Floor on the logs: features of the device, distance between lags

When constructing wooden floors, lags are always required as stiffeners. Laying them on the basis of any type - wooden, primed or concrete. Their function is to support the floorboards. Installation depends on the design of the house and the choice of flooring. In this article, we'll talk about how much distance there should be between the lags. But first of all, it is necessary to introduce the reader into the essence of the question and introduce them to the basic concepts.

There are different options for the device sex floor. In addition, they themselves can differ in density and thickness. Depends on the distance between the lags from the thickness of the board, which will be laid from above, and from a number of other parameters, of which below.

More about lags

They exist in the form of a rigid beam - the foundation on which the floor covering is laid. Are made more often by wooden. But in some cases, their material can serve as metal, concrete or even plastic of solid species. True, the application of these options is still not too common.

In low-rise construction (erection of cottages and private houses), most often a wooden bar with a flooring over it is used.

What are the advantages of the sexes on the logs?

1. Provided that the distance between the floor lags is selected and observed correctly, the coating is durable and very durable.

2. The installation process is quite simple and can be done with your own hands. Before starting the repair with a special calculator you will need to calculate the required amount of wood, then the floors are simply collected manually. The entire procedure will require several days of labor.

3. Lay and level lags using the level. That is why the floor with the support on them is more equal to what is without them. Among other things, the existing curvature of the concrete floor of the panel house can be leveled by laying the log under a slope and eliminating unnecessary height differences.

4. A small gap between the base and the lags makes it possible to lay below the floor covering the necessary communications. It's not just about the electrical wiring, but also about the water pipes. Perhaps even the device of a warm water floor.

5. Even in the absence of a warming layer below the floorboards, the wooden floor, arranged with lags, has good thermal insulation properties. If such floors are also insulated, even in winter time you can completely abandon your home shoes and move around the room barefoot.

6. The arrangement of the floor on the logs additionally improves the sound insulation, which is especially important in a multi-apartment building. If a layer of insulation is laid under the floorboards, then the noise from the upper apartments may not reach the ears of the residents at all.

7. If one of the elements of the whole structure is accidentally damaged, it can be easily replaced with a completely similar floor without disassembling the floor.

The main thing is to prepare

Thus, without special material and time costs, thanks to a special calculator and carefully calculated calculation, the owner of the house, covering the floor on the logs, receives a whole set of amenities - remarkably warm and even coating with sound insulation and guarantee of no serious problems in the next 10-20 years With the floor.

Sometimes from the owners of houses you can hear complaints about the creaking coming from the wooden floors. In order to avoid this unpleasant phenomenon, during the preparation of the basis, careful attention should be given to the careful removal of sawdust and any debris. The building materials used must be pre-treated using special means that do not allow the beam to crumble. The wooden parts are fastened together and must be only suitable, carefully selected dowels and nails.

Where and how are floors applied to logs

Such a practical and universal way of installing a floor covering, like logs, can be used in a variety of conditions and for different types of bases. But each of the options has its own characteristics, which should be taken into account.

The first version of their use - laying on the base of wood. A rough wooden covering, available or reinstalled, is often reinforced and insulated by lags built into the frame of a wooden house. Sometimes it is based on large beams and large solid logs, on top of which the foundation of the future floor of wood is arranged. It is possible to lay such wooden beams even on support posts or a ribbon-type foundation.

Installation of the floors on the logs is technically quite simple, with it usually there is no difficulty even for inexperienced builders who are first starting to construct such a structure.

Other floors

The second type of installation, which is often used by the owners of private houses, is laying the log on concrete. The concrete foundation is one of the simplest and quickest ways of constructing a base under the house with your own hands. The floor on a concrete screed can take place practically in any room without restrictions on the floor or purpose. To place on it lags made of wood by hand to the master is easy enough.

The third variant of the device of a floor in the private house is to lay logs on a densely packed ground base. The labor costs for choosing this option are quite large. Usually, this method is used only in summer unheated houses and outbuildings for auxiliary purposes, where it is not necessary to maintain heat all year round.

As a basis for laying the lag, a small pit is set up, which is cleaned of soil and soil and covered with sand and gravel for strength. Laying of wooden beams is made directly on a layer of gravel, and above that a wooden floor covering is laid. Because of the ground under the floorboards, the insulation of such a floor is a rather difficult task.

In addition, there is the option of laying the beam on brick or concrete posts (piles are hammered right into the ground). In this case, in the construction of the house it is important to provide additional stiffeners. Fastening of the bar should be made more reliable than the classical one - with the help of dowels and screws.

Select lags and bars

The purpose of a wooden beam or sex lags is a long service for tens of years. But wrong selection of materials or a mistake in the calculations can disrupt all plans. For the purposes of repair and construction, the most suitable is a bar made of softwood. Optimal version - made of pine. Its wood can be rightly considered to be the easiest, inexpensive, but at the same time quite solid. Processing it is possible with your own hands.

Another breed of coniferous - larch - will require more money. Its dignity lies in the fact that larch wood practically does not suffer rotting. It is also characterized by high durability and strength. But in comparison with a pine bar larch will cost you an order of magnitude more expensive.

Other tree species (deciduous) look good in the form of decorative coatings and are often used in the manufacture of furniture. But as a material for the sexes they are used much less often.

What you need to consider

Mounting the cover of wood on the logs, take care of the impregnation of wood with an antiseptic. The remedies available today provide reliable protection of wood fibers not only from putrefaction and moisture, but also from all parasitic woodworms. In addition, they negate the risk of fire.

When calculating the distance between lags and choosing their thickness, take the material, providing the necessary margin for strength. It is assumed that the values obtained will not only be rounded up. It is required to purchase a bar a little larger than the size of which was obtained as a result of calculation. These measures are taken as a safeguard in case of an unpleasant situation - if the floor installation is performed with errors and the distance between the lags is more than necessary.

When arranging wooden floors, sometimes they do without a bar. If you are building a small, light house, it may be that the thick boards are placed on the edge. By reducing the distance between the elements of the entire structure, you add to it the reliability. Strength as a result will be no less than with the standard version.

The form of lags used in the repair and installation of floors is rectangular. The aspect ratio should be 1: 2 or 1: 1.5. The floors can be mounted and with the help of logs having a square section, but this form assumes a reduced margin of safety, and therefore they should be laid at a smaller distance relative to each other.

What is the optimal distance between the floor lags?

In order to achieve the strength and durability of the flooring to be laid, to prevent creaking and deflection of the floorboards, a preliminary calculation of the necessary distances between all elements of our design, without exception, is necessary. On the correctness of its depends not only the service life of the coating, but also the amount that we will be repaired.

The size of the log can vary depending on the place where they are to be laid. For example, repairing the floor in a block of flats with the existing overlapping of wood or concrete, you can do to fasten the boards of the floorboards with a thin bar. If you build a skeleton building, logs often serve as the necessary elements of this skeleton, that is, their function is the carrier. Since they have to withstand the weight of the structure as a whole, their size is taken much larger, and the distance between the lags also varies.

What factors should be taken into account when performing calculations

1. The thickness of the material from which the floor is mounted (particle board or plank). Clearly, the distance between the lags under the plywood is not comparable with the dimensions when laying a heavy board.

2. The load at its maximum value per square meter of coverage.

3. The approximate distance over which lags will be located.

Having determined these parameters, you can proceed with the selection of the section and the size of the boards, timber and all other materials needed during the repair or construction. By calculating the optimal numbers of distances from one element to another, it is convenient to use either a table or a special calculator.

It should, among other things, take into account that they can not be located further than 30 cm from each wall. Because of this, the distance between the lags must be corrected by the necessary corrections. When a fractional number of elements is output based on the results of calculations, rounding is performed to the larger of the sides. For example, if the calculator showed the required number of logs - 9.5, then it is optimal to take 10 pieces and slightly reduce the gaps.

The table below shows the distance between the logs to be selected depending on the initial parameters.

It is not worth saving

If you take only 9 lag for the sake of economy, the strength of the wooden floor will be reduced. The savings in this case will not be as significant as we would like, since the cost of materials in general is not too big.

The price of lag and floor boards can be asked not only in construction shops or on the Internet, but also on a sawmill where you can buy any wooden products and materials by an order of magnitude cheaper.

Savings by reducing the distance between the lags when installing the floor - not the best idea. In addition, it is important to pay attention to the dimensions of the lag and the required density. If the distance between them is increased, the floor boards may be deflected. When the floor covering is not arranged from boards, but, for example, from slabs, the latter can easily crumble or become covered with a network of cracks.

Thus, the pledge of successful repairs and guaranteeing the safety of a quality wooden floor for many years to come is an accurate calculation of all necessary dimensions (including the calculator), selection of quality suitable wood species and a competent approach to preparing the basis.