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58 replies
23k views
58 replies
Floor gypsum - why?
Possible, but still need to build up the floor with 12-13mm so floor gypsum fits well. No idea what is correct or not, but he, like many others, talks about gypsum being a dead material that doesn't move and such. And that much more self-leveling compound is needed on wood substrates.Mikael_L said:
Yes, now there are two questions here:
1. K-rauta guy or Jon, who is right regarding upcoming industry regulations? Generally, I believe in Jon.
2. Floor gypsum in Thomas' floor?
The new regulations have not come into effect yet (assuming Jon is right), which means it's still considered professionally done if it's floor gypsum. Moreover, there are surely many floors done that way that are doing well? If there is no moisture barrier under the gypsum/chipboard floor, then the moisture that penetrates through the sealing layer should dry well. I've understood it to mean that it is the moisture sensitivity that would be the reason to stop using gypsum in the floor.
That's how I interpret what has been written in this thread before + other threads. I could, of course, be completely wrong.
1. K-rauta guy or Jon, who is right regarding upcoming industry regulations? Generally, I believe in Jon.
2. Floor gypsum in Thomas' floor?
The new regulations have not come into effect yet (assuming Jon is right), which means it's still considered professionally done if it's floor gypsum. Moreover, there are surely many floors done that way that are doing well? If there is no moisture barrier under the gypsum/chipboard floor, then the moisture that penetrates through the sealing layer should dry well. I've understood it to mean that it is the moisture sensitivity that would be the reason to stop using gypsum in the floor.
That's how I interpret what has been written in this thread before + other threads. I could, of course, be completely wrong.
I have to ask something about the floor. Can't you lay floor gypsum on the entire bathroom floor except where the shower will be? I mean using self-leveling compound where the shower is. This is if, for example, you're only going to have shower doors and no cabin. If you then have tiles over the entire floor, can't you do it that way?
I'm right.Mikael_L said:
Floor gypsum has hardly been a problem, but it will be phased out when cardboard gypsum is banned in the entire bathroom. The reason for not using it is that it's completely unnecessary since you have to level the slope anyway. And it's still completely allowed.Mikael_L said:2. Floor gypsum in Thomas's floor?
The new rules haven't come into effect yet (assuming Jon is right) which means it is still considered professionally done if it's floor gypsum. Moreover, there are probably many floors done that way that are doing well. If there's no moisture barrier under the gypsum/chipboard floor, then any moisture penetrating the seal can dry out well. I have understood it as the moisture sensitivity being the reason to stop using gypsum in floors.
Thomas: If it was 12 mm up to the edge of the drain, that's perfect. That's exactly how it should be if you're going to self-level on the chipboard. But maybe you've already laid the gypsum, and that will surely work out fine too.
The floor plasterboard is being laid shortly, primed the chipboard yesterday. As mentioned, it's not completely sealed around wells and pipes, so the plasterboard will be perfect for that. And then there's the fact that wood isn't a dead material. So for me, it's decided that it will be floor plasterboard now anyway.jon_h said:
Which builders are you talking about then? Not the carpenter you mentioned earlier in the thread anyway. Those who have that argument don't know what they're talking about. This is a proven construction, one of two allowed in the industry rules of PER. Additionally, it is a construction that all putty suppliers and all insurance companies approve. There are no problems with this construction. The construction you have chosen, however, will soon be banned. What are your thoughts on that?
And you, who are not knowledgeable in the subject, choose for some inexplicable reason to listen to those who go against industry rules, material suppliers, and insurance companies. What would it take to convince you? What evidence do you want, Thomas?
And you, who are not knowledgeable in the subject, choose for some inexplicable reason to listen to those who go against industry rules, material suppliers, and insurance companies. What would it take to convince you? What evidence do you want, Thomas?
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