ᐅ Drywall Construction – Ceiling Deviation in New Construction

Hello,

we moved into our newly built house a few months ago. Unfortunately, only recently did we notice some irregularities regarding the ceiling on the first floor. Maybe someone can help us determine if this is a serious issue?

- I have attached the ceiling plan. Unfortunately, it was designed so that insulation is placed under the vapor barrier as well (less than 25% of the total insulation).

What seems very strange to us now:

The ceiling height throughout the entire first floor is 7 cm (2.8 inches) higher than in the plan. The developer’s response was that the drywall installer lowered the ceiling by 7 cm (2.8 inches) instead of 14 cm (5.5 inches), which supposedly does not cause any problems.

Now I have reviewed the specifications again (see attachment).

• There must be a 20 mm (0.8 inch) air gap and a 20 mm (0.8 inch) timber layer above the gypsum board.
• Only above these layers does the first insulation layer (60 mm / 2.4 inches mineral wool) begin.

I don’t see any wood at all – is this correct?

Urgently contact your site manager or architect, request a written explanation for the deviation, and verify whether the construction has been carried out properly in accordance with the relevant building permits / planning permissions. If necessary, consult an independent expert.

Hey123456 schrieb:

I don’t see any wood at all – is that correct?

You don’t see wood, but you see aluminum or metal profiles instead.
The mentioned wood is only structural timber, which has been replaced by aluminum profiles in your case.
Basically, either option can be used. Metal replaces the former wood.

Hey123456 schrieb:

We only noticed irregularities with the ceiling on the 1st FLOOR later on.

What kind of irregularities?

Okay, maybe I just had a strange feeling—

• According to the plan, the construction was supposed to be done with structural timber, but it was replaced with metal — I was concerned also because of the building physics implications (although I have no expertise here — thermal bridges, moisture protection, I couldn’t find the air layer, etc.).

I see no issues with the UK, but there is a problem with the cable penetration through the vapor barrier. Tape is no longer considered state-of-the-art here; vapor barrier grommets should be used for cable pass-throughs.

However, with only one or two cables, this is a minor defect. If you can, have it corrected. The grommet costs less than 5€ (about $5).