During the repair, the floor in the apartment must always be waterproofed before the screed. This measure, during the period of repair work, ensures that the floors are protected from the effects of water in the solution. During operation, the waterproofing coating protects against emergency leaks of engineering networks and from moisture penetration from the basement, if it is the first floor. This is especially true when creating a screed for a warm water floor. The thickness of the screed does not play any role. Waterproofing cannot be done without flooring in kitchens, bathrooms, bathrooms and private homes.
Waterproofing will reliably protect your floor from leaks
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Waterproofing the floor in the apartment in front of the screed: types and their features
Before you start doing floor screed, you need to decide on the type of waterproofing material. There are several of them:
- rolls have the form of sheets of fiberglass or cardboard, twisted into rolls, impregnated with bituminous compounds. Such material is deposited using bitumen mastic, heated with a burner. Some materials have a self-adhesive backing. This type of waterproofing performs its main function very well, but is very inconvenient in the device. A fire source is required;
Profiled drainage membrane made of polymer resins perfectly performs the functions of hydro and sound insulation
Useful advice! You cannot use cardboard-based materials to create waterproofing the floor in the apartment in front of the screed. They will not be able to provide long and reliable protection in the event of a serious leak.
- liquid coating materials. They look like bituminous mastics with admixtures of rubber or polymer composition. Synthetic resin made from such materials is the most reliable and durable material. Such waterproofing is applied using a roller or a regular brush. The material has excellent waterproofing properties. It is easy to apply. Of the shortcomings, it should be noted only the inconvenience caused by the fact that bituminous resins stain everything that comes into contact with them. Moreover, bitumen is then very difficult to wash from clothes;
Bituminous mastic has excellent waterproofing properties
- dry waterproofing materials resemble plaster mixes. They are produced in the form of a powder, which is diluted with the required amount of water to the consistency of sour cream. Such waterproofing is applied with a spatula in several layers, cross to cross. Their number is from 1 to 3. Requires 1.5 kg of dry mix per 1 m² floor in the apartment... That is, for a room of 17 m², it is enough to purchase 1 bag of mixture weighing 25 kg;
- penetrating mixtures.This is a special type of waterproofing materials that are successfully used for waterproofing the floor in the apartment in front of the screed. Its action is based on the ability to penetrate into the structure of concrete and form there polycrystalline formations that fill all the pores. The surface of the screed itself is also treated with the same material, doubling the protection.
Penetrating mixtures have the ability to penetrate into the structure of concrete and form there polycrystalline formations that fill all the pores
Useful advice! If beacons are used for floor screed, then the places of their attachment to the base must be waterproofed. For this, it is most convenient to use bituminous mastics. Since roll and coating waterproofing materials are most often found in the production of repair and construction work, the technology of their installation should be considered in more detail.
The procedure for waterproofing roll materials
Laying of this type of waterproofing layer is carried out in compliance with a certain technology and sequence of actions. First of all, the surface is cleaned of dirt, dust and impurities. After that, large irregularities are closed with a putty. When the base is prepared, the damper tape is installed. It is needed to compensate for the expansion of concrete during hardening and further operation. It is attached along the perimeter at the bottom of the walls.
A gas burner is used to fix the bitumen roll film on the surface.
Now that everything is ready, you can start the production of waterproofing work. Floor slabs are treated with a mastic primer, which ensures good adhesion to the material. Such a liquid is usually offered by sellers in hardware stores when purchasing waterproofing materials.
Useful advice! There is no need to spend money on a primer when waterproofing with polymer mastics. They already have excellent adhesion to concrete. For reliability, you can treat the slabs with penetrating solutions.
Self-adhesive bitumen waterproofing film is ideal for subsequent laying of ceramic tiles
The strips of rolled material are spread over the entire surface of the base of the room with an overlap. They go over each other by 10 cm, and on the walls by 15 cm. It is better to glue the joints with bituminous mastic. If the material is weldable, then a gas torch is used to fix it to the surface. Film materials for waterproofing the floor in the apartment in front of the screed are also overlapped, but the joints are heated for welding with a construction hairdryer.
After the waterproofing is installed, you can start doing floor screed on the lighthouses with your own hands. Video of this process is easy to find on the net.
When laying a warm water floor waterproofing is required
Waterproofing with coating materials
The use of this type of waterproofing must be approached very responsibly. Very careful preparation of the substrate is required. Dust and dirt can be removed with a conventional vacuum cleaner. No sharp protrusions or pebbles should be left. Chemically active stains must be removed from the surface, as they can damage the coating waterproofing layer.
The disadvantage of bituminous mastic is that bituminous resins stain everything that comes into contact with them, and practically do not wash off clothes
After cleaning, the floor surface is treated with a primer. It is desirable for this to use the composition of the same company as the mastic itself. It is applied in one layer with a brush, paying particular attention to the joints of the floor and walls, as well as the places of passage of engineering communications. The primer dries up 2 hours after application.
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The mastic is applied with a roller or wide brush. In this case, you need to make several layers. An indispensable condition is the complete drying of the previous layer. Each subsequent layer is applied perpendicular to the previous one. A small brush is used to smear around the pipes.
Before using waterproofing and subsequent screed, it is necessary to seal all the cracks in the base of the floor
Final drying of waterproofing floor in the apartment before the screed occurs 2 days after the end of the work. To achieve the best effect, it is necessary to use not one but several types of waterproofing coatings. The surface of floor slabs can be treated with compounds for penetrating waterproofing, then coat with bituminous mastic, on which to glue roll materials. This "cake" gives almost 100% guarantee against leakage.
Useful advice! When laying reinforcement under a concrete screed on waterproofing, do not use wire. Sharp edges can damage the layer. It is best to use nylon cable ties for this. They can be found in electrical engineering for bonding wires in bundles. These fixtures provide a secure fit and cannot damage the waterproofing.
Sealing waterproofing tape is used to increase the reliability of the waterproofing coating at stress points: plane joints, expansion joints
The use of waterproofing materials provides guaranteed protection against troubles that can be caused by water leakage from utilities. This is especially true in rooms with a special risk: kitchen, toilet, bathroom. The waterproofing device must be carried out in compliance with all the rules, since their violation can nullify all efforts.
