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Cherry Interior: Block boards Prices & Sizes in Kenya

Block boards standard sizes available in the Kenyan market are given below:

Block board is usually found in various sizes and thicknesses. The common size of a block board is 2440 x 1220 x 30 mm. In Kenya, the thickness of the blockboard can be 12 mm, 15 mm, 19 mm, 25 mm, 30 mm, 35 mm, 40 mm, 45 mm or 50 mm. The price of blockboard is always calculated per square foot.

Note: Any other dimensions (length, breadth and thickness) as agreed between the manufacturer and the purchaser can also be used in the market – it usually depends on the demand of the purchaser for need and quantity.

Blockboard price are always calculated per square foot. Their price range may vary depending upon the type of inner core wood species used (softwood or hardwood), size and thickness of the sheet.

Blockboard is one type of engineered compound plywood board where softwood strips are joined edge to edge and bonded together machining often a sandwich structure placing hardwood between them.

Block board is usually found in different sizes and thickness. Block board size in Kenya is normally 2440 x 1220 x 30mm .

Technical Properties of Blockboards

  • Modulus of elasticity long
  • Density
  • Bending strength
  • Bending strength cross
  • Formaldehyde emission
  • Modulus of elasticity cross
  • Fire safety category
  • Thickness tolerance
  • Length and width tolerance

Types of Blockboards in Kenya

The classification of block boards in Kenya depend on different properties such as quality, use, raw wood used for the core. Followings are the type of blockboard:

Depending on quality and use:

  • Interior Grade Blockboard
  • Exterior Grade Blockboard

Depending on the raw wood used in the core:

  • Softwood Blockboard
  • Hardwood Blockboard

Different aspects of these types are briefly discussed below:

Interior Grade Blockboard

These grades are made for indoor uses which are resistant to moisture and called MR (Moisture Resistant) eg. Furniture, door, window shutter.

Exterior Grade Blockboard

This variety of blockboard is manufactured for outdoor uses. These are called BWP (Boiling Water Proof) or as BWR (Boiling Water Resistant). This high quality of resistance is because of the adhesives used here are also good in quality.

Softwood Block board

Solid blocks of wood are used to make each blockboard sheet those are attached together using glue. The sheets are called strips or battens. The surface is covered with hardwood veneers.

Hardwood Block board

Hardwood is dense, heavy, costly, strong as the core is made from hard sheets. The coating is also by hardwood.

Processing of Blockboard

Followings are the steps of blockboard processing:

1. Slicing

The logs of timber are sliced at first for making the raw of blocks. Strips may be 25 mm.

2. Rotary Cutting

For outer layer, logs are cut at rotary cutting. Thus veneer for coating is obtained.

3. Gluing

To attach the slices glue or adhesives are used eg. Urea formaldehyde, Phenol formaldehyde which is called plastic resin. Exterior grade block board requires phenol formaldehyde. Gluing is done under high pressure.

4. Drying

The blocks are dried to reduce the moisture as well as water content left inside blocks. For drying the blocks are kept before the sun. The moisture content is reduced to 10-12%. After proper drying, they are ready for making a sandwich.

5. Attaching

Blocks are attached together used softwood or hardwood as required for interior or exterior grade required.

6. Finishing

Final finishing giving lamination, a coating is done.

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