BLOCKBOARD
BLOCKBOARD IS A TYPE OF PLYWOOD WITH THE CORE MANUFACTURED FROM STRIPS OF SOLID WOOD OR OTHER WOOD BASED SHEET MATERIAL, LAID SIDE BY SIDE IN ORDER TO FORM THE “CORE”. THE STRIPS, MORE THAN 7MM WIDE BUT NOT WIDER THAN 40MM, ARE NORMALLY LAID SIDE BY SIDE WITHOUT GLUING OF EDGES. THEY CAN BE PLACED EDGE TO EDGE AND SANDWICHED BETWEEN VENEERS OF HARDWOOD. THE SANDWICH IS THEN GLUED UNDER HIGH PRESSURE.
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BLOCKBOARD IS NOT SUITABLE FOR OUTDOOR USE, ONLY SUITABLE FOR INTERIOR WORK BECAUSE THE GLUES USED IN ITS CONSTRUCTION ARE INTERIOR GLUES AND NOT WATERPROOF. IT IS AVAILABLE IN VARIOUS THICKNESSES, INCLUDING 12MM, 18MM, 22MM AND 32MM. THE BOARDS SHOULD BE STORED FLAT AS BLOCKBOARD CAN TWIST OR WARP. WHEN USING BLOCKBOARD TO MAKE SUCH THINGS AS DOORS OR TABLES, IT IS IMPORTANT TO ENSURE THAT THE CORE RUNS LENGTHWAYS IN ORDER TO ACHIEVE MAXIMUM STRENGTH. IT MAY BE USED TO MAKE SHELVES, DOORS, PANELING AND PARTITIONS.
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THE EDGES OF BLOCKBOARD ARE UNATTRACTIVE AND CANNOT BE CLEANED UP WELL. PLACE SOFTWOOD STRIPS, VENEERS OR FILL AND PAINT THE EDGES. IF YOU DECIDE TO PAINT THE SURFACE, IT IS WISE TO PAINT BOTH SIDES IN ORDER TO EQUALIZE THE SURFACE TENSIONS, WHICH WILL AID THE SHAPING OF THE BLOCKBOARD. IF BOTH SIDES ARE TREATED IN THE SAME WAY BLOCKBOARD HAS A GOOD RESISTANCE TO WARPING. IT MAY BE BOUGHT WITH A VARIETY OF APPLIED FINISHES SUCH AS WOOD VENEERS AND PLASTIC LAMINATE SURFACES.
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SOFT WOODS:
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