Lobi usually serve as a support for multilayer structures from wood. They are manufactured mainly of polymer or wood. Significantly less frequent lags made of metal or reinforced concrete. In general, lags are called the transverse beams of the floor, which the finish coating is lined up. Wooden lags are good because of their small price. Polymer materials are valued for the simplicity and speed of installation. It is worth saying that the masters engaged in chopped houses are still instead of a smooth logs hanging from three sides. These logs are similarly called lags, but they are much cheaper. In any case, whatever material is used for installation, before laying a wooden floor to lags, the boards need to hold at least a year in normal humidity. On the peculiarities of the floor of the wooden floor on the lags - hereinafter.
Content
Benefits of material
Lags for wood floor have several essential functional advantages:
- Lagges for the floor in a wooden house have good thermal insulation, thereby decreasing heat loss.
- In addition, lagows allow you to equip ventilated underground niches, where you can, for example, lay the desired engineering communications.
- In addition, they allow us to correctly redistribute the load on the ceiling layers below.
- Thanks to the lags, it is possible to create a smooth surface for floorboards flooring.
- It is also worth noting that when damaged individual structures, they can be easily replaced, as the bars can be purchased in any construction store.
Device floor by lags in a wooden house
How to choose a cross section
The aspect ratio of the lags for lags should be 2: 1.5. In the event that the floor is planned to put on wooden beams, then there is another requirement to lags. Their sizes should be selected depending on the distance between the carrier supports. If you want to warm the floor using a layer of thermal insulation, then there is a gap of 3.5 mm for ventilation between the insulation and the bottom side of the finite coating. Therefore, when buying a bar, you need to take into account the magnitude of this gap.
To determine the section, the lag can use the table:
If the laid floor is used as a support to use the soil, then it is necessary to take into account the thickness of the roller, which is laid on the cranial bar attached to the lags. In general, it is better to take a ram with a cross section a little more than the calculated value. If the floor is done above the ground base, you can not use the dear large cross section. In this case, it is allowed to put brick supports. The step between them should be about 1.2 m. It should be taken into account the level of groundwater. If it is below 2 m, then a silicate brick can still be used as a material for supports.
Between the supports and elements of the timber should be the same distance. This is how competent laying is done. Before building supports, a foundation is needed. Moreover, a separate basis for each brick beam is made of 400 per 400 mm. It is allowed to use a ribbon foundation that will cover several such supports at once. In this case, 2 bricks should be in each row. But the pillar's height depends on the level of support elements for the beam.
Rules of laying Lag.
When carrying out installation work, you need to adhere to some rules:
- The surface that is preparing for lags must be previously able to clean and apply a primer layer on it.
- Available wooden parts need to dry and treat a suitable antiseptic.
- Scolar, sand or fiberboard use as sound insulation material.
- After graduating from laying the floor, the horizontality of lag lags must be verified according to the rule that is applied over the beams. As a rule, it is convenient to use a long level. If there is no lumen between the floor and beams, then the works were performed correctly. If there is a lumen, the surface must be aligned by sludgeing the sand under the lags.
- Lags are desirable to install, focusing on the placement of the window opening. In addition, between them and the walls should be a distance of no more than 350 mm.
- Lags should first align, and only after that they can be laid wooden floor.
- Boards must be fixed on each lag.
- To prevent the split boards, the holes under the fasteners are made in advance. If self-tapping screws are used as a fastening of the wooden floor to lags, then a very thin drill is used to do the holes.
Laying lag on concrete base
There are several methods of laying lag on concrete. The first method is to use linings, and the second is a cement screed. Consider more. So, in the first case, lining from solid material of different thicknesses are used. They fit between lags and concrete to level the floor level. This method cannot be called the best. But despite this, it is used quite often. The disadvantage is that lining over time may be deformed. This will lead to the appearance of the screenshot and the curvature of the floor.
In the second case, as already mentioned, a cement screed is used. The main task is to align the facial floor surface. Lags are allowed to lay on the surface only after the screed is filled. This will prevent floor strain. Screed as a support will be durable and quite reliable. But before laying the lags on the concrete, it is necessary to protect against moisture. Polyethylene film is used for this purpose.
In addition to waterproofing, there will be sound insulation. It is necessary in order to pay off shock noise. Soundproofing gaskets are stacked right under the lags. It is allowed to use cork substrates. As for the screed, it can be cement or dry. When all this is done, you can start laying the lags. As a material, it is desirable to take a bar, the length of which is the same as the length of the room. In the absence of the possibility to purchase material of the desired size, you should get a board with a length of at least 2.1 m.
In order for the design to be sufficiently stable, the lags are better not to lay on a soft insulation. It is advisable to wall insulating material between lags in the form of a canvase. In the presence of free slots, they can be seen by extra trimming, which remained from the insulation.
Installation of lag for floor in a wooden house
Time has shown that wood is one of the best materials used for floor covering. If the wooden floor is laid correctly, he will last long enough. During this period, it remains its appearance. In addition, the wooden floor is the most eco-friendly. Of the advantages of such a coating, it is still worth noting the simplicity of surface alignment. Wooden floor also has good sound and thermal insulation.
For laying from tools you will need:
- axe,
- perforator
- building level,
- hammer with a nail-holder
- saw,
- screwdriver
- drill and wrench.
Also need a floorboard, lags and insulation. The size of the lag for the wooden floor takes 50 by 500 mm. Self-tapping screws, anchor bolts and nails will be created from the fasteners. When everything is available, the lags are stacked on sound insulation material with the desired distance. The surface should be sufficiently flat, which can be monitored using a construction level. Loba concrete is attached to anchors. Boards are fixed on lags with a dowel.
Installation of wooden lag for floor
First of all, it is necessary to prepare the basis. At the same time, instead of snowing sand, support brick poles are built. Each support column is a separate construction with its own foundation. For fill, it is necessary to pre-lay a working surface. You can put the boarding ramps in different ways. The method of their installation depends on the type of room where the work is carried out. So, in the recreation room, the flooring is best located parallel to the light flow. In the bath can be placed parallel to the long wall. On the veranda, the floorboard is optimally located at right angles.
In some cases, an additional lag is not mounted above the lags. So, sometimes lags are best put across the board. When calculating the size and step of the incidence of lag, it is necessary to take into account the position of the columns.
You can use the table:
We will analyze for details the flooring device on wooden lags. As a rule, the installation of bars start from one of the walls. At the same time, between the first beam and the wall, it is necessary to leave the gap of at least 300 mm and no more than 200 mm. The same applies to the last lags, which will be the most closest to the opposite wall. By the way, it should not pour a separate foundation for each support. It is allowed to pour only one row for several supports at once.
The most important thing is that Basis comes out for the contour of the support around the perimeter at least 10 mm, and better at 45 mm. Therefore, the formwork must be performed in such a way that the formation of the foundation is in width and length is more than 30-90 mm. The same applies to the fill of the basis for each support.
The concrete base is flooded as follows. First, the soil is trambed. Then the formwork with sides with a height of 100 mm is satisfied. Next, the reinforced grid is laid on the bottom. After that, concrete is poured. Next are waiting for about three days until concrete freezes. Then the foundation is covered with polyethylene as waterproofing. And finally, build supports.
When the cold floor is erected under it, there remains space that should be covered with a clay or slag. But it should not be completely filled - you need to leave about 50 mm on top. To ensure normal ventilation of the underground space around the perimeter, the technological gap leaves. In plinths that close the gaps near the walls, it is necessary to make ventilation holes. According to construction standards for every 15 sq.m. The plinth must be two holes. Thus, the total area of \u200b\u200bthe holes is obtained from 20 to 30 square meters. See that mice do not penetrate the house, the holes should be closed with a thin decorative grid of non-ferrous metal.
