ᐅ Is it possible to lower the floor construction?

Created on: 22 Dec 2024 11:31
M
Marci82
Hello, is it possible to lower the floor construction to gain more ceiling height?
My building planner originally designed with standard height hollow brick blocks, and that is still my biggest issue and very frustrating.

My current construction has a total height of 18cm (7 inches): 10mm (0.4 inches) vapor barrier, 70mm (3 inches) thermal insulation with a thermal conductivity of 0.035 W/(m·K), 30mm (1.2 inches) insulation fixing board, 65mm (2.6 inches) cement screed with underfloor heating, and 5mm (0.2 inches) PVC flooring with leveling compound.

I would also like to replace the insulation with a better one, which has a thickness of 60mm (2.4 inches) (Puren PIR MV-SE).

Is this possible overall, how many centimeters of height can be gained, and what costs should be expected?
I assume the biggest challenge will be that doors and stairs may also need to be adjusted?
N
nordanney
23 Dec 2024 16:24
Marci82 schrieb:

How much can you grind the screed if I only want to replace the floor covering with a thicker one that provides better impact sound insulation?
You want to do this on the ground floor, right? You don’t really need to, since there’s no one in the basement you could bother. I don’t understand the idea.

By the way, the biggest effect comes from the insulation beneath the screed. This usually serves not only for thermal insulation but also for impact sound insulation.

The floor covering is also glued down, which is correct.

You won’t gain much from grinding it further.
K
kbt09
23 Dec 2024 16:44
One should also consider floor-to-ceiling windows and the main entrance door if planning to lower the floor level.
C
chand1986
23 Dec 2024 17:54
Why exactly are the 2.46 m (8 feet) now a problem that needs solving?
M
MachsSelbst
24 Dec 2024 08:55
Because 2.46m (8 feet) is anything but trendy, and many home builders promote 2.7–2.8m (9–9.2 feet) as a sign of freedom and luxury.
If there were 15 or 20cm (6 or 8 inches) more, it might be worth considering.
But considering a realistic 5cm (2 inches), it doesn’t make sense.

Then you just have to return the chandelier, as unfortunate as that is.