The hardboard represents sheet material which is often applied in production of furniture, draft decoration of wall, ceilings and floor in rooms. There are 9 brands of hardboard with various physicomechanical properties which should be considered at material selection.
Structure of hardboard
The hardboard is made from woodworking waste — spills, shavings, sawdust. Add various knitting additives, rosin and paraffin for increase in moisture resistance, antiseptics to lump and the antiprena protecting from fire exposure. Also the structure can be impregnated pektoly, at the same time durability of material increases by 20-30%.
Ready sheets of hardboard turn out by hot pressing. Then the front surface becomes covered with varnish, is painted, revetted with decorative film or plastic. The rear side can be also revetted, or remains corrugated and rough, for the best coupling with surface when gluing. It is simple to imagine this material — everyone who paid attention to back wall of cabinet or bottom of drawer, knows what is hardboard.
The main difference of hardboard from fibreboard in the hardness of structure. The term fiber board more general, the technology of its production is set by state standard specification 4598-86. This concept includes any materials, including rather soft. Hardboard are called only dense sheets which one party is decorative and front.
Brands of hardboard
The hardboard is classified as well as fibreboard. Letter "T" has to be surely specified, it designates the hardness of material. "With" says that the front layer is made of fine wood pulp. If the face side is painted, in marking will be specified "П". Choosing hardboard on floor or to rooms with the increased humidity, it is necessary to pay attention to material with designation "B" - waterproof. If it is required to revet walls with hardboard, it is possible to pick up "NT", that is semisolid. At last, for creation of partitions or furniture supersolid material - "ST" is necessary.
Hardboard sizes
Most often it is possible to meet the following sheet size of hardboard: the 2140th 1220 mm, 1700х2745 mm, 2750 h1220mm. It is possible to find big sheets in specialized hardware stores, up to 6 meters long, most often they are chosen by those who want to lay hardboard on floor as substrate under the main covering. Panels from hardboard of small width will be suitable more for those who are going to revet walls. Also the thickness of plate is important, physicomechanical material properties first of all depends on it.