chemically treated for resistance to wood destroying organisms such as Termite Borer and Fungus.

MR grade Block board is quality product at a very economical price and hence a popular choice

Density Offered :

Sizes Available : 8x4/8x3/7x4/7x3/6x4/6x3


Wardrobes , Cabinets, Furniture, Panels, Ceiling, Patten and Packaging


S. No. Test IS : 303 Requirement IW ply Results
  Dimensional change caused by Humidity    
1 a) Max. change in length
b) Max. change in thickness
c) Max. change in local planeness
± 1mm
± 1 mm
Less than 1/150
0.30 mm
0.40 mm
2 Modulus of Rupture Min. 40.00 Newton/mm2 45.00 Newton/mm2
3 Modulus of Elasticity Min. 4000.00 Newton/mm2 5540.00 Newton/mm2
4 Edge straightness Max. 0.2% 0.05%