Lime/hemp plaster

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DannyMac

DannyMac

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Yes, I was going to start a thread on this too though because i have limited experience and want to know more about it.

I have only done around 150m2 onto woodwool boards on ceilings and it was a pig to mix and spread.

I have over a thousand metres of it coming up soon :RpS_scared:
 
bubbles65

bubbles65

Well-Known Member
Lol.............them woodwool boards are 'rather awful' to work on aren't they - especially ceilings :RpS_scared:

Not that experienced meself with it to be truthful, but I enjoy the challenge, and the change. This lime/hemp combination comes up quite nice when you trowel it up, looks a bit like chipboard, quite an 'earthy' finish to it.
 
Jace

Jace

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sounds like and interesting material to work with, the only odd thing ive really done on a ceilin it rendering onto eml with only building paper and mf bars behind it:RpS_cursing: messy s**t
 
DannyMac

DannyMac

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Yeah we were using the medium grade stuff which had stems in it the size of my little finger. When the trowel skips over one of them it gets interesting.

One of the problems we had was it had to go on over 10mm thick, but put it on too thick then you get an area drop and it isn't easy to patch back up when the board is wet. The woodwool boards have no suction....it's all mechanical key.

Where abouts are you based bubbles?
 
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DannyMac

DannyMac

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Have you used it over bad walls, if so can you build it up quickly or do you have to let the scratch completely dry? (1mm a day isn't it)

Do you just wet the walls and is there a way of edging it without it dragging all over.

I was considering using one of those I sections when it has dried a bit.

So many questions and i have loads more....:RpS_biggrin:
 
bubbles65

bubbles65

Well-Known Member
Yeah, the place I'm on is very old walls which have been built out 70mm overall!!! It's being used for it's insulation properties with a product called 'Silverlite' which is used as a replacement for the sand as it's very light and has excellent U values apparently. I think it's a kind of volcanic ash, I'll see what I can find for you cos the suppliers ain't too far from you :RpS_thumbup:
 
mayti

mayti

New Member
stone work needs to be damped down ,you can build out thick but this will take a long time to dry out dont play with it when its wet ,once you lay it on flaten over once then leave to dry ,normaly i come back the next day trowel in with little water depending on how smooth finnish you require you need to let it pick up to quite a hard setting for fine finnish ,a lot depends on what your client wants ,if applying a lime putty finish over the top the hemp must be cured propoerly ,if you dont then can get resin bleeding through to your finish
 
mayti

mayti

New Member
no wouldnt use a staiaght edge as to much tearing from fibers try to lay it flats as possible ,you can put a floating coat of lime morter over scratch if you require staight walls most important thing let each coat cure properly ,a light wetting for following coats .it is a very flexible material very good for old ceiling with movement in
 
DannyMac

DannyMac

Private Member
Thanks, the client wants a finish just with the medium hemp. We achieved this on the ceiling by closing it in gently on day one with a spatula, then using a little water and trowel on day two.

If the wall really needs building out in places how would you go about this? Dub it out where needed, scratch and leave it a few days?
 
mayti

mayti

New Member
it is a very physical material to apply, very painful in your eyes ,needs to be mixed for at least 30 min in mixer for best results gently adding water depending on how fresh your material is
 
DannyMac

DannyMac

Private Member
mayti said:
you can put a floating coat of lime morter over scratch if you require staight walls most important thing let each coat cure properly
Click to expand...

Do you mean a scratch coat of sand and cement, then an inch or so of the lime hemp?

The property is a big old house about 300 years old and some of the walls are in quite a bad state.

I have been given a number to call to speak to a Mr Ireland down at your place. Are you him?
 
bubbles65

bubbles65

Well-Known Member
mayti said:
it is a very physical material to apply, very painful in your eyes ,needs to be mixed for at least 30 min in mixer for best results gently adding water depending on how fresh your material is
Click to expand...


Do you mix it up dry before adding any water?
 
mayti

mayti

New Member
no scatch coat of hemp is the same principals has lime mortar no cement as this wii not let your wall breath, no im not mr ireland although he will be very helpful to you ,am self employed and hired in by ty mawr for lime and hemp mortar courses ,they will give you as much help as they can .last big job i done went right through all rooms just scratching in hemp mortar took about a month .then went back around following same route for finishing coat
 
mayti

mayti

New Member
bubbles65 said:
What mix would you use for finishing coat?
Click to expand...
for more smoother finish can get fine hemp or you can finish with lime putty more rustic look medium hemp ,you can trowel again days after then you will get a smoother closer finish
 
DannyMac

DannyMac

Private Member
mayti said:
no scatch coat of hemp is the same principals has lime mortar no cement as this wii not let your wall breath, no im not mr ireland although he will be very helpful to you ,am self employed and hired in by ty mawr for lime and hemp mortar courses ,they will give you as much help as they can .last big job i done went right through all rooms just scratching in hemp mortar took about a month .then went back around following same route for finishing coat
Click to expand...

How much are your courses mate and how long are they?

Do you freehand exterior angles with a queenie?
 
mayti

mayti

New Member
what i do with my clients is show them some different finishes smooth , rustic etc let them pick what they like and also what type of building your in ,hemp can be shaped well around corners to form your own angles ,
 
mayti

mayti

New Member
there is a one day course and a two day course have look on website for price last yr £120 per day
 
bubbles65

bubbles65

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using this in the finish coat



7d0719fc.jpg
 
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