Excellent moisture absorption capacity
GrafoTherm is composed of millions of micropores in the sizes 0,1 - 100 microns. They form a multi-layer porous texture with excellent moisture absorption capacity. Evaporation occurs faster than with conventional coatings due to the microporous structure, which breaks the water surface tension and spreads the moisture over the coating.
Applications
Typical application areas for GrafoTherm are warehouses and parking garages, ventilation ducts, water production plants and other production facilities, sports arenas, interior surfaces of wind turbine towers, sea containers, train and goods wagons, cattle sheds, etc. The best results with GrafoTherm can be obtained by spraying, but it can also be applied by brush or roller.
GrafoTherm is a one-component water-borne anti-condensation coating for steel roofing sheets, steel structures and other metal surfaces, where condensation and dripping-water problems occur. Exactly like BioRid, GrafoTherm is also built up on millions of micropores in the sizes 0,1 - 100 microns. They form a multi-layer porous texture with excellent moisture absorption capacity.
Evaporation occurs faster than with ordinary coatings due to the microporous structure, which breaks water surface tension and spreads moisture all around.
Other properties
Heat insulation (λ = 0,085 W / mK) and noise damping are other important functions of GrafoTherm. By forming a relatively thick layer, the coating slows down rapid changes in the surface temperature. Thus, the surface temperature, of e.g., profiled steel on the roof does not drop so quickly below the dew point in the night time. During hot summer days, it also insulates surfaces and keeps them cooler.
Application
Typical application areas for GrafoTherm are warehouses and parking houses, ventilation ducts and water production plants, other production facilities and sports arenas, interior surfaces of wind turbine towers, sea containers, train and goods wagons, animal sheds, etc.
The best results with GrafoTherm can be obtained by spraying, but it can also be applied by brush or roller.
There is a special version for production lines spray application – GrafoTherm Line.
| Product Name | Specific
gravity |
Theoretical
coverage |
Water absorption | Application methods | Colors |
| GrafoTherm | 1,1 kg / l | 1,1 - 1,8 m2 / l | approx. 350 g / m2 of water, 900g / m2 wet (NF P 15-203-1) | Airless spray, brush and roller | White and gray |
| GrafoTherm
GrafoTherm |
1,05 kg / l | 0,9 - 1,8 m2 / l | approx. 370 g / m2 of water, 600 g / m2 wet (NF P 15-203-1)
approx. 650 g / m2 of water, 1200 g / m2 wet (NF P 15-203-1) |
Conventional spraying or plaster spray gun | White and gray |
Find out how GrafoTherm works
Application
Example of the working principle of GrafoTherm
The pictures demonstratew the condensation cycle occuring in an uninsulated building with a roof made of partly GrafoTherm-treated and partly untreated steel sheets.
The example shows a normal early -spring or late-autumn day.
Phase 1 – Evening
The sun sets and the outdoor temperature outside falls rapidly.
The temperature of the roof will soon reach the dew point, and condensation starts to appear on the untreated part of the roof.
The GrafoTherm coating insulates and reduces the temperature difference between the steel sheets and the air. No condensation therefore appears on that part of the roof.
Phase 2 – Night
During cold nights with a clear sky, the temperature of a steel roof can be considerably lower than that of the outdoor air. This is due to long-wave heat radiation from the roof to the sky.
Heavy condensation now appears on the untreated surface and water starts dripping. Condensation also occurs on the steel surface under the GrafoTherm coat. However, condensation cannot take place on the surface of the GrafoTherm coating.
The micropores of the GrafoTherm coating adsorb the moisture and distribute it over the whole surface, where it is temporarily stored and even evaporates, if conditions change.
Phase 3 – Morning
The sun rises and the outdoor air warmed up. The temperature of the Ssteel roof will soon exceed the dew point. The untreated steel surface gradually stops dripping water and becomes dry.
The GrafoTherm coating will become dry very rapidly and will very soon have regained its capacity to meet the next condensation period.
Due to the size of the micropores, the surface tension of water is broken and the moisture evaporates two to three times faster than it would on the untreated steel surface.
