floor screed with expanded clay - work methods and technology

floor screed with expanded clay with their hands

can not imagine quality repairs without perfectly smooth floor - collateral subsequent technically correct paving.In turn, when blunders builders and significant differences of lower level surfaces to make the installation of door designs and drywall partitions, as well as a variety of tricks required for finishing walls.How to create a flat surface and get rid of possible errors?The answer to this question will be screed with expanded clay, which allows not only to achieve perfect alignment, but also improve the insulating characteristics.Expanded clay reduces sound vibrations and excellent protection against heat, which allows to reduce costs in the winter season and to do without air conditioning - in the summer.

already made screed

floor screed with expanded clay most rational under the following conditions:

1. difference floor level in the room exceeds 10 cm,
2. -zhelezobetonnye or concrete slabs lying at the base for laying the floor,
3. presence flooring, not admitting flaws subfloor, which affect its appearance and quality (floating floors made of natural materials, ceramic tiles, parquet or even practical linoleum),
4. install infrared or electric heating systems,
5. needto reduce the consumption of cement mortar,
6. increase soundproofing,
7. placing communications at the lower floor slab.

screed with expanded clay perfectly combines lightness and strength.Expanded clay pellets, crushed stone, sand and aggregate to minimize the load on the ceiling.Due to the low specific weight of the material worthy of the floor can withstand static and dynamic loads, so that over the long-term intensive use of its quality did not suffer.

Priority expanded clay due to the specifics of its production.His material is fusible finely divided clay, foamed in a special way, is exposed to high-temperature firing.As a result it becomes light receiving faces having a strong outer shell, a moisture barrier.Low thermal conductivity and excellent thermal insulation qualities are explained by the presence of cavities and bubbles.By the way, they also explains the low specific weight.

Keramzit photo

according to the criteria as fractional size and the presence of acute-angled elements of expanded clay represented:

- sand, the particles of which up to 5 mm, obtained after screened burnt amorphous mass,

- gravel with his round and oval particlesup to 40 mm in diameter,

- crushed stone with angular particles up to 40 mm in diameter.

often used for such a screed mixture factional through which insulation and leveling layer increases its density.And as is usually expanded clay layer covers the self-leveling floor, gypsum sheets or other material for the alignment, size and configuration of the particles are not important.However, to minimize the weight of the structure, should not use expanded clay sand, as if laying the material density increases, weight also increases.But in some cases, for example when laid piece parquet requires only small fraction material.

The figure shows a floor leveling process using expanded clay sand

If we have to deal with the most difficult section, expanded clay is better to use sand as the most giving little shrinkage.

In modern construction, repair and restoration works are three ways Ties:

• leveling and floor insulation using expanded clay and cement-sand mortar,
• setting self-leveling floor with the use of expanded clay aggregate,
• dry screed with expanded clay.

consider each of them in detail.

leveling and floor insulation using expanded clay and cement-sand mortar.

leveling and floor insulation using expanded clay and cement-sand mortar.

To align the rough floor, it is possible to apply to the construction and repair organization, and it is possible, without waiting for the experts to carry out this simple, but time consuming process yourself by purchasing the right amount of material.To this end, it is important to calculate the costs, based on the data provided in the manufacturer's instructions.Knowing the technical information about the material and the floor area aligned, it is easy to calculate the need for the material and make an estimate.

floor Alignment traditionally begins with the dismantling of the flooring and the preparation of the cultivated area.Gender dismantled to the ground and then removed construction debris.Carefully smooth out the hole in the floor, and there are cables and wires wrapped in polythene.Places engages tightly wrapped with plastic insulation tape, protecting them from falling crumbs, dust, or solution.

next step - waterproofing foundation, also apply when laying self-leveling floors.You can use special mastic, but as a rule, use a polyethylene film Izolan or flashing.With waterproof materials

1. damper layer is created between the wall and the screed,
2. solution prevents adhesion to building materials, often resulting in cracking upon drying screed,
3. reduced transmission of the sound waves coming from the coupler to the partitions and supporting structures.

Without waterproofing can not be avoided, if you have to cover the screed insulation, flooring organize, process overlap in contact with the basement.Stacking of rolled heat-insulating materials 15 cm higher than the level of the mark-up tie.Once work on the floor covering device are completed, the materials are cut at the level of the upper plane.

At the last stage are put beacons - alignment targets on the same level surface.For this ueli can use ordinary screws or special metal devices T-shape, specifically designed for the arrangement of the screed.Proper razmёtka easily done using an inexpensive laser level or, at worst, an elementary homemade gidrourovnya made of a transparent hose.Lighthouses are set according to the marks left on the walls in the process of implementation of the markings.

screed with expanded clay poured in two ways:

- goes first filling, tamping and leveling expanded clay aggregate, the surface of which does not reach the floor, marked by beacons.The distance from the layer of expanded clay to marks should not be more than 2 cm. Then the entire treated area is filled with cement "milk" fixing expanded clay granules.After they harden, you can fill them with cement mortar comprising cement and sifted sand marking M-4.To eliminate errors with proportions, and you can use ready-mix to the screed;

- first expanded clay added to the solution, mixing it with a mixer construction.To make it more convenient to apply the mixture, the floor using beacons is divided into segments which are processed sequentially.Laid expanded clay mixture leveled adaptation-rule, and in the place of formation of pits and puddles added cement.

But in any case, a floor screed is carried out, starting with any of the walls and moving to the door openings.And both methods are suitable to arrange the draft floor under any floor covering.

Installing self-leveling floor with the use of expanded clay aggregate.

With self-leveling floor can form a perfectly flat surface due to the composition's ability to self-leveling.Fully a half hardens after a maximum of a week, which is twice to three times faster than the previous method.Currently sold ready-mixed with expanded clay for device self-leveling floor, includes in its composition additives that improve the characteristics of the floor structure.In the absence of the finished composition screed begins with a uniform distribution of expanded clay are scattered throughout the area.When placing concrete block on a dry basis, to carry out the waterproofing is not required.Tamped and aligned as in the previous method, the material is covered with polyethylene film or new insulation.Everything is filled with a solution from which expel excess air with a spiked roller.

Dry screed with expanded clay.

This screed most fast, cheap and practical.for her work include the following steps:

1. markup future floor height,
2. laying a waterproofing layer on the substrate,
3. mount defimernoy film on the treated floor perimeter,
4. backfilling, compaction and leveling expanded clay layer,
5. installation on top of expanded clay gypsum sheets, processing of PVC glue joints and fixing elements by means of screws.

Conducted relying on technological requirements and construction standards for work permit for a long time to serve the floor below it communication systems and flooring.Such a floor for a long time and do not need a cosmetic overhaul.

Video - expanded clay floor screed