I will fill in the holes in the chimney in the picture and plaster it.
I have been using KC.
A few questions:
1. There are metal fittings on the corners. I see a few options for how they should be plastered:
- I pull the plaster against the metal fittings, brush lightly on the metal afterward to get the right texture
or
- I plaster 10 mm over the metal with or without netting.
2. I want a thin wash on the arch so that the pattern of the brick is visible. My plan was to just brush it on. When I tested this, the thin layer seems to dry so quickly that it doesn't set; it remains like dust. What can I do there besides thoroughly wetting beforehand?
3. How large holes in the chimney can be filled with plaster alone? Now I've placed bricks in those larger than 10cm and a few cm deep.
I will fill in holes in the chimney in the picture and plaster it.
I've been using KC now.
A number of questions:
1. There are metal fittings on the corners. I see a few options for how they should be plastered:
- I pull off the plaster against the metal fittings, brush a bit on the metal afterwards to get the right texture
or
- I plaster 10 mm outside the metal with or without meshing.
The risk here is that over time it may crack along the outer edges of the metal profiles if you just pull off against them, etc. Meshing probably significantly counteracts cracking, but the brick won't show through at all then. It would look really nice if you could remove the metal fittings, but I assume they serve an important function as they are.
Jajjan said:
2. I want a thin coating on the arch so that the pattern of the brick shows through. My plan was to apply it with the brush. When I tested it, the thin layer seems to dry so quickly that it doesn't harden, it remains like dust. What can I do there besides thoroughly dampening beforehand?
Brick absorbs water quickly, pre-wet generously and for a good while before plastering and post-wet as well. Dusty surface is inevitable anyway, you can coat with a diluted water glass to bind the dust:
try it first on an inconspicuous area, I don’t know if there will be any permanent color shift with Biltema's silicate primer. Alternatively, you can paint with indoor silicate paint or kc paint or something.
Jajjan said:
3. How large holes in the chimney can be filled with plaster mortar only? Now I've inserted brick pieces in those that are larger than 10 cm and a few cm deep.
It is possible to fill fairly large ones, but preferably not thicker than a centimeter at a time and let it dry for some day in between. You seem to be thinking correctly by inserting brick chips with mortar around, that's good. It's called "svicka."
2. I want a thin coating on the vault so that the pattern of the bricks is visible. My plan was to apply it with a brush.
If you intend to use it as a chimney in the future..... have you confirmed this with the chimney sweep? They want the chimney plastered for the sake of tightness. Maybe it's best to check if it's OK to just coat it.
So, finally it's almost done.
(Now I see I've misspelled the title)
I chose to run a plank along the metal corners, thought it turned out OK. There might be small cracks between the wall and metal.
That part was fairly easy. Run with the plank and then brush a little so it looked nice.
Trying to apply a thin coat on the arch so the bricks would show didn't work out. I tried to brush on a loose mortar. But the brick structure still didn't show and it became very uneven. So it ended with applying a bit more and smoothing it out with the trowel.
Painted with silicate paint which turned out much lighter than we expected, but it's okay.
A vent from Gysinge I just fastened with mortar. Seems to be holding for now.
Click here to reply
Vi vill skicka notiser för ämnen du bevakar och händelser som berör dig.
