Hello!
I'm in the middle of an apartment renovation in a building from the 60s and currently working on the floors where I'm going to lay solid oak blocks in a herringbone pattern.
I've torn out vinyl flooring in all the rooms, and underneath the vinyl is a concrete floor. It's concrete flooring in all the rooms except the living room, where there is an old solid wood floor at the same height as the concrete floor. My plan was to lay a 12mm construction plywood floating over the entire floor after moisture barrier and felt paper and then nail the parquet blocks to the plywood.
The problem now is that all the plywood I laid floating on the floor has risen and is bowing in the middle?! Note that the apartment is on the 6th floor.
Can I fasten the boards to the concrete floor with nail plugs (e.g., 5x40 nail plugs) so they stay in place and do not rise? How does it work with movements if there are different subfloors (wood and concrete) under the plywood if it's screwed into the concrete and the old wood floor? How deep is it safe to drill into a concrete floor in a building from the 60s, could there be water pipes 50 mm down?
Thank you very much in advance if anyone can help me with how to solve this
Alex
I'm in the middle of an apartment renovation in a building from the 60s and currently working on the floors where I'm going to lay solid oak blocks in a herringbone pattern.
I've torn out vinyl flooring in all the rooms, and underneath the vinyl is a concrete floor. It's concrete flooring in all the rooms except the living room, where there is an old solid wood floor at the same height as the concrete floor. My plan was to lay a 12mm construction plywood floating over the entire floor after moisture barrier and felt paper and then nail the parquet blocks to the plywood.
The problem now is that all the plywood I laid floating on the floor has risen and is bowing in the middle?! Note that the apartment is on the 6th floor.
Can I fasten the boards to the concrete floor with nail plugs (e.g., 5x40 nail plugs) so they stay in place and do not rise? How does it work with movements if there are different subfloors (wood and concrete) under the plywood if it's screwed into the concrete and the old wood floor? How deep is it safe to drill into a concrete floor in a building from the 60s, could there be water pipes 50 mm down?
Thank you very much in advance if anyone can help me with how to solve this
Alex
How did you solve this?A Allekalle said:Hi!
I am in the middle of an apartment renovation in a building constructed in the 60s and am now working on the floors where I will lay solid oak pieces in a herringbone pattern.
I have removed vinyl flooring in all rooms and underneath is concrete flooring. It is concrete flooring in all rooms except the living room where there is an old solid wood floor at the same level as the concrete floor. My plan was to lay a 12mm construction plywood as a floating layer over the entire floor after moisture barrier and fiberboard, and then nail the parquet to the plywood.
The problem now is that all the plywood I have laid as floating on the floor has lifted and bows in the middle?! Note that the apartment is on the 6th floor.
Can I secure the boards to the concrete floor with nail plugs (e.g. 5x40 nail plugs) so they stay in place and don't lift? How does it work with movements when there are different substrates, (wood floor and concrete) under the plywood if it is screwed into both the concrete and the old wood floor? How deep can I drill into a concrete floor in a house built in the 60s, could there be water pipes 50 mm down?
Thank you very much in advance if anyone can help me solve this
Alex