ᐅ Drywall construction, partially lowering the ceiling for indirect lighting
Created on: 6 May 2019 08:12
D
denz.Good morning,
I want to install indirect lighting in the living room (illuminating the room). For this, the ceiling along the edges will be dropped by 15cm (6 inches).
The wall is mainly made of calcium silicate bricks, with one wall constructed from aerated concrete. The ceiling consists of concrete (prefabricated concrete elements).
As shown in the attached image, I have a soffit/dropped section that extends 15cm (6 inches) down from the ceiling and an L-shaped section that is 25cm (10 inches) long. The distance from the wall to the soffit is 16cm (6.3 inches).
What is the best way to install this?
The UD profiles are marked in red and the CD profiles in green.
I would nail a UD profile to the ceiling (using a gas nailer I would need to borrow). Then attach the soffit (12.5mm (0.5 inch) drywall) to it with self-drilling screws. Will this work, or will the profile bend? Should I insert a timber batten (lath) inside the profile for reinforcement?
At the bottom edge of the soffit, I would also securely screw a UD profile. (The green CD profile is open on the side and therefore wouldn't be screwed in here.)
Then insert the CD profile (green). Before that, I would fasten/nail the UD profile to the wall. Screw the CD profile firmly in place: one screw on the right side through both the UD and CD profiles, and on the left side only through the CD profile. This means the CD profile is loosely supported inside the left UD profile, allowing for structural movements.
Does this approach make sense so far?
Would you do it this way or differently?
Is this "loose" support at the left wall connection profile necessary, or can I simply screw through both profiles to secure the drywall panel?
I want to install indirect lighting in the living room (illuminating the room). For this, the ceiling along the edges will be dropped by 15cm (6 inches).
The wall is mainly made of calcium silicate bricks, with one wall constructed from aerated concrete. The ceiling consists of concrete (prefabricated concrete elements).
As shown in the attached image, I have a soffit/dropped section that extends 15cm (6 inches) down from the ceiling and an L-shaped section that is 25cm (10 inches) long. The distance from the wall to the soffit is 16cm (6.3 inches).
What is the best way to install this?
The UD profiles are marked in red and the CD profiles in green.
I would nail a UD profile to the ceiling (using a gas nailer I would need to borrow). Then attach the soffit (12.5mm (0.5 inch) drywall) to it with self-drilling screws. Will this work, or will the profile bend? Should I insert a timber batten (lath) inside the profile for reinforcement?
At the bottom edge of the soffit, I would also securely screw a UD profile. (The green CD profile is open on the side and therefore wouldn't be screwed in here.)
Then insert the CD profile (green). Before that, I would fasten/nail the UD profile to the wall. Screw the CD profile firmly in place: one screw on the right side through both the UD and CD profiles, and on the left side only through the CD profile. This means the CD profile is loosely supported inside the left UD profile, allowing for structural movements.
Does this approach make sense so far?
Would you do it this way or differently?
Is this "loose" support at the left wall connection profile necessary, or can I simply screw through both profiles to secure the drywall panel?