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8 replies
19k views
8 replies
Plaster joints between plasterboards.
Today we finished drywalling the entire ceiling in the hallway and living room. A few months ago, we did the same in the bedroom. When we then went to plaster the seams, we were recommended to use paper tape and that it should be glued with wallpaper paste before plastering on top. Before gluing, you should paint a layer with paste so that the drywall could absorb it. The problem arose when we plastered the second layer and went to sand it only to find that the tape had come loose from the drywall in several places, creating air bubbles. Not fun. Now we've been recommended to apply a little plaster in the seam and then press the tape in place, then, directly before the plaster dried, to go over it with more plaster. Then sand and plaster and sand... You know, the usual procedure when plastering. We aren't keen on getting a lot of air bubbles again, so what do you think? Is this the best way to plaster joints between drywall sheets? How have you done it, what did you use, and did it turn out well? Grateful for all wise tips.
I've tried both. I think "old school" works best. We also got air bubbles and excessively thick seams. Fiberglass is simple and cheap in comparison. Good luck. PerCissi-84 said:Today we plastered the entire ceiling in the hall and living room. A month ago, we did the same in the bedroom. When we then went to putty the joints, we were recommended paper tape, and that it should be glued with wallpaper paste before applying putty on top. Before gluing, you should paint a layer of paste so that the plasterboard can absorb it. The problem came when we applied the second layer of putty and went to sand it down, it turned out the tape had come loose from the plasterboard in several places and formed air bubbles. Not fun. Now we have been recommended to apply a little putty in the joint and then press the tape in, and before the putty dries, apply more putty over it. Then sand, putty, and sand... You know, the usual procedure for puttying. We are not keen on getting a lot of air bubbles again, so what do you think? Is this the best way to putty joints between plasterboards? How have you done it, what did you use, and did it work well? Grateful for any wise tips.
Fiberglass is more flexible but not as durable as a paper strip.
It requires technique, but after a few joints, you get the hang of it - I always apply a thin layer of putty in the joint, then the strip, putty at the same time as you smooth it in place with the putty knife, once you reach the end, press with the putty knife and tear off the strip.
I must admit it requires some training, but when you master the technique, it's quite simple.
I would say you can go ahead with fiberglass - Good enough result, albeit not quite as durable.
It requires technique, but after a few joints, you get the hang of it - I always apply a thin layer of putty in the joint, then the strip, putty at the same time as you smooth it in place with the putty knife, once you reach the end, press with the putty knife and tear off the strip.
I must admit it requires some training, but when you master the technique, it's quite simple.
I would say you can go ahead with fiberglass - Good enough result, albeit not quite as durable.
Paper tape and three different putty knives.
First, apply a thin layer in the joint, smooth it out so you get a flat surface with a putty knife that is narrower than the taper in the drywall.
Place the tape and press it down with the putty knife.
Apply more putty and smooth it out with a putty knife that is wider than the taper in the drywall sheets. Let it dry.
The next round of putty, I smooth out with the widest putty knife, 200mm or wider.
First, apply a thin layer in the joint, smooth it out so you get a flat surface with a putty knife that is narrower than the taper in the drywall.
Place the tape and press it down with the putty knife.
Apply more putty and smooth it out with a putty knife that is wider than the taper in the drywall sheets. Let it dry.
The next round of putty, I smooth out with the widest putty knife, 200mm or wider.
I also use paper strips in filler. A tip I've received that I think makes the setup easier is to measure the strips and then soak them for half an hour first. (They can easily soak longer, so I measure all I need for, say, a wall at once and then take them when I need them. You can let them drain for a few minutes before pressing them in.) When the strips are wet, it's easier to get them to stick to the filler and easier to see if there are any air bubbles. It can certainly get a bit messy, so it's important to cover well if you have a floor you're worried about.
A 10-year-old thread, but we have the same work ahead of us. YouTube says to use 3 different types of filler (first coarse, then medium, and finally fine). We're making a small interior wall and there will only be a total of 4 seams to fill. Do we need to buy three different fillers for this? I don't want to be penny wise but pound foolish either. 😅
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