ᐅ What steps are necessary to achieve a Q3 finish from a Q2 interior plaster?
Created on: 18 Nov 2016 20:33
T
tecker2010
Hi,
The general contractor will hand over the house with Q2 interior plaster. We plan to mainly do the painting ourselves or hire painters for it. Having the whole house painted professionally is quite expensive, so we are considering doing some of the walls on our own. We will have all the ceilings done by professionals because we want to install painting fleece there. The main question is: What exactly is required to bring a Q2 wall to Q3 level so that dispersion paint can be applied directly?
From what I have researched so far, at the very least, all walls should be sanded with a float or sanding block. However, this probably is not enough, and all walls would need an additional layer of gypsum-based finish plaster, such as a bonding plaster like Knauf Rotband (which I have read about frequently). Is this correct, or what do the experts here recommend?
Best regards
The general contractor will hand over the house with Q2 interior plaster. We plan to mainly do the painting ourselves or hire painters for it. Having the whole house painted professionally is quite expensive, so we are considering doing some of the walls on our own. We will have all the ceilings done by professionals because we want to install painting fleece there. The main question is: What exactly is required to bring a Q2 wall to Q3 level so that dispersion paint can be applied directly?
From what I have researched so far, at the very least, all walls should be sanded with a float or sanding block. However, this probably is not enough, and all walls would need an additional layer of gypsum-based finish plaster, such as a bonding plaster like Knauf Rotband (which I have read about frequently). Is this correct, or what do the experts here recommend?
Best regards
T
Traumfaenger20 Nov 2016 21:54Are Q3 and fiber fleece alternatives? We were told that the thin fiber fleece would reflect the uneven texture on Q2, so for a smooth wall, Q3 should be applied first and then the fiber fleece added on top.
The additional cost for Q3 is moderate, about 16 EUR per square meter (10 sq ft) of living area for walls and ceilings at a clear height of 2.70 m (9 ft), although technically you should calculate the actual wall and ceiling surfaces, but I was too lazy to do that.
P.S.: Q4 is reportedly hardly offered anymore (is that true?).
The additional cost for Q3 is moderate, about 16 EUR per square meter (10 sq ft) of living area for walls and ceilings at a clear height of 2.70 m (9 ft), although technically you should calculate the actual wall and ceiling surfaces, but I was too lazy to do that.
P.S.: Q4 is reportedly hardly offered anymore (is that true?).
B
Bieber081521 Nov 2016 07:16The fleece does not make a wall smooth. On a normally plastered wall, you will still see the unevenness with fleece, especially in grazing light. If you want to apply smooth fleece, you should first achieve a Q3 level finish or have it done.
Masipulami21 Nov 2016 07:44Correct. We also have completely smooth fleece on the walls and ceilings.
It had to be prepared to Q3 standard beforehand.
It had to be prepared to Q3 standard beforehand.
F
fach1werk21 Nov 2016 18:46Q3 is fully skim-coated. If I were to do the joint compound myself, I wouldn’t use typical DIY sanding machines; I would try to remove excess material by chipping it off along the eaves. I would rather paint myself than do the joint compound, as that’s hard on the tendons and is done quickly by a professional. Q2 surfaces are difficult to paint and generally not recommended. It also partly depends on the body or thickness of the paint. For example, if it is filled, it can sometimes hide minor imperfections. I would only choose wall fleece if you want the wall to look completely untouched again at some point. The primer is usually an acrylic. The fleece is synthetic fiber. The emulsion further seals the surface, producing very dense walls.
Rotband (the ready-mixed joint compound) shrinks considerably; it might be worth checking if Pufas is available somewhere, as it behaves much better.
Regards
Gabriele
Rotband (the ready-mixed joint compound) shrinks considerably; it might be worth checking if Pufas is available somewhere, as it behaves much better.
Regards
Gabriele
Similar topics