We're planning on laying some 10mm thick oak parquet by gluing (Styccobond) directly to the concrete subfloor across 3 adjacent rooms, with each room about 10 sq m in area.
In the 1st room the existing floor level is spot on. In the 2nd L-shaped room (hallway) it's mainly level except for about 3 sq m at one end where it slopes away by about 9-10mm over a 1.5m distance. In the 3rd room it's level throughout except for a 15cm wide strip which snakes round the side of the room for about 5 metres in total, dipping by up to 8mm - this is where a builder previously re-routed the pipework when a radiator was moved to the opposite side of the room.
Firstly, how tolerant is parquet to slight height variations? Is there a rule of thumb for the change in height per unit distance which is acceptable?
Secondly, is it possible to use self-levelling compound on just the sloping area (2nd room) and 15cm x 5m strip (3rd room) and blend or feather the edges into the existing concrete floor? Or do we need to apply self-levelling compound to a whole room at a time?
As the plan is to have wood floor across all 3 rooms, if we have to self-level a whole room at a time does this have to be done across all 3 rooms just so that heights/levels between each room remain the same? I'd really like to avoid this is at all possible as the cost of 30sqm of self-levelling compound works out more expensive than the parquet which we picked up from eBay)!
Many thanks in advance.
In the 1st room the existing floor level is spot on. In the 2nd L-shaped room (hallway) it's mainly level except for about 3 sq m at one end where it slopes away by about 9-10mm over a 1.5m distance. In the 3rd room it's level throughout except for a 15cm wide strip which snakes round the side of the room for about 5 metres in total, dipping by up to 8mm - this is where a builder previously re-routed the pipework when a radiator was moved to the opposite side of the room.
Firstly, how tolerant is parquet to slight height variations? Is there a rule of thumb for the change in height per unit distance which is acceptable?
Secondly, is it possible to use self-levelling compound on just the sloping area (2nd room) and 15cm x 5m strip (3rd room) and blend or feather the edges into the existing concrete floor? Or do we need to apply self-levelling compound to a whole room at a time?
As the plan is to have wood floor across all 3 rooms, if we have to self-level a whole room at a time does this have to be done across all 3 rooms just so that heights/levels between each room remain the same? I'd really like to avoid this is at all possible as the cost of 30sqm of self-levelling compound works out more expensive than the parquet which we picked up from eBay)!
Many thanks in advance.
