What is a screed?
Screed is a layer in the building structures necessary for accepting and transferring loads to the lower layer of heat or sound insulation. It is used with insufficient rigidity of the underlying layer to create a flat surface that ensures the laying of overlying layers( waterproofing the roof or covering the parquet).
Not quite clear definition, is it? If to generalize this is the layer between the base and the coating, which serves as the basis for the coating. Sometimes the definition of "tender" is used.
Types of screeds, what kind of floor screed should I choose?
Before thinking about the option of "tender" you need to determine its exact purpose. That is, it is necessary to look in SNiP 2.03.13-88 "Floors".In particular, it is possible to know in which specific cases it is applied, whether a screed is needed on a wooden floor;what class of concrete is better to use. After reading the SNIP, you need to determine with a specific option.
So, what kind of "tenders" exist:
- The team consists of elements that are mounted from large-sized sheets and slabs - plywood, fiberboard, particleboard, gypsum board. The design of these parts is not large, so one person can install.
The use of GVL materials is considered to be an interesting method of assembling a screed. In this case, cellulose( cellulose pulp) is used, which provides high strength, fire resistance and moisture resistance. Specifications GVL: thickness 10, 12 mm, width 1.2 m and length from 2.5 to 3 m. Applicable for the device of parquets, suspended ceilings, interior partitions, wall cladding, fireproof coatings in buildings. - Usual is a screed that adheres to the base. A standard example is the CP tender, which is poured directly on the floor slabs without films and foreign layers( expanded clay, sand, etc.) and adhered to this base.
- Monolithic - at this type of work heavy cement-sand concrete is used: CSP( on sand), on crushed stone, foam concrete, expanded clay, foam concrete, etc.
You probably noticed that the main material is concrete, which is reinforced. This allows him to work well both on stretching( thanks to the armature) and on squeezing.
But there is one more option. With the use of expanded clay.
What is expanded clay? How to make a floor screed with expanded clay?
Expanded claydite is a highly porous, lightweight, eco-friendly material made of foamed and fired ordinary clay.
The use of expanded clay concrete is much better than cement-sand concrete. Immediately gives a number of advantages: especially by weight, heat and noise insulation. According to chemical characteristics keramzitobeton has an advantage over all kinds of lightweight concrete. Due to its high porosity, claydite concrete actually "breathes", which allows you to control( regulate) the humidity of the air. This version of the design is not corroded, in fact it does not rot and is refractory. It has the positive properties of wood and stone, and at the same time.
One of the greatest amenities of work is the local preparation of the solution, which greatly reduces the cost. Claydite due to its small weight is easily delivered to any floor and is quite cheap, which saves both energy and financial costs.
Clamping with expanded clay allows to level a large difference in heights. It is convenient to lay or floor any floor covering. This option will last for many years, without requiring care.
Screed on the wooden floor
A special place in the device "tenders" is the screed on the wooden floor. If the above options for work can be done with your own hands, then specialists should be involved in the work with wood flooring / parquet.
The main problem is to ensure the smoothness of the deck, so you have to check each board for defects. Knot, rot in the tree - all this can damage your future parquet floor.
We also recommend that you contact a specialist when making floor screeds in the bathroom. Any of your wrong actions can lead to the flooding of neighbors.
Cost of works
The cost of work on the implementation of the shrinkage of parquet can vary greatly depending on the region. It should be understood that the main costs are for the material, so it is necessary to calculate the materials for the floor screed in advance. On various Internet resources there are online calculators that allow you to determine the amount of material needed for your square meters.
Screed is quite laborious and energy-intensive process. There are many companies offering assistance in this difficult matter, and if you are not sure that you can do everything well, then it is better to contact these firms. After all, agree, on the curve is not too pleasant to walk?