Best supplier for internal breathable Lime plaster?
Discussion
Morning,
We are having the cement plaster removed and replaced with brethable Lime plaster on our cottage (solid slate walls, circa 1709).
My dad is a plasterer so he is doing the work, but doesnt know about the lime plasters too much, so asked me to do the research and buying of the products.
There are lots of suppliers out there but dont know the good from the bad, anyone know of a good supplier, both quality and price.
Thanks
We are having the cement plaster removed and replaced with brethable Lime plaster on our cottage (solid slate walls, circa 1709).
My dad is a plasterer so he is doing the work, but doesnt know about the lime plasters too much, so asked me to do the research and buying of the products.
There are lots of suppliers out there but dont know the good from the bad, anyone know of a good supplier, both quality and price.
Thanks
Mike Wye is pretty close to you.
https://www.mikewye.co.uk/
There is also Ty Mawr in south wales.
They both do lime courses so might be worthwhile doing a course to familiarise yourself with the different products on offer.
If the building is listed, which I suspect it is, you'll probably need to apply for listed building consent, depending upon what work you are doing. Best to speak to the local planning office as if you do anything without approval you could end up in a mess. Also a good practice to get all the consents as you'll have a pile of documentation when you come to sell, which shows you've done everything by the book. The council will either have their of Conservation Officer or use a consultant - it always good to have them on your side.
You could contact jason61c on here who's used lime and I thought was in your area but his profile states he is Lincs now?? Not aware that he's moved unless I was mistanken thinking he was near Exeter.
FFG
https://www.mikewye.co.uk/
There is also Ty Mawr in south wales.
They both do lime courses so might be worthwhile doing a course to familiarise yourself with the different products on offer.
If the building is listed, which I suspect it is, you'll probably need to apply for listed building consent, depending upon what work you are doing. Best to speak to the local planning office as if you do anything without approval you could end up in a mess. Also a good practice to get all the consents as you'll have a pile of documentation when you come to sell, which shows you've done everything by the book. The council will either have their of Conservation Officer or use a consultant - it always good to have them on your side.
You could contact jason61c on here who's used lime and I thought was in your area but his profile states he is Lincs now?? Not aware that he's moved unless I was mistanken thinking he was near Exeter.
FFG
Edited by FlipFlopGriff on Thursday 2nd February 13:04
May be a bit late to the party but happy with Ty-Mauw lime: https://www.lime.org.uk/
I did some searching recently and found that they had the cheapest delivery on ready mixed plaster (which is a cheap material).
The plaster didn't go as far as I expected (had to order a second batch) and each coat took the best part of a week to dry... be patient!
I did some searching recently and found that they had the cheapest delivery on ready mixed plaster (which is a cheap material).
The plaster didn't go as far as I expected (had to order a second batch) and each coat took the best part of a week to dry... be patient!
Cheers Onedsla, I'll check them out too.
Doesnt really matter where in the country the supplier is, seems delivery is same price and still next day.
Takes between 72 hours and a week to dry between each coat too!
Doesnt really matter where in the country the supplier is, seems delivery is same price and still next day.
hyphen said:
How is it mixed and applied?
Just wondering how different it is to work with than normal multi-finish.
Comes pre mixed normally, and normally 3 coats, base coat with goat hair, scratch coat with less got hair, top coat.Just wondering how different it is to work with than normal multi-finish.
Takes between 72 hours and a week to dry between each coat too!
Please let us know how this goes. I've got to do something similar this year.
I like the idea of a plaster that you can keep working for _ages_ due to complete ineptitude coz that's my skill level.
R.e. the time needed to mix the stuff, if I remember correctly, the really time consuming bit is after you slake the lime. You leave it sitting in water for days to form a lime putty that is usable ... and it remains a usable putty in that state for ages.
At the absolute opposite end of the spectrum, according to an ex-pat relative, it's normal to plaster with plaster of Paris in Argentina. They mix the stuff up on the board with the float and apply it immediately to a small area of the wall and have to get the finish right pretty much first go. You don't get the opportunity to float a big area. My uncle, who's a civil engineer and a real craftsman, was seriously impressed with the skill of the guys working with this stuff.
I like the idea of a plaster that you can keep working for _ages_ due to complete ineptitude coz that's my skill level.
R.e. the time needed to mix the stuff, if I remember correctly, the really time consuming bit is after you slake the lime. You leave it sitting in water for days to form a lime putty that is usable ... and it remains a usable putty in that state for ages.
At the absolute opposite end of the spectrum, according to an ex-pat relative, it's normal to plaster with plaster of Paris in Argentina. They mix the stuff up on the board with the float and apply it immediately to a small area of the wall and have to get the finish right pretty much first go. You don't get the opportunity to float a big area. My uncle, who's a civil engineer and a real craftsman, was seriously impressed with the skill of the guys working with this stuff.
I bought it premixed, lime putty in 900kg loads just scooped it out into a bucket it is pretty sandy and non sticky at this point. You knock it up which is basically agitating it and knocking it around like it is a lump of pizza dough. It becomes more pliable and sticks together better. It's ready to be applied then, main thing is to keep it damp over a few days as the slower it dries the harder/better it sets. It is nothing like working with multi finish but it deffo isn't hard as it doesn't go off for hours/days.
Another vote for Ty-Mawr here. Used their plaster on a slate house to (Blaenau ffestiniog - what other material could it be?)
However, here's a bit of a but - we lime pointed both the inside and outside walls to stop the driving rain coming through the wall. We also filled the rubble wall with a lime and glass mix. But the water still came in, and the internal wall went green (damp plus warm = mould). So in the end I platered the outside wall with good old fashioned cement - and that pretty much cured the water issue. So in my experience the lime plaster is a good story, but perhaps not quite as credible in the real world. (Just a though, but it does look nice)
However, here's a bit of a but - we lime pointed both the inside and outside walls to stop the driving rain coming through the wall. We also filled the rubble wall with a lime and glass mix. But the water still came in, and the internal wall went green (damp plus warm = mould). So in the end I platered the outside wall with good old fashioned cement - and that pretty much cured the water issue. So in my experience the lime plaster is a good story, but perhaps not quite as credible in the real world. (Just a though, but it does look nice)
Another happy Mike Wye client here.
Did the one day course about ten years ago, and have used lots of lime plaster and mortar in a 16th century stone house. I'm sure it will vary from case to case, but having replaced gypsum plaster with lime, damp issues fully resolved!
Treat lime with care though if you want to keep your skin and eye sight!
Did the one day course about ten years ago, and have used lots of lime plaster and mortar in a 16th century stone house. I'm sure it will vary from case to case, but having replaced gypsum plaster with lime, damp issues fully resolved!
Treat lime with care though if you want to keep your skin and eye sight!
I've used the lime hemp plaster from Ty Mawr which has some insulation properties and a texture and is a bit more forgiving with the getting it reasonably flat. I've used Earthborn clay paint which is fantastic but put some water in it otherwise it sticks like s
t to a blanket.
17th century farmhouse and listed but we wanted to use traditional materials anyway so its a long slog removing 50 years of cement/plaster, ignorance and bodge jobs but getting there.
FFG
t to a blanket.17th century farmhouse and listed but we wanted to use traditional materials anyway so its a long slog removing 50 years of cement/plaster, ignorance and bodge jobs but getting there.
FFG
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