Installing calcium silicate boards where the flue pipe will run from a top-connected wood stove. Does anyone have suggestions on which primer can withstand heat? The boards will then be plastered. On the backside, I used Byggmax’s “primer plaster and concrete.” The only heat-resistant primer I can find is Promat’s Promafour Primer. The only place in Sweden I've found that sells it is PBS.nu, but it's so unreasonably expensive.
https://www.pbs.nu/sv/skorstenar/br...MIi72buKCDhAMVlBiiAx1y4wGdEAQYAiABEgIz9vD_BwE
https://www.pbs.nu/sv/skorstenar/br...MIi72buKCDhAMVlBiiAx1y4wGdEAQYAiABEgIz9vD_BwE
Found something more reasonable in price?
No, I used the same primer on both sides, went well, consulted with different companies and all were sure it would go well. The stove shop that built a wall of calcium silicate boards in our living room used Webers Gypsum as a primer, stove and half-meter pipe against that wall, has gone perfectly well two years later, no signs of any issues, almost constantly using the stove year-round.
Looks good!
I went with my intuition and attempted it without primer.
I only have a small panel on the ceiling above the sauna and it's mostly about giving it a different color, so an even plaster layer isn't the main concern.
Here is a picture where I haven't plastered the sides yet.
I was quite generous with moisture for a few days and the plaster seems to have set well... we'll see how it holds up.
I went with my intuition and attempted it without primer.
I only have a small panel on the ceiling above the sauna and it's mostly about giving it a different color, so an even plaster layer isn't the main concern.
Here is a picture where I haven't plastered the sides yet.
I was quite generous with moisture for a few days and the plaster seems to have set well... we'll see how it holds up.
