When choosing materials for building a house, many prefer the classic option - wood. In this house it is easy to breathe, it is environmentally friendly, it keeps the heat well, quickly warms up.
Advantages of the beam as a building material
If before the material for wooden houses served only logs, the modern market offers a wide variety: in addition to logs, including rounded, you can use profiled or glued beam. Moreover, more and more people are trying to build their houses out of the timber. The advantages of such a building material are:
- geometrically accurate profile;
- smooth wall surface;
- strong jointing of parts, eliminating moisture penetration between them, preventing rotting of the structure, the appearance of cracks;
- easy installation;
- aesthetic appearance of the constructed house.
Profiled beam: the features of manufacturing
The most common material for low-rise construction is a profiled beam. It is a material from a solid massif, mainly from coniferous species of wood, having a certain profile. Get it planing and milling. After completing the workpiece, it is cleaned, achieving a cleanliness class no less than that of a lining. To make a frame or kit for the timber house was made in accordance with the exact dimensions and the correct geometric shape, the work should be performed on high-precision equipment. Therefore, it is better to purchase profiled timber from large companies that are known and proven in the market.
Glued beam: features of
production Glued beam is also quite common for the construction of private houses. Produce it as follows: coniferous wood( larch, spruce, pine, cedar) is sawn into individual boards( lamellas), which are scraped before smoothness is acquired, then glued with special glue, dried and re-scraped, and then placed under a press. One of the advantages of glued timber is that its length can reach 18 m.
Comparison of glued and profiled beam according to
characteristics Both glued and profiled timber have their defenders and opponents. To determine the choice of the type of timber for construction, you need to know the features of both, their advantages and disadvantages. Consider and compare the main characteristics of these materials.
Strength of
The profiled timber is inferior in strength to glued because it is produced by cutting off the outside of the logs, which is much stronger than the inside. Glued beam gets additional strength in the manufacturing process: gluing, pressing. Therefore, it is almost not subject to deformation.
Moisture
Glued beam is produced with a moisture content of 11-14%, because of which it practically does not dry out( shrinkage 1%).The profiled bar is characterized by natural moisture, but another option is possible - drying by special technologies up to 18-20%.This bar has moisture, the same throughout the entire length, which gives it greater strength, resistance to decay and less shrinkage. It should be noted that the construction of glued beams after a while absorbs moisture from the environment, which brings it closer to the dry profiled beam.
Cost of
The cost of profiled beam is much less than glued( almost twice).This is due to the peculiarities of manufacturing materials. But you do not need to forget that the facades of glued beams do not need a cladding. Taking into account this fact, the cost of building a house from a profiled beam along with the exterior finish can be compared with the cost of a house made of laminated veneer lumber.
Shrinkage, susceptibility to cracking
As for the construction of a profiled beam, most often of natural moisture, its shrinkage and shrinkage occurs already in the finished product - the house or cottage roof, which is a fairly long process, at least a year. But the timber bar is less prone to cracking than the glued material, which in turn gives a minimal shrinkage.
Environmentally friendly
Solid wood bar is a completely ecological material that preserves all its unique properties, for example, the ability to disinfect the air. Process the profiled bar only with special compounds to prevent burning, rotting.
Glued beam is produced using glue of different types: polyurethane( PU), polyvinyl acetate( PVA) or MUF.According to the degree of danger, glues are divided into groups and can be safe( FC0), potentially hazardous( FC1), unfit for use in living areas, dangerous( FC2).A glue containing less than 0.5 mg / l of formaldehyde is considered to be safe. Of course, the higher the quality of the adhesive and its safety, the greater its cost. When using a low-quality glue, the bar can eventually become unstuck.
Let's sum up
The building from the timber is very beautiful, comfortable and durable. What kind of timber to choose, each decides by itself, considering that the profiled bar is cheaper, environmentally friendly and less cracked, and the glued beam is stronger, does not require exterior finish and shrinkage time. In any case, it is necessary to purchase these building materials from well-known manufacturers, so that the quality corresponds to the price.
