How does an edged board differ from an unedged board?

Planks include evenly and parallel sawn wood material. Its thickness is approximately several times less than its cross-sectional width. However, an artificial board is a chipboard cut into strips, pressed from shavings and glue. They are replacing natural wood due to their relative cheapness.

The trunk of a tree, from which branches have been removed exactly, without knot protrusions, is cut (sawed) into strips. The cut (cut) lines must be parallel to each other. If they have a tendency to converge, then such a board is no longer considered complete, and at the sawmill they carefully monitor that the thickness of the sawn boards is the same everywhere. The boards are produced using a sawmill capable of processing up to several trunks at the same time, for example, pine or larch. The optimal thickness is set on the sawmill in accordance with the customer's requirements. First, an unedged board is produced - strips of a sawn tree trunk, having the same thickness. But the width of the unedged board is inconsistent due to the unevenness of the trunk, not removed cork layer, primary bark and bast, which form a common layer of bark. The bark is removed relatively easily. Even if it is removed, most often the irregularities of the wood repeat the irregularities of the bark surface. Such a board is still considered unedged.

The edged board is obtained on the same sawmill or using additional equipment: a reciprocating or circular saw, jigsaw. The tool is chosen depending on the thickness of the board: a workpiece up to 2 cm is easily amenable to a saber saw and a jigsaw, up to 10 cm - a grinder with cutting discs for wood or a chainsaw is used. To ensure the parallelism of the cut from the sides of the future edged board, additional guides are provided on the sawmill or other tool that maintain the evenness of the course, a horizontal and vertical laser level gauge and other tools and devices that guarantee the evenness of the cut. As a result, unplaned edged boards are formed. The electric planer passing through them gives planed edged boards.

There are plenty of similarities in the edged board - in addition to the main layer of wood, the core is also used for both. The central layer of the former tree trunk has an even greater strength than the layers of wood, so it is not thrown out of the resulting planks. But the difference between unedged and edged boards is as follows.

• Uneven side edges. The difference in width is not critical - small gaps in the supporting structure are insignificant for the consumer. Here the overall quality - stability, weight margin under static and dynamic loads - will not be significantly affected.
• Grade - with or without bark (cork). Boards with bark removed (without bark) are slightly different from the cost of products on which all the bark has not been removed forcibly.
• The trim strip is easier to store, stack, cut into equal lengths (for example, 6 running meters). It is better ventilated - it is easier to lay identical spacers from the sides, for example, from the same unedged board, disassembled pallets (pallets), etc., which ensures better drying. When folded back to back, the edged board takes up less space. One and the same warehouse, hangar can accommodate more cubic meters of edged timber.
• Less susceptibility to pest insects such as woodcutters and some species of ants. Those, in turn, prefer to hide in the folds and crevices of the bark, as well as in the cracks formed during the natural drying of wood during a long (a year or more) drying. Unedged timber is susceptible to greater and much faster deterioration from insects, mold and mildew.

As a result, the customer will immediately determine what benefit in the case will be given by the edged tree.

Edged board is used for finishing: wall panels made of natural wood, wooden windows and doors, furniture (in particular, the supporting structure of a table, chair, sofa, cabinet, etc.). Grooved planed edged board is used for flooring. A bar (a board with a square section) of smaller sizes, commensurate with the thickness of the original sawn material, is made from a simple edged board. Unedged - a cheaper replacement for the construction of subfloors and ceilings. In particular, low logs or beams are built from it - when the height of the building is sharply limited, and the use of a square beam (or round log) is difficult, or either one or the other turned out to be unavailable, but it is necessary to continue construction: the deadlines for the completion of construction by the time of the onset of cold weather are pressing ...

Clapboards of lower grades - with alternating edged and unedged boards, or only unedged boards - are sheathed in summer houses and buildings in summer cottages. The production of transported container houses, designed for a square of 10-20 square meters, stands apart - unedged products are used as sheathing of the floor, walls and ceiling in such a structure. These buildings are designed only for seasonal living, which means they do not need major insulation. Low-grade (with bark) unedged wood is used, for example, for the construction of sheds, gazebos, non-capital garages, country toilets, summer showers and baths. Thick (from a few centimeters) unedged timber is used as the main (load-bearing) building material for wooden houses. Refusal of additional processing allows the manufacturer (and customers) to significantly save on procurement and sales of construction timber, to reduce costs (initially allocated budget) for the construction of various objects.