Hello everyone,
In our new build, we chose a lime plaster with reinforcement mesh based on the recommendation of our plasterer. The process was as follows:
- Base coat of lime plaster (approximately 15mm (0.6 inches) on average)
- Insulation, edge insulation strips, underfloor heating
- Screed
- Drywall construction (gypsum board ceiling on the upper floor)
- Lime plaster with reinforcement mesh (approximately 5-6 mm (0.2-0.24 inches) on average)
- Fine plaster (about 1 mm (0.04 inches)) – still pending
This sequence caused the following issues:
- Edge insulation strips were cut and plastered over
- Gypsum board ceiling was masked off, causing damage to the paper surface when the tape was removed
- Screed became soiled with plaster and partly damp (amount of water unknown)
How serious do you consider these issues? Does the screed need to be sanded again before installing the flooring, or is cleaning plus priming sufficient?
Thank you and best regards
In our new build, we chose a lime plaster with reinforcement mesh based on the recommendation of our plasterer. The process was as follows:
- Base coat of lime plaster (approximately 15mm (0.6 inches) on average)
- Insulation, edge insulation strips, underfloor heating
- Screed
- Drywall construction (gypsum board ceiling on the upper floor)
- Lime plaster with reinforcement mesh (approximately 5-6 mm (0.2-0.24 inches) on average)
- Fine plaster (about 1 mm (0.04 inches)) – still pending
This sequence caused the following issues:
- Edge insulation strips were cut and plastered over
- Gypsum board ceiling was masked off, causing damage to the paper surface when the tape was removed
- Screed became soiled with plaster and partly damp (amount of water unknown)
How serious do you consider these issues? Does the screed need to be sanded again before installing the flooring, or is cleaning plus priming sufficient?
Thank you and best regards
Hello,
the perimeter insulation strips should have remained fully visible; covering them with plaster can cause thermal bridges. You need to fill and sand the damaged drywall ceiling before applying the final plaster coat—this is poor workmanship but not a major issue. Regarding the screed: if there is no swelling, hollow spots, or efflorescence visible, thorough cleaning and appropriate primer are sufficient. Usually, sanding is not necessary as long as nothing is loose or significantly uneven.
the perimeter insulation strips should have remained fully visible; covering them with plaster can cause thermal bridges. You need to fill and sand the damaged drywall ceiling before applying the final plaster coat—this is poor workmanship but not a major issue. Regarding the screed: if there is no swelling, hollow spots, or efflorescence visible, thorough cleaning and appropriate primer are sufficient. Usually, sanding is not necessary as long as nothing is loose or significantly uneven.
T
Teimo198826 Jul 2025 09:47If the plaster now connects to the screed, you have a sound bridge. This is a disaster. It should be separated at this point. I consider the other issues not to be serious.
T
Teimo198827 Jul 2025 19:33MST2025 schrieb:
Thanks for the feedback!
It mostly looks like in the attached photo. So even with the edge insulation strip cut off, there would still be a separation between the screed and the plaster, and no sound bridge should occur, right?Yes, that looks fine. The flooring installer would have cut the edge strip off anyway....Hello,
similar question:
Starting from the shell construction stage, in what order would you schedule
- interior plastering
- and the installation of metal stud / drywall partitions?
The issue is that if I screw the metal studs (CW profiles) directly onto the shell wall, I won’t be able to apply plaster behind them afterward... (on the other hand, I would then need to complete all electrical wiring first [the electrical distribution box will be installed inside the drywall partition] or plaster only directly behind the studs?)
Thanks and regards
similar question:
Starting from the shell construction stage, in what order would you schedule
- interior plastering
- and the installation of metal stud / drywall partitions?
The issue is that if I screw the metal studs (CW profiles) directly onto the shell wall, I won’t be able to apply plaster behind them afterward... (on the other hand, I would then need to complete all electrical wiring first [the electrical distribution box will be installed inside the drywall partition] or plaster only directly behind the studs?)
Thanks and regards
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