Responsible stage - laying the screed for underfloor heating

screed for underfloor heating is a very important stage in his device.

It depends on the screed correct heat distribution.

Also, if not properly filling may form defects in the coating, which have a negative impact on the entire system of floor heating.

The work on the screed for underfloor heating, you can contact the experts, or carry out all the work with his own hands.

when working with your hands all you need to know the correct device, about the kinds of ties, as well as specific technologies for each type of floor heating.

types ties

screed for underfloor heating is of three kinds:

• cement-sand (wet);
• dry;
• semi-dry.

Dry

Dry - a mixture layer of dry and bulk materials, specially designed for underfloor heating.

laying dry screed is as follows:

1. on refined waterproofing concrete foundation is laid, which can be done with plastic wrap;
2. it is necessary to pour the concrete block;
3. lay heating pipes;.
4. and lay on top of the sheet material - plasterboard, plywood, etc.

The advantages of this type of coating are:

• Ease of implementation.All work can make even a novice builder;
• Not required time for drying.All the work can be continued immediately after installation;
• used concrete block has excellent heat and sound insulation;
• The bulk layer wiring can be placed.

Despite the advantages of a dry method has disadvantages:

• high probability of occurrence in the granular layer of rodents;
• used plasterboard partitions does not stand out of the blocks or bricks, with the result that the floor can occur punching.

Semi-dry Semi-dry screed is different from the wet with a little water.Due to this factor, semi-dry screed hardens quickly and is more durable.

The structure of added polymer modifiers and reinforcing layer.

The advantages of this type of coverage may include: a small amount of time to harden and dry compared to the wet screed, and no shrinkage, so it does not form cracks and voids.

for laying semi-dry coating with your hands necessary to prepare the surface, removing any irregularities and to lay the insulation, which can be used cork and foil penofol.

The next step is making holes on each square meter of insulation.

also along the perimeter to be left free strip width not exceeding 15 cm, which will preserve the strength and warmth of the entire system.

After that, the laying of pipes or underfloor heating cable, then you need to put the prepared solution.

For maximum strength is recommended fibrovolokno.

final step is polishing the top coat layer to achieve a flat surface.

To check the availability of the solution you need to take a handful into a fist, and if the jet of water is released, it is too much moisture.

When properly prepared solution under compression should form a tight, do not break up the lump.

Wet

wet screed is the most common type of cover under floor heating.

However, laying his hands need to have some knowledge and experience as well as wet casting has many features and is the most difficult of all kinds of ties.

The composition of the solution consists of cement, sand and water.

solution should be used to mark the cement not lower the M-300 and fraction 3-5 mm.

plasticizer for screed floor heating is used necessarily.

Special plasticizers in the solution will tie much strong and ductile.They are added to the composition, based on 1 liter of 0.6-1 square meter.

Without such an additive coating thickness should not be less than 5 cm. The solution should not be liquid, as can occur severe shrinkage and damage to the underfloor heating system.

When paving in the room more than 40 sqm in addition to the solution you need to add fibrovolokno, which will increase the strength of the floor.

concrete screed requires a long drying and curing.This period is about 30 days.

Including underfloor heating system should not be to the complete drying of the floor.On the second day of laying surface must be watered with water and cover with plastic wrap.

To prevent cracking every three days should be watered with water floor.

stacking technology

tie their own hands mount technology is different for each type of floor heating, which is divided into water and electric.

Consider stacking technology concrete screed, because it is the most difficult.

technology for water floor

screed water floor installation begins with the technological gap with the damper tape.Process prevent backlash movement of the coating when heated.

Damper gap is made between the individual circuits, the maximum area of ​​which 40 sq.m.

insulation base on the next stage.A common option is floor insulation foam water, the thickness of which must be at least 5 cm.

After laying insulation layer is made of the heating circuit in a specific pattern.To do this, you can use special plates made of polystyrene foam, which have a special attachment.

Video:

After laying the pipes need to put beacons and pour concrete solution on them.A thickness of 45 - 65 mm above the pipe.

However modernized special mixtures intended for floor heating, make it possible to fill in the solution by 20 mm above the pipe.Before using such mixtures need to carefully read the instructions.

very important point is that, after pouring the concrete floor screed a water system must be pressurized to complete solidification of the screed.

technology for electric floor

Electric floors are divided into systems with cable and heating element of the system with infrared film.

Underfloor heating with infrared film is forbidden to install a concrete floor.

When using infrared floor apply certain types of surface finishes that need to be laid directly on the infrared film or film stacked sheets of gypsum fiber board, and the top finishing coat.

Video:

electric screed floor with their hands begins with the preparation of the grounds on which an individual styling is made of the heating cable or cable mat.

Cable mats differ in that they have a reinforcing grid, and using an individual cable, first you need to make laying the grid, which will be attached cable.

further feature electric floor installation is that the heating elements should be located only in areas where people walk.

under furniture heating elements are not placed.

All other steps are similar to installation of water floor.

necessary to leave the technological gaps, then put a layer of insulation, produce reinforcement, lay the cable and pour the solution.

thickness of the coating to the dwelling not exceeding 100 mm, for retail space thickness should not exceed 200 mm.

concrete thickness of 300 mm is used only in aircraft hangars.

Make tie for water or electric floor with your hands is not difficult, the main thing - to choose makeup that is a major step in the device ties, and, of course, know the technology.

the entire process must be approached responsibly as qualitative laying screed under floor heating - the key to long operation of the entire system.