The floors in a building are normally insulated for two reasons – heat retention and soundproofing.
Noise in buildings can be divided into impact sound and footfall sound. Footfall sound is sound that can be carried by air caused by stepping onto and walking on the floor. Footfall sound is not usually perceptible outside the room where the sound has originated.
Impact sound, on the other hand, is the transmission of the same sound into the structural components, so for example walking on bonded parquet is transmitted by the screed throughout the entire building unless the screed is not a sound bridge to the other rooms but provides effective insulation against the transmission of impact sound.
Insulation using for example STYROPOR® boards meets both requirements for heat and impact sound insulation, but on its own it is too soft and therefore not able to absorb point loads from furniture. Which is why a rigid layer that “shares the load” and also helps to absorb impact sound is laid on top of this insulation – screed.
Edge insulation strips
Even the smallest join between screed and solid building elements such as walls and floors is sometimes enough to allow impact sound to be transmitted from the room itself throughout the entire building, so a screed must also be decoupled from impact sound at the walls.
The GERA edge insulation strips that we manufacture in a variety of designs have been developed to do just that. We have a standard range but also produce bespoke solutions to meet the individual specifications of our customers or their customers, architects and builders:
Do you want to incorporate insulation in your flooring system but the available floor construction height does not allow fitting STYROPOR® insulation boards? Then our GERA PE foam impact sound insulation sheeting is the one for you:
Expansion joints divide larger areas of screed into smaller sections and form buffer zones between them so that any expansion of the screed, particularly during the drying process, cannot cause any damage.
|GERA EDS “Flexibel” Expansion Joint Profile|
produced from PE foam, self-adhesive, blue
GERA EDS “Stabil” Expansion Joint Profile
produced from polycarbonate/PE foam, self-adhesive, black-red
The function of GERA shuttering angles is to separate sections of screed at the end of the day or form room dividers. Made from sections of drinks cartons, they are environmentally-friendly and are ideal as protective angles in the packaging industry.
|GERA EDS Shuttering angles|