| Insulating capacity: Heat insulation requirements to DIN 4108 and in accordance with the Energy Conservation Act and Heat Conservation Regulations (West Germany). Pleasant room temperatures in both summer and winter. Protection of the structure from temperature-induced stresses, dimensional changes, condensation moisture and precipitation moisture | Extremely low thermal conductivity; the material should retain its insulating capacity for decades. Specified thermal conductivity value to DIN 4108, test to DIN 52612 (test standard for rigid foam insulating materials). The insulation must feature seamless flashing with no thermal bridges. | Thermal conductivity coefficients: Average measured value to DIN 52612: ʎ 10 dry = down to 0.019 W/(m.K), at + 10°C mean temperature: Thermal conductivity group: 030. Specified value for coefficient of thermal conductivity to DIN 18 159, Part 1, corresponding to DIN 4108, Part 4 (1985 edition), Table 1: Aspec.—0.030 W/(m.K). |
| Thermal behaviour: Protection from temperature fluctuations caused by climatic conditions — daily variations of up to 75°C and annual temperature differentials of up to 110°C. | Service temperature range from—40°C to + 100°C. Low expansion coefficient. | Standard gradesPermanent service from — 50°Ctemperature: to + 100°C Short-term temperature peaks (including contact with hot bitumen): up to + 250°C |
| Flammability classification: Building materials classification to DIN 4102 and fire prevention in accordance with guidelines for the use of combustible materials in structural engineering, | Fire performance to DIN 4102. | Rated in building materials class*) B 2 in accordance with DIN 4102, Part 1, both with and without UV protective coating; resistant to flying cinders and radiant heat in accordance with DIN 4102, Part 7. |
| Mechanical properties: The roof must be strong enough to be walked on. | The insulation must be strong enough to be walked on. | Withstands f’oot traffic; good dimensional accuracy and dimensional stability. Compressive stress to DIN 53421 at a density of 60 kg / m3 = 0.45 NI mm2. |
| Behaviour towards moisture: Reliable protection against rainwater, permeability to water vapour diffusion. | Closed-cell insulation which does not prevent water vapour diffusion | Rainwater-tight both with and without UV protective coating (based on DIN 4108). Diffusion resistance factor to DIN 52615 = 50 i at a density of 60 kg/rn3. |
| Behaviour towards chemicals: Resistance to aggressive chemicals during application and under service conditions. | Resistance to a broad range of chemicals commonly used in the building industry, Resistance to aggressiv media, resistance to weathering and LJV radiation, | Largely resistant to solvents, plasticizers, fuels, mineral oils, dilute acids and alkalis, exhaust fumes, aggressive industrial atmospheres and weathering UV-resi stance is ensured by the application. |
| Biological characteristics: Resistance to fungi, microbes and root penetration | Good biological resistance. Tests to DIN 53930—31 and DIN 4062 | Resistant to fungi and microbes, rot and decay resistant. Odourless and free of any health hazard’ also root resistant to DIN 4062. |
| Application: Economical application of a seamless insulating layer, with no thermal bridges or potential sources of defects, and having a watertight outer skin, even with awkward flashing. Suitability for various types of roof structure and renovation work on flat roofs. | The requirement is for an insulating and sealing material which can be produced in situ, and sprayed onto various roof structures leaving no seams. Adequate adhesion to a variety of substrates is essential. Flashing, cut-outs etc. must present no problems. | Mobile foaming units are used for the rapid spray application of several seamless insulating and sealing layers on practically all shapes of roof and types of substrate. Flashing, cut-outs etc. are produced during the foaming operation, thus ensuring that the heat insulating and sealing layer is seamless and free of thermal bridges. |
