In the hallway of the attic in our old building, I noticed that the floor is sagging and no longer level. I checked underneath. The floor structure consists of 20mm (about ¾ inch) polystyrene insulation (now more like 17mm (⅔ inch)) and 20mm (¾ inch) chipboard. Some of the chipboards were apparently installed without tongue and groove joints, so over the years they have pressed into the polystyrene. There is carpet laid directly on top.
The question now is how to level the floor again. I assume that the old structure needs to be removed since it is no longer usable. The new structure should be roughly the same thickness as the old one, around 40mm (1 ½ inches). I was thinking about using 20mm (¾ inch) polystyrene with 18mm (¾ inch) or 22mm (⅞ inch) OSB boards (of course with tongue and groove). Does this make sense? Would 18mm (¾ inch) OSB be enough, or would it definitely need to be 22mm (⅞ inch)? Or am I completely off track, and is there a better solution?
The question now is how to level the floor again. I assume that the old structure needs to be removed since it is no longer usable. The new structure should be roughly the same thickness as the old one, around 40mm (1 ½ inches). I was thinking about using 20mm (¾ inch) polystyrene with 18mm (¾ inch) or 22mm (⅞ inch) OSB boards (of course with tongue and groove). Does this make sense? Would 18mm (¾ inch) OSB be enough, or would it definitely need to be 22mm (⅞ inch)? Or am I completely off track, and is there a better solution?
Vicky Pedia21 Feb 2020 23:28KlaRa schrieb:
Buildings that are 25 years or older are considered "older buildings" for residential and commercial use.Dear KlaRa, now it’s my turn: unfortunately, no! The term "older building" is linked to both age and construction style—generally up to the early 1950s. After that come post-war buildings, then new buildings. This classification is based on architectural style. Sorry, back to technical topics now!H
hampshire22 Feb 2020 11:00The term "old building" is not precisely defined. It’s as simple as that. In Berlin, in everyday language on the rental market, "old building" refers to structures built before World War II, and "new building" to those constructed afterwards. In the Rhineland, "old building" is associated not only with an older house but also with high ceilings. Describing it as having been in use for 25 years is just as valid as referring to specific architectural styles—there is no "right" or "wrong."
The uzin website (Turbolight) seems to be down—@KlaRa: Would other lightweight screed options also work?
The uzin website (Turbolight) seems to be down—@KlaRa: Would other lightweight screed options also work?
hampshire schrieb:
The uzin page (Turbolight) seems to be down – @KlaRa: would other lightweight screed alternatives also work?Your observation is correct; however, I cannot explain the reason why.There are certainly similar alternative special constructions to "UZIN-Turbolight," such as "ASO-EZ light" from Schomburg. At the time, the lower surface weight was decisive in choosing the UZIN system because the ceiling structures, according to the structural engineer, were allowed to weigh a maximum of 85kg (188 lbs) at a height buildup of 13cm (5 inches). This was under a surface load of 5kN/m² and heavy public foot traffic.
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