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August 12, 2017 18:06

High-quality substrate for laying laminate flooring on the concrete floor

High-quality substrate for laying laminate flooring on the concrete floor

Base layers under laminated onto a concrete floor solve several issues concerning the quality of future floor covering and comfort of use.

application of additional flooring allows for perfect alignment of the base under the base laminate.

In addition, the substrate, laid their hands, a good way to not only extend the life of the laminate floor, but also to make it comfortable to move.

substrate has sound deadening properties, further carries a heat-insulating function.

substrate also serves as a cushioning layer between the concrete base and the laminate, thus finishing Grinding does not bend, not looking surprised on the concrete floor and does not allow the product to deform the locks.


  • substrates Options on the floor under the laminate
    • substrates made of polyethylene foam
    • cork underlay for laminate
    • substrate bitumen cork
    • substrate of plywood
  • Substrate Preparation andlaying laminate substrate under
  • How to cut out the plywood under the laminate?
  • Grinding plywood flooring

Options on the floor under the laminate substrates

Before you buy a substrate on a concrete floor under a laminate, it is worth to get acquainted with them and a variety of parameters.

Then proceed to independently choose the best option in the first place, based on the existing foundation of the base floor.


To properly equip the concrete floor with your hands, you need to pay attention to the irregularities of the floor base.

If the concrete floor is in almost perfect condition, its alignment is performed with the substrate thickness of 2 mm.

If the subfloor is uneven, then, since small differences visually noticeable to the plane, thickness of the substrate is increased to 3 mm.

It is worth noting: the recommendations of the laminate manufacturer, associated with the need to use the substrate on its floor the same firm, are not guarantees of future quality flooring.

First of all, it is the characteristics of the existing foundation, which, as mentioned above, it is necessary to rely when choosing a product.

substrates made of polyethylene foam

polyethylene foam materials are in great demand due to the universal properties, which they received at the factory.

If you put such a substrate under a laminate, you can not be afraid that in time her attack insects, rodents, or a fungus.

Polyethylene Substrate

addition polyethylene foam has a high waterproofing and thermal insulation properties.Usually, such a substrate thickness of 2-3 mm.

Stela foamed product easily with your hands, and you can watch the material savings, as there is practically no waste.

Today it is possible to find polyethylene foam substrate, the base of which complements the metallized film on the construction market.

cork underlay for laminate

produced in roll and sheet form, it is of high quality and the ability to save in the process of operating its original linear dimensions and specifications.

stele cork backing with their hands is recommended for floating floors, and equip it with the use of "warm floor".

Cork substrate

If you lay cork flooring in the rough floor under the laminate, it is possible to carry out simultaneously leveling and insulation.

But as cork backing has a high cost, it is inappropriate to use it to level the uneven floor under the cheap laminate flooring, useful life is insignificant.

substrate bitumen cork

film of bitumen-type of cork is made with the use of kraft paper, for which as a binder additive the bitumen is taken.

Its surface is ennobled cork with the size of 2-3 mm.Using the structure of the product bitumen allows the flooring a good level of moisture resistance.

The substrate of bituminous cork

Bitumen-cork substrate refers to those materials that are recommended to be laid under the road surface finish.

Putting a substrate at a cheap laminate, as well as the above cork - a more expensive.

substrate of plywood

substrate under a laminate plywood - another way to carry out the alignment of the sub-floor, to increase its rigidity and prevent creaking.

usually used for this purpose plywood with a thickness of 10 mm, provided that the base is in an almost satisfactory.

Otherwise, plywood thickness should be about 16-20 mm, it can be increased further layer if put heat or sound insulation.

Laying plywood substrate

Substrate Preparation and laying the substrate under a laminate

Laying laminate onto the concrete floor involves a few stages of the work.So how to lay laminate flooring on uneven floor is not recommended, it is necessary to align.

for this purpose can be used as a substrate of plywood.But before you lay it on the base, it is required to perform preparatory work.

Preparing base subfloor provides cleaning and priming the surface:

  • The concrete surface is cleaned from dust with a vacuum cleaner, you can perform this procedure ordinary broom.But it is not necessary to humidify it because the moisture absorbs and tie, which subsequently affect the plywood structure.If you are on a concrete surface of old layers of paint or putty, they are removed, cracked cement.Too uneven floor screed a fresh update.In this case, it will be necessary to wait until the alignment conducted completely dry;Next
  • base subjected to the primer, using impregnating a mastic-glue.The properties of this composition will allow the base to completely clean from dust, by gluing it to the surface of the fine particles;give strength screed due to penetration of the primer into its structure;increase its adhesive capacity on the future coverage.In addition, a primer - a good way to improve the performance of water resistance of the concrete floor, and at the same time reduce adhesive consumption for the subsequent bonding of plywood sheets.Once the rough concrete floor will be brought to a satisfactory state, once it is possible to lay the plywood.

plywood mount technology on the concrete floor under the laminate takes place in the following sequence:

  1. Using a spatula-comb on a concrete screed glue is applied, the thickness of its layer must not be less than 2 mm.Usually, the right amount of adhesive substance is determined clearance between the serrated spatula;
  2. plywood segments are placed on the adhesive.In order to squeeze out from under them by air products are heavy roller;
  3. using dowels and screws, plywood permanently fixed to the coupler, and the screws length must be more than 3 times than the thickness of the base.The distance between the fastening elements can be 15-20 cm.

More detailed information will provide the following video.


How to cut out the plywood under the laminate?

Preparation of plywood sheets to the installation must be carried out before, both to be held priming base.

Standard product sheets have "internal stress", due to which their surface is not always smooth.

Zoom indicator of internal tensions, and at the same time simplify the process of laying the plywood on concrete or other support can be achieved by cutting the material into squares.

As a result, segments of plywood will get new options of 600x600 mm and 750h750 mm.

Using small squares plywood as a substrate, in contrast to the use of standard sheets provides advantages.

Firstly, plywood base will have more joints that have a positive impact on the level of humidity and temperature balance.

Second, the product will be better able to lie down to the screed and thereby eliminate the occurrence of air pockets.

Leveling concrete floor must be intact pieces of the product.

Stratified plywood pieces is rejected immediately, if using them and be able to level the uneven floor, the operation of such a surface will be short-lived.

Preparations already sawn veneer products also includes numbering, which is done directly in the fitting sheets under the work area.

segments of plywood laid on the concrete floor in the right order, considering niches and ledges.They are then enumerated by, after which the stacking order of their transfer to the sheet of paper.

This training veneer finishes.


very important when fitting sheets ensure that between them there is a gap of 8-10 mm, and the offset from the wall is 15-20 mm.

the sheet is necessary to lay on the concrete floor with a shift to a four-seam sheet dissolved not gathered together.

Such a method will give the opportunity to more effectively leveling screed.

Grinding plywood flooring

Before laying the laminate will be carried out on a concrete floor, plywood floor surface must be carefully sanded.

This technology will provide a perfectly flat base on which to lay laminate.

grinding operation is performed using a machine for grinding parquet, equipped with a large abrasive sandpaper.

As a result of the grinding to eliminate minor differences in elevation between the stacked sheets.Only after that the concrete surface under preparation laminate stacking is completed.

The foregoing complement thematic video.