Roughcast / wet dash on board?

B

Blowfly

New Member
Hi, newbie here. General builder, joiner, plumber, tiler, jack....
I have built a tiny porch infill extension in SIPs that will have cement or similar carrier board to finish.
The main house is wet dash - roughcast & the customer would be overjoyed if the infill walls looked the same. I have tried to let them down gently but just on the off-chance, is there anything that at least will give a very textured / wet dash similar finish on board?
I had a suggestion of Weber LAC, fibre mesh then Wpral M using Tyrolean splatter box but Weber advised not, or at least it's not a recommended system....
Any suggestions gratefully received!
 
Blowfly said:
Hi, newbie here. General builder, joiner, plumber, tiler, jack....
I have built a tiny porch infill extension in SIPs that will have cement or similar carrier board to finish.
The main house is wet dash - roughcast & the customer would be overjoyed if the infill walls looked the same. I have tried to let them down gently but just on the off-chance, is there anything that at least will give a very textured / wet dash similar finish on board?
I had a suggestion of Weber LAC, fibre mesh then Wpral M using Tyrolean splatter box but Weber advised not, or at least it's not a recommended system....
Any suggestions gratefully received!
Click to expand...


K rend LW?
 
I have dashed on Knauf aqua panel. Base coat Krend HP 12 with full Krend mesh. For dash receiver i had to use an bagged OCR , over mixed with febmix added.
I could not find any supplier who would sell me less then a full pallet of dash receiver.
 
Thanks, I took it from KRend that they had no useful suggestion to make, other than a standard thin coat, which is obviously the easiest solution, but not what I asked them! I saw the KRend roughcast but its for masonry only.
Bobski, LW is a pretty fine surface & on this job the house has a very chunky roughcast - I realise this would not be achievable on board but was hoping for something rough-ish.
Someone has previously re-rendered a bay window with dry dash that's been painted (I think) - not as rough as the roughcast but not too far off.
My concern with using any sand cement type render is cracking due to movement & it's not advised on carrier board.
Malc, how did the the OCR work on the HP12+mesh? (Which OCR?) is it still there & sound? :)
BTW, although I've done a bit of plastering & dabbled in some lime render, I'm just a general (mostly interiors) builder, not a renderer. I hope to get someone in to do it properly & leave a happy customer, so I can finally retire!
 
Blowfly said:
My concern with using any sand cement type render is cracking due to movement & it's not advised on carrier board.
Malc, how did the the OCR work on the HP12+mesh? (Which OCR?) is it still there & sound? :)
BTW, although I've done a bit of plastering & dabbled in some lime render, I'm just a general (mostly interiors) builder, not a renderer. I hope to get someone in to do it properly & leave a happy customer, so I can finally retire!
Click to expand...
I used HP12 with full mesh and a good scratch. left to cure, now I had a good key for the OCR. I gave the scratch a coat of PVA as they where large areas and I did not want any suction. I use Wickes OCR I would have liked to have used a dash receiver but not available. You could try Rendit in Doncaster they may have a receiver.
 
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