Isoperl®-Dustex® is a grained, heat and sound insulating levelling bulk on a perlite-basis under screeds. Dust-borne with a special emulsion.
General inspection approval no. Z-23.11.-1243 from the German Institute for Building Technology in Berlin and quality monitored by the Fraunhofer Institute for Building Physics in Stuttgart.
Isoperl®-Dustex® is poured directly onto the cleaned bare ceiling and is pulled level and horizontal with a straight edge or using gauges. When introducing more than 40 mm in thickness, a sealing of 20 % must be considered. Isoperl®-Dustex® fillings introduced in this way must also be mechanically sealed. This takes place by placing switch boards on the cover plates or on bitumen corrugated cardboard and sealing it with a hand beater or a light surface shaker.
Then the cement or mastic asphalt coat can be applied.
12 litres Isoperl®-Dustex® per m² of surface and per cm of thickness including 20 Vol.-% sealing.
Special processing information3
For wet coats, Isoperl®-Dustex® dry filler should be covered with bitumen corrugated cardboard, whereby attention should be paid that the individual tracks overlap by at least 8 cm.
For mastic asphalt screeds, cover plates such as fibre plates with a thickness of 8 - 10 mm are placed on the Isoperl®-Dustex® dry filler under consideration of a clean impact edge with joint displacement. The mastic asphalt is then introduced.
To make sure that the quality of the Isoperl®-Dustex® dry fillers are not adversely affected, switch boards should be used when sealing and the screed masses placed over laid planks.
Installation thickness of Isoperl®-Dustex® and recommended screed thicknesses.
|Isoperl®-Dustex®||Minimum thickness of mastic asphalt||Minimum thickness of cement coat|
|up to 30 mm
|above 40 mm incl. seal
||25 - 30 mm
||40 - 45 mm
Typical chemical analysis
||DIN 4102-A1, non-flammable
|Bulk weight approx
||0.01MN/m² (the planning thickness is the reduced installation thickness corresponding with the seal of 20 Vol.-%.)
100 litre plastic sacks