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　With the development of modern science and technology, the growth of the demand of the energy with rapid consumption, people's understanding of energy crisis is stronger and stronger, economize the energy and undoubtedly put in front of people, and hard quality polyurethane foamed plastics have heatconduction to be coefficient little keepingof good

performance , adhesive force strong , bad can foam construction convenient advantage living water permeability warm, globality is good, quality is light, the fabrication cost does not undoubtedly become first-selection which economizes the energy high . (already apply to the building roofing extensively in Europe and U.S.A. PUA , PUF system). Our company has been devoted to in the past ten years There are advanced technology and scientific research strength in the developmental research of the polyurethane foamed plastics of hard quality, application at the roofing is it introduce to make in building about hard quality polyurethane foamed plastics our company now. On-the-spot spraying PUA is a kind of new-type environmental protection type waterproof material , the whole is waterproof, it has extending rate of high strength and tears the intensity, resists and wear out , corrosion-resistant, adhesive force strong , fast solidification , have seam excellent performance, most advanced waterproof material of warm - keeping in the world nowadays.

　On-the-spot spraying PUF is that a kind of high polymer formates materials , its warm - keeping with uniqueness , adiabatic performance , Rong ZhongXiao , heat conduction have low coefficient , sound insulation , able to bear chemistry corroding , fire-retardant characteristic blocking water, it is a kind of advanced heat insulator .

The roofing is the important component of the building, the quality of its quality influences industrial production and people's lives directly, so, what warm - keeping , heat insulation and waterproof result which improve the roofing on the basis of the thing that the rational technology of economy is feasible, it has that the scientific research and design has constructed workers personnel and devoted to the technological problem solved all the time to prevent roofing seepage. Hard quality polyurethane foam PUF of on-the-spot spraying and gathering the application skill in the project of the roofing of elastomer PUA system of urea (polyurethane ) The skill is to adopt the craft of spraying directly in the project of the roofing constructs, make the liquid polyurethane up the material and spray directly on the room board, the hard quality PUF and roofing basic unit that make spraying directly form and go all out to defeat the waterproof heat preservation of the seam , in order to improve the waterproof ability of keeping warm and lengthen service life after the spraying hard quality polyurethane foam reach certain thickness, one layer gathers urea elastomer to spray directly , make this system double and waterproof and keeping the function warm, in order to prevent the sunshine radiation and machinery from damaging and doing corresponding covering the surface antiabrasion layer finally.

　Hard quality PUF of on-the-spot spraying and gathering the urea (polyurethane) the hard quality PUF of on-the-spot spraying of construction course of the elastomer PUA system and PUA system construction method are different from traditional waterproof heat insulator construction method , adopt roofing of scene is it construct homework to go on usually ,s it can operate by 4-6 people to construct

usually, can spray more than 300-500 square meters every day (not including constructing in makeup-time). Spraying type PUF and PUA system roofing system, if can correct to design , correct correct to safeguard construction, service life is the same as building.
(1)The basic unit deals with: Remove the gravel and sand , incidental , dust and greasy dirt on the basic unit of clean roofing. (2)Aspect method: Use on-the-spot spraying hard quality PUA and roofing , PUF of system, because on-the-spot spraying PUA and PUF system have bigger steam permeate and hinder, heat conduction coefficient is low , double and waterproof , keep such characteristics as the function ,etc. warm, do not need to set up the waterproof layer of a roll of material in PUF ground floor . The following is on-the-spot spraying PUA and two kinds of construction sketch maps of PUF system roofing:

The method in waterproof keeping warm respect have double to guarantee service life of it higher than the waterproof material and heat insulator, it is revolutionary leap in the history of the building .

This kind of method can be made into, wanton the colored roofing of the color.