TWO-COMPONENT THERMO AND HYDRO INSULATION FOAM
A-HIDROPUR PU spot foam heat insulation system permits totally new constructions and applications with its airtight, vapor barrier and heat insulating properties in connection with a high pressure resistance and adherence in the building industry.
This construction with closed cell spot foam shows an actual U-value that is less than the half of the calculated heat conductivity.
You can insulate roof constructions from the outside, without bothering the inner life of the loft. This way, it is possible to foam with polyurethane steep roofs directly from underneath on the bottom side of the roof covering without a roof foil, shuttering and counter batten. The whole construction is integrated in the foam, and so it is almost free of heat bridges.
Such a roof shows an extreme weather resistance against wind, rain, snow and even hailstorm. A-HIDROPUR PU-spot foam is excellent for the heat insulation of passive houses. It is possible to produce passive house walls with less than 25 cm thickness-all free of heat bridges and airtight.
The builder obtains heat armor with A-HIDROPUR PU-spot foam, which is more effective than other available, prefabricated insulation material with the same heat conductivity. It is possible to conduct the heat insulation as a thermic skin in one piece around the house without interruptions and heat bridges and with smart architectural design- to isolate the building literally hermetically from the outside world.
Foam plastics obtain a cellular structure after foaming expansion of plastics: little ball-shaped cavities lie on each other or partly proceed to each other. The cavities are filled with air or other gas. In doing so, open cell, closed cell and blended cell foam plastics for insulation come into being. The cell cavities are connected in open cell foam plastics (e.g.: flushing sponge) They are capable to absorb a liquid by capillarity. If they are used in the building industry, then the best use is for sound damping or for internal insulation.
A-HIDROPUR-open cell polyurethane foam
A-HIDROPUR PU-foam is an open cellular, semirigid polyurethane insulation system on two component basis. It is produced by a regulated mechanical manufacture. After blending and spraying, the liquid mixture immediately expands 120-fold of its fluid own volume. At the same time, the water serves as the solely propellant in the mixture! This unusual high expansion capability produces an unparalleled low density of the foam: 8 kg/m3.
This material can be considered almost weight neutral e.g: in the renovation and modernization of an old roof framework. With an insulation strength of 20 cm the strain only amounts 1,6 kg / m2 and thus the material can be put on permanently without complicated substructure or retention points. The expanding foam permanently adheres to all backgrounds and constructions and forms an airtight layer.
Because of its open cell structure, A-HIDROPUR is only suitable for application purposes in inner areas and it must not be exposed to pressure strain. It is very well suitable for heat insulation of easy construction residential buildings (with wood-, or steel construction), for loft installation and for assembled partition walls, for example from gypsum cardboard.
A-HIDROPUR-closed cell polyurethane foam
In closed cell foam plastics (e.g.: pipes or gaskets), the cells are separated from each other. The closed cells prevent air exchange and don’t exert capillarity on liquids. The closed cell spot foam is one of the best airtight materials all over the world. The air passage is 0,000011 l/sm2. with a strength of 2,5 cm.
By comparison: a PE vapor barrier foil ranges in a scale of 0,0004 l/sm2, thus it is 360 times worse! A-HIDROPUR PU-foam is an actual heavy weight champion with its mass per unit area of approx. 35kg/m3. The 10%-pressure resistance of 195 kPa results in an extreme hard foam that acts improving in erecting the structure integrity and stiffness in contrast to other materials.
Not only is air seeping prevented with this foam, even wind gusts get ineffective that would shatter easy constructions otherwise. In the USA, trials were made with the result that constructions with our closed cell spot foam in connection with OSB underground, 25% and in connection with drywall, 200% more torsional stiffness could be produced than in conventional insulated objects.
