Hello!
A few questions regarding priming. I have a basement (house from the late '60s). On the concrete floor that we've sanded in virtually the entire basement, we have now applied primer to then wait for the tiler to come and lay tiles (2-3 weeks until then). On some parts of the concrete floor, there have been some "damp spots," which my father says is not a problem. But now to the questions.
1) Was it okay to prime so long before laying the tiles, 3 weeks before? Should we prime again?
2) Should you prime even on the self-leveling compound part when it has dried?
3) How should I think about priming regarding ground moisture? Father-in-law says there are no problems at all and that the primer is not dense but that the floor can "breathe," and will do so through the joints. But I'm doubtful, which makes me a bit worried. Does anyone know how it is? Used primer is UZIN PE 260
4) Do we need wide joints for it to breathe? We're using 60*60 tiles, but maybe 3 mm joint, is that enough?
http://www.englund-gruppen.se/produkter/forbehandling/primers-och-fuktsparrar/uzin-pe-260.aspx
Thankful for all help!
/Jesper
A few questions regarding priming. I have a basement (house from the late '60s). On the concrete floor that we've sanded in virtually the entire basement, we have now applied primer to then wait for the tiler to come and lay tiles (2-3 weeks until then). On some parts of the concrete floor, there have been some "damp spots," which my father says is not a problem. But now to the questions.
1) Was it okay to prime so long before laying the tiles, 3 weeks before? Should we prime again?
2) Should you prime even on the self-leveling compound part when it has dried?
3) How should I think about priming regarding ground moisture? Father-in-law says there are no problems at all and that the primer is not dense but that the floor can "breathe," and will do so through the joints. But I'm doubtful, which makes me a bit worried. Does anyone know how it is? Used primer is UZIN PE 260
4) Do we need wide joints for it to breathe? We're using 60*60 tiles, but maybe 3 mm joint, is that enough?
http://www.englund-gruppen.se/produkter/forbehandling/primers-och-fuktsparrar/uzin-pe-260.aspx
Thankful for all help!
/Jesper
Hello,
What do you mean by moisture spots? Elaborate...
1)
I don't think it really matters, you can vacuum the day before the tiler comes.
2)
Yes
3)
No problem as long as the footing is uninsulated. A tiled bathroom floor is constantly moist and dries out after 2-3 months under the tiles if you stop using the bathroom, in principle, unless you have underfloor heating. What are you going to do in the basement? A spa?
4)
3-4mm probably won't make much of a difference. 10mm is not aesthetically pleasing to me. I'd go with 3 mm.
What do you mean by moisture spots? Elaborate...
1)
I don't think it really matters, you can vacuum the day before the tiler comes.
2)
Yes
3)
No problem as long as the footing is uninsulated. A tiled bathroom floor is constantly moist and dries out after 2-3 months under the tiles if you stop using the bathroom, in principle, unless you have underfloor heating. What are you going to do in the basement? A spa?
4)
3-4mm probably won't make much of a difference. 10mm is not aesthetically pleasing to me. I'd go with 3 mm.
The moisture spots appeared when it was hottest outside, 25 degrees. That's when they started showing on the basement floor. I guess it's because the humidity level in the basement was high and is affecting the cold floor somehow? The spots are spread out in a few places, not in all areas of the basement.Kjellstrand said:
I think it’s "uninsulated," but I'm not sure.
No spa. I have a laundry room, "passage," two storage rooms, a toilet, and a "recreation room" intended to be some kind of living area. In total about 100 square meters.
I think most people talk about primer as a moisture barrier, which makes you a bit worried that it will get wet under the tiles later.
Best regards, Jesper
Most likely, it is due to humidity vs cold floor that the moisture spots have appeared. I get it in the stable sometimes when the doors are open in the summer.
It's good if you have historical facts from the basement a few years back to compare with.
It's good if you have historical facts from the basement a few years back to compare with.