Maggie Quinn

Cristobal Cristo wrote:Are you going to install laths on the studs first?

Like a shim long ways on the stud? Or you mean ahead of the insulation?

Benjamin Dinkel wrote:

Maggie Quinn wrote:My concern was that it wouldn’t form a proper “key” to the lath. I was thinking of possibly stapling the wool (sheep’s) to hold it down a little bit to possibly leave some extra room for the key

I would't compress the insulation. It needs to be fluffly to do it's job.
When you apply the first layer of plaster make sure your plaster penetrates. That is make it somewhat more liquid and actually use pressure while applying.

Did you already install all the lath?
Did you look up what distance the lath usually was installed at?

I read that it should be 1/4-3/8” apart. Perhaps I’ll shoot for the wider gap and it will provide more space for a key. The insulation is pretty much right against the lath and is quite firm so I am concerned the plaster won’t have the space to push through.

Thanks everyone for replying. I know it does seem overkill haha I’m mostly doing it to have my hand at plastering. We’re going to use traditional lime plaster, 3 coats is what I’m told. My concern was that it wouldn’t form a proper “key” to the lath. I was thinking of possibly stapling the wool (sheep’s) to hold it down a little bit to possibly leave some extra room for the key. I’ll let you know how that goes!

-Maggie

I am wondering if anyone out there has built new lath and plaster walls? I have a wall framed and wool batts installed, the issue is I know the plaster will touch the insulation and that seems like it would be a bad thing. Let me know if anyone has run into this, thanks!

-Maggie

thank you! I heard all that and we are going a different direction, will have to make my hempcrete dreams a reality some other time.

I’m replacing two walls in the upstairs floor of my house in Vermont, USA. The house was conventionally built in the 90s using sheet rock softwood framing and fiberglass insulation. The floors are pine. I would love to use hempcrete as a replacement. I’m wondering if anyone has experience retrofitting with this material ? They are interior non load bearing walls. I’m mainly curious about the wall thickness and also it looks like ideally there is a masonry plinth supporting from the floor which in my case it would just be pine with the frame underneath. Let me know thanks!