- 1 Roofing mastic: types and uses
- 2 roofing mastic
- 2.1 What is a roofing mastic, rules applying roofing mastic
- 3 Features and rules applying roofing mastic
Roofing mastic: types and uses
When the structure of the building, regardless of the type of roofing and roof constructions, some types of work are standard. This performance of roof system installation crates, stacking "piroga9raquo ;, which includes several layers, such as insulation, waterproofing and more. It may be noted that for the quality of work you need to choose the right materials. Thus, for the insulation commonly used roofing mastic, which has been available various kinds. Consider the application and varieties of this material.
Types of waterproofing material
Roof Mastic is a binder of organic compound with the filler, as which may be used materials such as asbestos, rock wool, slag, silica, talc and others. These additives improve the technical characteristics of the material (increase strength, resistance to thermal stress, reduced brittleness at cold et al.). In addition, the mastic added preservatives and herbicides, to prevent the occurrence of fungal formations, lichen and other implementations.
Depending on the type of organic matter mastics following types:
- combined (bituminous, bituminous-polymer and others);
Also, this material can be roughly divided depending on the method of use for such types:
- Roof Mastic hot - this type of binder materials are used in a heated state to perform fastening roofing material, Tolev material and other coatings. Besides their use as a protective layer for roofing structures. As a rule, this type of roof waterproofing is designated IBC-D - **, where in place * cost figures for the heat resistance. Depending on the region's terrain and slope of the roof mastic applied with a certain heat resistance. For example, for the northern latitude for the structure with a ramp of less than 2.5% recommends use MBK-T-55.
- Mastic cold - this raw material used for sealing processing at places abutting sheets coating, when laying the web material for roofs and repair work. When using this type of mastic diluted with solvents (uyat spirit), petrol, solvents and others.
Application of a waterproofing material for roofs
Conditions and methods of use of this material may be different, but it is possible to identify some points common to all types of mastic:
- Cool roofing mastic may be applied with a spatula, and when using a brush or by applying the dispensing method it is necessary to dilute, the allowable level - no more than 30% solvent.
- The liquid mastic should be applied to flat, clean surface to which the precoat necessary to first apply a layer of bitumen primer.
- When the work necessary to be careful, because the substances that contain roofing mastic, toxic. Therefore, to protect itself from poisoning, it is recommended to wear safety glasses, dust mask (for application of hot mastic), gloves and clothes.
- Bituminous roofing preparing hot, usually on special equipment in the factory. Self preparation is also possible, but it is necessary to prepare a container, which is set around the brick lining. Also, the tank lid must be tightly closed. The heating temperature - about 180 ° C, the solution must be constantly stirring, unwanted impurities must be removed (for these purposes may be used a metal sieve or other similar device). Hot mastic should be prepared for 2-3 hours before the execution.
Roof Mastic provides durable sealed connection of coatings and waterproofing layer is obtained smooth, strong and durable enough. The use of this material helps prevent the appearance of fungal structures and corrosion damage, which increases the quality of work performed.
What is a roofing mastic, rules applying roofing mastic
A wide range of materials for roofing, represented in the construction market, requires a clear understanding of advantages and disadvantages of each. This article is a detailed guidance, which is considered as the main application of the mastic sealing tool, as well as principles of mastics classification.
Hydro-technology solution which is directed to the use of bitumen derivatives existed in the ancient world. Egypt and many attractions structures found in the area between the Euphrates and Tiger, were constructed using materials, structural composition which included bitumen. And storage reservoir for the grain, palaces and temples, walls and floor slabs which are held together by means of bituminous resins, tunnel, construction of which is connected to the first millennium BC - all constructed using bitumen.
Since then, the whole construction industry has developed, through various stages of its existence. In addition, the developed and the use of mastic as the leading waterproofing tools.
1960s marked modification mastic substances with the polymer structure, which improves its mechanical and physical characteristics and putative increased service life. Nowadays mastic is recognized as the ancestor of absolutely all roll materials for roofs, technological principle which consists in applying mastic prepared on the basis of known in assembly line conditions.
Roofing mastic and its scope
What is a roofing mastic? Scope indicates that this material, which is famous for its versatility, it is highly in demand, both in the roofing business, and in other branches of construction.
Apparatus roof membrane, one of which contains the waterproofing stages - the main direction of application of the mastic, i.e. all the situations involving the need to protect surfaces or spaces to water without cost without mastic.
Analysis roofing mastic composition indicates that its structure predominates bitumen. But in cases involving the roof, to the mastic imposed the most stringent requirements, which necessitates the use of more sophisticated technological mechanisms of its production. They are in addition polymerizing substances. They help to achieve a certain level of elasticity and frost resistance of roofing mastic, designed for waterproofing.
Classification according to the method use mastic
Choosing paste, you should be aware that differences in the method of using the said building material to cause division mastics hot and cold.
This division indicates that the application of hot mastic impossible without preheating, while the cold mastic do not feel the need for this procedure. But they have their own specificity: depending on the prevailing structural component cold mastic established classification, providing their division into emulsion and solvent-based mastic. Each of them characterized and the benefits and negative aspects.
Roofing mastic hot, main characteristics
Roof Mastic hot - material required for the roof membrane device, which time checking and destructive action of excess moisture. Using it, remember that the basic rule - preheating to 160-180 degrees.
After completing it, you can proceed to the next step involves applying a known mastic primed surface. Waiting for lowering the temperature, you are sure that the cooling structure contributes change of mastic, and it takes the form of a refractory coating desired elasticity and strength.
The main characteristics of the bituminous roofing mastic hot, it is necessary to mention lack of tendency to shrinkage during solidification, non-porous structure, effective use at temperatures below zero, and a lower price. All of the above characteristics can be considered a plus of this type of mastic. But we can not forget about the disadvantages. These include a high risk of fires and burns, energy consumption during processing and discomfort during application of mastic.
The desire of manufacturers to simplify the technological features of production contributed to the entry into the consumer mastic cold type. Particularly its composition allows to allocate mastic background component of which is water-based mastic, manufacturing technology involves the use of solvents. Their use is based on the crystal lattice and change monolith formation damp-proof layer, which occurs after the evaporation of water or solvent. Experts advise to give preference to water-based mastic, so-called bituminous emulsions, due to their low toxicity and explosion.
The role of the correct application of mastic roofing durability
Durability roof constructive solution which provides protection from moisture by applying a bituminous roofing mastic stored in the correlation function of the correctness of its application on the base.
The high level of performance properties as is possible without compliance rules technological preparation mortar. In this matter experts on the side of single-component mixtures, as they represent a substance, a ready-to-use and do not require specific manipulation of Preparation.
Uniform distribution of the mastic can be performed on the basis of several methods. The most technologically advanced of these is the automated method, the concept of which is the use of an air spray gun. It allows to maintain the proper level of uniformity of application of damp-proof material, even when non-default configuration and excessive roof pitch.
Adherents conservative methods approve distribution based mastic by roller or brush, so-called manual method. The main disadvantage of this method is the difficulty of obtaining the desired coating thickness, especially when significant roughness.
Repair of the roof using mastic does not require removal of obsolete coating, except in cases involving excessive use of roofing material.
roofing mastic "TehnoNIKOL9quot;
The competence of the corporation "TehnoNIKOL9raquo; includes the development of mastic compositions, the structure of which asphalts predominate, and implementation of these ideas. Products combining them will be faithful assistant in the development of roofing waterproofing projects of industrial and civil objects, as well as in the repair of the roof membrane.
Structure roof mastics "TehnoNikol9raquo; It represented a mixture whose components is a modifying bitumen with polymerizable substances, mineral aggregates and an organic solvent. The service life of structures, in a project which provides for protection of waterproofing mastic "TehnoNIKOL9raquo ;, will give you positive changes in this area, thanks to the expansion of operating temperature range.
Mastics, production of which is associated with the name of the corporation, will become the basis for quality waterproofing structures and actively in contact with moisture, and will come in handy when designing bitumen roofing.
Features and rules applying roofing mastic
Roofing is an important step in building a house. With the advent of the construction market a variety of roofing materials, this process becomes more progressive and interesting. One such material is a roofing mastic. It is used in the repair of roofs and apparatus not only as a reliable waterproofing material, but also as an independent roofing. It can successfully replace rolled materials for the roof, an affordable price, acceptable performance, ease of application. To select the optimum coating for a specific structure should be familiar with species roofing mastics, their properties, and applying the rules al.
Roofing mastic - its composition and performance of the ↑
For roof mastic is an artificial material, which consists of a mixture of binders with mineral additives and various fillers (rock wool, asbestos, cement, fly ash, quartz, lime). Fillers provide surface hardness during solidification, its stability during temperature fluctuations. Often in the mastic includes herbicides and antiseptics. The homogeneous viscous mass is poured easily on the roof surface, forming after curing a monolithic membrane, which protects the roof from the elements.
According to its properties mastic and roll roofing is largely the same, but the first priority is its seamlessness. Depending on the composition roofing mastic are single-component and two-component.
One-component mastic made on the basis of solvents and are ready to use product. As they solidify solvent evaporation, however, to avoid premature curing, they come to market in sealed containers. Stored mastic such a short time - about 3 months. An exception is the polyurethane sealant (containing no solvent) - it is stored 12 months or more.
Two-component mastics consist of 2 chemical compounds with low activity, which are stored over a year apart, so they can be purchased in advance.
Mastic coatings have the following favorable properties:
- a light weight;
- high strength;
- weather resistance;
- UV resistance;
- Not being corrosion.
To mastic distributed uniformly, the roof surface is flat, so it is mainly used on flat roofs.
It is important to know! If the angle of inclination of the roof is more than 12 degrees, and the ambient temperature exceeds 25 ° C, then it is necessary to increase the viscosity of the mastic, adding a thickening.
To change the color or viscosity of the mastic, it is possible to add special fillers. They are also added to improve the hardness and heat resistance, reduction of share rate of binders, reducing brittleness of the material at very low temperatures, increasing the bending resistance.
The main advantage of the roof covered with mastic considered its lack of seams and joints. Another plus roofing mastic - its elasticity, which allows to preserve the tightness with roofing roof deformation. But in order to create a uniform cover of mastic is necessary to ensure a perfectly flat surface of the base or increase the flow rate of the material. But the first and second leads to an increase in the cost of coverage. Sometimes it is impossible to achieve a uniform thickness of the layer of mastic, and this fact is considered a drawback. But in such cases there is a special technique it is applied in two layers. The first layer is applied to one color, and the second - another contrasting color. The second coating layer should have a thickness such that the first layer is not visible therethrough.
Varieties of roofing mastics ↑
Mastic for roofing are classified as follows:
- on purpose - anti-corrosion, roofing and insulation, gluing, waterproofing and asphalt;
- composition - one-component and two-component;
- the type of binder - bitumen-polymer, polymer, bitumen-latex, butyl rubber, hlorsulfopolietilenovye;
- according to the method of use - cold and hot;
- by the method of cure - curing and non-curing.
- by solvent mind - with a content of water, based on organic solvents or liquid organic substances;
Currently, the most common are hot roofing mastic asphalt and bitumen-latex roofing mastic.
Bituminous roofing hot It represents a cementitious composition from bitumen roofing, modified polymers and mineral filler. Before applying hot bitumen mastic further heated to 150 ° C. It perfectly combined with other building materials, creating durable roofing system with endurance to different influences and is used for waterproofing, repair of roofs, roof membrane junction device for tubes, funnels, ventilation wells. There are a number of requirements to be met by hot asphalt mastic - the guests and other applicable standards define a list of them as follows:
- mastic structure must be homogeneous (without other fractions);
- heat resistance - not less than + 70 ° C;
- mastic should be environmentally safe (no toxic substances);
- in a heated state must be fluid to freely spreading a thin layer on the surface of the roof;
- have good adhesion with the horizontal and inclined surfaces;
- It should not crack during solidification.
Bituminous roof-latex It is a mixture of original and synthetic binders, various additives and inorganic fillers. Communications component in it are latex and bitumen and fillers - asbestos, mineral wool, various powders. This type of mastic is used in the repair of roofs for bonding various materials for roll roofing, as well as a separate durable waterproof coating.
Note. There are many types of roofing mastics, but in order to choose the right, you need to take into account the structural features of the roof and the conditions of its operation.
The basic rules applying mastic ↑
Bituminous roofing mastic applied without removal of the old coating, except in cases where on the roof there are a large number of web materials that were floored in numerous repairs. They do not make it possible to apply the paste evenly and thinly.
Roof surface must be pre-cleaned of debris, dirt and dust. Cold-applied mastic or preliminary heating using a roller, brush or spatula. The number of layers will depend on the slope of the ramp and the presence of irregularities. In most two-layer coating is applied.
Attention! If the angle of inclination of the roof is greater than 25 degrees, it is not recommended to use a roof mastic.
The layer thickness is usually equal to 1 millimeter and drying it for 24 hours. When applying several layers the drying time will be 1-7 days. If mastic applied to a flat surface, flow of material will be about 1,3 kg / m2.
In the cold season mastic recommended warm up to 50 degrees before application, to better adhere to the surface and to impart the optimal performance of the mastic coating roofing sprinkled powder.
The best way to increase the strength of the roof mastic - a reinforcement of fiberglass or glass fiber material web. Application of these reinforcing elements is justified because they themselves have high strength.
It is important to know. Further reinforcing the roof mastic its strength increases, but elasticity of the coating thus reduced.
Applied roofing mastic to repair the roofs of all types - metal, concrete, roll, asbestos cement, mastic.
Although the device mastic roofing and it seems simple, the job best left to people who have a wealth of experience behind him and knows all the intricacies of this case. After all, the slightest errors and inaccuracies in the regeneration of the roof mastic, can result in serious problems in the future.