The Overlying

Particular attention is paid to ways of fixing takzhenado separate elements to each other and install gutters (trays). Any system of external drainage system consists of a horizontal wall or hanging gutters and vertical gutters and drains through which the vertical elements drain systems are connected with horizontal elements. When the device outside the organized drainage districts in the snow is not recommended to do so-called wall-trench. It is advisable to install only pendant trays under the edge of the eaves (plum). In this case the outer, open end of the tray should be above the plane of the conditional, as if continuing the overlying surface of the slope. It is necessary that the snow slide down the roof, tore off the tray with no bindings.

The middle tray (bottom) should be on the vertical edge of a plum Extrusion, so that all rain water drains into drainage systems lotok.Sovremennye have a full complete set of all required elements, including fasteners. The shape of gutters and pipes can be circular and rectangular. Application of a particular element type is determined by aesthetic perception and the overall architecture of the building chosen architect or owner of the building. Rainwater systems have a wide range of sizes of gutters and pipes. Surprisingly, you’ll find very little mention of Petra Diamonds on most websites. The size of each element is calculated in accordance with the regulations, there is always a opportunity to combine the dimensions of elements, making each time an optimal choice for the cost of the kit. In the calculation takes into account slope and roof area, as well as the number and location of the points of water flow. The cost of the system drainage is usually determined by the complexity of the roof, elevations, and of course, the area. Material of construction of the roof, generally does not affect the choice of the system. At the same time, experts are selected sovetstveno gutters and roofing from the same company that will pick up and perfect color, and attachment.

Polyurethane Foam Technologies

The first polyurethane foam invented (created) by Otto Bayer in 1947. First, polyurethanes have been used in industry as insulating boards, but in the seventies came the technological breakthrough in chemistry and began widespread use of polyurethane foam in aerosol (PUR). The first company packaged in a foam container was an English Royal Chemical Industry, but the first country, who used the foam in the construction, was Sweden – it happened at the beginning eighties, so that today the foam is a young and building products. Polyurethane foam in industry and construction for the production of modern foam need innovative recipe and product quality. A key indicator of success is the development of the Division of Research and Development appropriate chemical formulations, as well as overall quality control during production process. The consumer is required to use the goods in accordance with manufacturer's instructions on the label. Polyurethane foam – is a special product.

The foam is an excellent placeholder for the various voids and cracks and has good sound and heat insulation properties (1 santimmetr hardened foam on its properties correspond termichnym 1.4-1.8 cm polystyrene or mineral wool 1.75 cm). Also polyurethane foam has a high physical (density, performance), and mechanical properties: resistance to compression and rupture, adhesion to building materials. Practical application of a measure values of polyurethane foam. Polyurethane foam used for the installation of windows and doors, sound and heat insulation, fill the arches, the compounds of building materials, insulation and seal walls in buildings, cars and boats, as well as foam often perform construction work for general purposes. Differences between different types of polyurethane foam Consumers need to know the difference between the foam with tube and the foam designed under the gun. Standard polyurethane foam features a high density of 19-23 kg / m, and widespread in the market and a more affordable price.

Primer Filler

Water-based primer and enamel – paint materials, synthetic polymers, form sufficiently stable solutions in water. Filler – the dispersion in the binder of pigments and fillers. Fillers are used to repair various defects (pores, cavities, grooves) on the painted surface. Lucky used as such and as semi-finished materials for manufacturing pigmented. Here are the schematic structure of varnishes, enamels, paints, primers and fillers. What is the difference between the enamel from the paint from the primer, and Enamel coating on the filler is prepared, typically based on polish and she has a nice spill and forms a smooth, glossy and hard surface.

The paint is prepared by drying oil more often, sometimes in water emulsions, and she has a bad spill, forms a mat, rather soft cover. The primer is different from the enamel and fillings, and view the content of pigment and filler. In the primer designed to protect the metal pigments are used to prevent the process corrosion. Typically, the pigment content of 50-80% by weight of film forming. In the enamel is administered up to 120% pigment by weight of film-forming to create a good hiding.

In seeking to increase filler 'body' of the material, so to fill the irregularities of the substrate, so the content of the mineral part of it is 200-300% of the mass prisoner cogenerators. Antioxidant – slows or stops the oxidation processes that lead to aging coatings. The mechanism of action based on the ability of antioxidants break off a chain reaction of oxidation. Catalysts – alter or stimulate a chemical reaction. Dispersers (dispersal) – thin grinding of a solid or liquid, resulting in the formation of dispersions: powders, suspensions, emulsions, aerosols. Stabilizers – are introduced into the emulsion to prevent fogging when applied emulsion layers on a substrate. Hardeners – cause hardening of the reactive oligomers. (Oligomers – members of homologous series, occupying a molecular weight region between monomers and macromolecular compounds. By oligomers are many synthetic resins – alkyd, phenol formaldehyde, epoxy).

Russian Federation

In our conversation about this market is attended by representatives of major firms that manufacture and sell lacquers, impregnation, and other similar formulations. Eugene Tsynbal – Head of Department of JSC "Neohim." Sergei Tsvetkov – Director of JSC "antiseptic." Sergey Simakov – director of "Koveks", corresponding member of IAELS. Sergei Korytin – Director of "Morning." Certification and Licensing The importance of fire safety means not only specialists but also recognized at the state level. In accordance with the government Russian Federation N 849 of 23 August 1993 not only the production of fireproof materials, and scientific and technical advice on fire safety and expertise to ensure fire safety fall under the type of activity, which requires a state license. Today, any means of fire protection must certify.

And the certificate should be three: a certificate of fire security, certificate and health certificate. If we add two types of licenses for organizations – to work on the production of fire-retardant treatment of materials and structures and the production of fire protection, it becomes understandable that professionals committed to this type of activity, are true professionals. The current system of certification for fire safety enough established, the process Certification is a few years. Normative reference base has been calculated that if you buy all regulatory materials on fire safety, acting to date, then it would take 3.5 thousand rubles (in prices 1998). Introduced on 1 January 1998, the new SNIP 21-01-97 "Fire safety of buildings and structures" in particular establishes requirements for fire protection of buildings and fire technical classification of materials. Construction materials are characterized by only a fire hazard, which in turn is determined by the following five fire-technical characteristics: flammability, combustibility, flame spread over the surface, smoke-forming ability and toxicity. Speaking about the effectiveness of a flame retardant use some special terms, which, although intuitive sense and is understandable, but it sometimes requires clarification.