I have bought an apartment (80m2) where the hallway and living room are 20-30mm lower in level than the other rooms. This area is 30m2, and I need to somehow even out this level with the other rooms. In the hallway, it starts 20mm lower and increases to 30mm by the end of the living room, so yes, it slopes (the hallway is 4.5m long, the living room 3.6m). The idea is then to lay parquet flooring without thresholds/transition strips so it looks like "one piece", if you can call it that.
I have received different advice on how to solve this problem. The first advice is simply to use self-leveling compound. Calculating over the area and levels, we're talking about approximately 1237.5kg of self-leveling compound. For instance, the calculation is at 1.65kg per m2 per mm, so it becomes about 1.65 x 30m2 x 25mm (20 to 30mm becomes roughly 25mm) = 1237.5kg or about 50 bags (25kg per bag, ByggMax) or 8,450kr (169kr per bag, ByggMax). This seems quite expensive to me, and a lot of work is needed to get it done.
The second advice is to glue two 12.5mm floor gypsum boards directly onto the concrete to raise the level. For instance, the calculation would be about 42 boards (with 12.5x600x2400 boards from ByggMax, so it becomes 1.44m2 per board or 21 boards per 30m2, x2 makes it 42 boards) or 3045kr. This is more appealing to me in terms of budget. The problem is just that the levels are different, so the final result would also be different. You could mix 6mm boards on the lower heights, but then I would still need a threshold/transition strip of some kind.
Could one first self-level "a little" to even out the levels, and then go with gypsum boards to raise everything as much as one feels, or can you go with gypsum boards first and then self-level OVER these? Priming would be needed in any case...
Can it be done in any other simpler/better/cheaper way?
Thank you in advance!!!
/S.
I have received different advice on how to solve this problem. The first advice is simply to use self-leveling compound. Calculating over the area and levels, we're talking about approximately 1237.5kg of self-leveling compound. For instance, the calculation is at 1.65kg per m2 per mm, so it becomes about 1.65 x 30m2 x 25mm (20 to 30mm becomes roughly 25mm) = 1237.5kg or about 50 bags (25kg per bag, ByggMax) or 8,450kr (169kr per bag, ByggMax). This seems quite expensive to me, and a lot of work is needed to get it done.
The second advice is to glue two 12.5mm floor gypsum boards directly onto the concrete to raise the level. For instance, the calculation would be about 42 boards (with 12.5x600x2400 boards from ByggMax, so it becomes 1.44m2 per board or 21 boards per 30m2, x2 makes it 42 boards) or 3045kr. This is more appealing to me in terms of budget. The problem is just that the levels are different, so the final result would also be different. You could mix 6mm boards on the lower heights, but then I would still need a threshold/transition strip of some kind.
Could one first self-level "a little" to even out the levels, and then go with gypsum boards to raise everything as much as one feels, or can you go with gypsum boards first and then self-level OVER these? Priming would be needed in any case...
Can it be done in any other simpler/better/cheaper way?
Thank you in advance!!!
/S.
It's not always the case that the cheapest solution is the best. I would skip the plaster every time and just float. If you still need to have plaster, put it underneath and float on top for the exact height.