Secrets of reliable screed floor waterproofing
A drop sharpens a stone – have you heard the saying? Popular wisdom applies to the issue of the appropriateness of such a thing as floor waterproofing under the screed. Protecting structures from the damaging effects of moisture is relevant and significant for both happy owners of their own homes and for residents of high-rise buildings: after all, the service life of floor coverings, good neighborly relations, and what’s there – the health of loved ones is at stake! Let us consider in detail how the floor can be waterproofed before the screed.
Content
- The use of waterproofing waterproofing
- Capillary waterproofing technology
- Film coating
- Waterproofing with floor mastic before screed
Proper arrangement of waterproofing will help to avoid the unpleasant prospect of flooding the neighbors from below. Imagine that by an unfortunate oversight, you allowed the flow of water in the bathroom over the edge. If moisture goes into the ceiling, it will soon appear on the ceiling of the neighbors (a similar nuisance can happen without your direct participation: breakage of the eyeliner on the toilet tank, crane breakdown, sudden breakage of the washing machine hose can occur at any time when nobody is at home) . Only observing the screed waterproofing rules can protect the floor of the house from the damaging effects of moisture: mold spreads well in a humid warm environment, which is unpleasant and unsafe for the health of households, in addition, a wet screed, transmitting moisture to the floor, can destroy it from the inside.
Among the possible options for arranging waterproofing under the screed, waterproofing with the use of natural and synthetic bitumen, various derivatives based on bitumen, as well as various materials based on polymer resins and chemically active components, are especially distinguished..
The main types of waterproofing materials
- Smear.
- Powder.
- Roll.
- Film.
- Mastics.
The use of waterproofing waterproofing
It is a multilayer coating of glass-roofing material, roofing material, glass fiber, hydrobutyl, hydroisol, etc. The waterproofing process of this type is very time-consuming: careful surface treatment, leveling (unevenness should not exceed 2 mm), a primer with an emulsion of bitumen and directly pasting is necessary. Technology compliance monitoring is important to avoid mechanical damage to the coating.
The waterproofing of the floor with ruberoid is strong and reliable, minus it in the release of an unpleasant toxic smell
Capillary waterproofing technology
The technology of capillary (or penetrating) isolation involves the use of a mixture of Portland cement, silicate or silica sand with various chemically active elements. The composition is applied to a damp surface, the active components react with concrete cement, forming a stable crystalline complex that densely fills any crack on the surface of the material. Strength index increases by 20%. An important feature is that in the event of cracking, spontaneous production of reagents occurs and the coating heals. Crystal neoplasms tend to retain moisture without obstructing air movement.
Film coating
Different thickness (from 0.2 to 2 mm) and content, the film materials are made from PVC, synthetic rubber, polypropylene, cellulose acetate, using various additives to extend the life of the materials, are durable, elastic and durable.
Additional reinforcement with fiberglass and synthetic fibers can achieve much greater waterproofing strength. A dense plastic film of the appropriate size is laid around the entire perimeter of the room.
The continuity of the waterproofing material is required, as is the entry of the coating onto the walls. In this case, a kind of “bowl” is formed, which prevents the penetration of moisture.
Waterproofing the floor before the screed with the help of PVC film is a budget option that is actively replaced by more efficient methods
Waterproofing with floor mastic before screed
Mastic is called an adhesive composition that not only interconnects various materials, but is also capable of covering the surfaces of structures to protect against damage.
First of all, they were most often used: the method of covering the slab with bituminous mastic in two layers, or waterproofing using roofing material, which is building paper impregnated with bitumen. Joints of roofing material were glued with the same molten bitumen. The waterproofing layer created in this way is able to isolate water. But the bitumen coating has serious drawbacks – cracks form over time, the coating loses its tightness and waterproofing becomes ineffective.
Plate processing with various coating compounds (mastic, multicomponent sealants, etc.) is simple in execution, but has poor resistance to mechanical damage and hydrostatic pressure.
Waterproofing by coating is easy to apply, does not require experience from the contractor, but is sensitive to mechanical damage.
Waterproofing the floor under the screed is necessary, it is a barrier to moisture, because the floor covering is laid on the screed, and the increased humidity of the screed will lead to its gradual destruction.
The simplest waterproofing method known since Soviet times – impregnation of a base with bitumen or materials containing bitumen does not justify itself in most cases due to its relatively low service life. When choosing the best arrangement method waterproofing under the foundation remember the effectiveness of only an integrated approach. Survey of the facility, preparation of a technical solution, selection of materials and performance of work should be carried out only by competent specialists.
