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Post by tebano on Jul 29, 2018 14:31:59 GMT
Hi all I finally finished my oven and now I am thinking about my final plaster layer and paint. Can anyone give me any word of advice on lime plaster (i.e. type, thickness, drying time etc) and a breathable paint such as lime wash. Alternatively, could I paint directly on to the cob layer without render?  |
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Post by dave36 on Jul 29, 2018 18:22:53 GMT
Hi all I finally finished my oven and now I am thinking about my final plaster layer and paint. Can anyone give me any word of advice on lime plaster (i.e. type, thickness, drying time etc) and a breathable paint such as lime wash. Alternatively, could I paint directly on to the cob layer without render? |
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Post by dave36 on Jul 29, 2018 18:24:04 GMT
I’d strongly recommend K Rend - easy, breathable, comes in colours, search the site for more info, d
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Post by tebano on Jul 31, 2018 19:23:28 GMT
Thanks very much I will look into it!
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Post by tebano on Aug 1, 2018 19:29:52 GMT
First cracks are starting to appear! nothing major but I suspect more might appear when I light it for first time. Any suggestions?  |
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Post by devontiger on Aug 1, 2018 20:21:33 GMT
teb, what is that top layer made from? Clay?
Looks like there is nothing to hold it together.
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Post by dave36 on Aug 2, 2018 6:48:58 GMT
First cracks are starting to appear! nothing major but I suspect more might appear when I light it for first time. Any suggestions? Tebano, I have a similar oven (see London newbie in clay / cob threads 2016), but I went for clay then blanket, rather than clay / cob. Long story short, you’re going to get more cracks. Fill in with a slightly watery clay mix, squeeze it all the way in and keep repeating until the cracks stop coming. Good luck! |
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Post by tebano on Aug 5, 2018 12:43:09 GMT
Hi
Thanks for the advice. The insulation mix is cob (clay+ sand + straw) but perhaps not enough straw.
I will try with a wet mix and see how it goes. I've covered with a plastic cover so it dries slowly in this hot weather.
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Post by tebano on Aug 5, 2018 13:12:05 GMT
I’d strongly recommend K Rend - easy, breathable, comes in colours, search the site for more info, d Hi Dave It looks like a good product, dd you notice any cracking? it is cement based so I was wondering if would expand with the heat and create cracks. Colours are great, what is yours, 'rosemary'? |
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Post by dave36 on Aug 5, 2018 13:58:18 GMT
I’d strongly recommend K Rend - easy, breathable, comes in colours, search the site for more info, d Hi Dave It looks like a good product, dd you notice any cracking? it is cement based so I was wondering if would expand with the heat and create cracks. Colours are great, what is yours, 'rosemary'? Hi, No cracking, it is slightly elastic (I am told), but mine went on top of some ceramic fibre blanket. My guess would it would be fine on a cob oven, but want to use sub-base too (K rend product, name may not be spot in). The colour is terracotta. Dave |
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Post by tebano on Aug 7, 2018 19:02:56 GMT
Hi Thanks for the advice. The insulation mix is cob (clay+ sand + straw) but perhaps not enough straw. I will try with a wet mix and see how it goes. I've covered with a plastic cover so it dries slowly in this hot weather. I have repaired the cracks with wet mix twice opening the cracks so I could insert more mix. But they keep on appearing, do they eventually settle?   |
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