Does anybody have any good guidance on parging old brick walls for air tightness?
Not sure if parging is the right word here in the UK, but I found the word used regularly on YouTube (mostly American).
I did come across it as something recommend to do for deep retrofits, but I can’t find any detail on how to do it so far. (The ‘How to built a Passivhaus’ guidance on page 36 generally recommends parging: Interesting reference documents - #5 by Tim_Gilbert)
In particular I am thinking to repair my internal walls with a relatively thin layer of lime plaster before adding plasterboard to get a smooth surface. It should help with moisture management and provide airtightness (rather than trying to tape plasterboard to get the airtightness layer). It just seems wrong to only put plasterboard directly onto the wall, which is what plasterers/builders would seemingly do.
Do you have some thoughts on this?
I haven’t found much guidance or standards on this I can use to perhaps do it myself, so I am just learning about different lime types and I was astonished to learn that lime plastering is actually a common way to plaster in Germany. So I will have a look for some guidance from there.
Anyway, if you have any good references or guidance on a good way to use lime plaster for airtightness in a retrofit, I would appreciate it you could share or pinpoint where to look.
Thanks.
P.S.: I have been looking to find something from the AECB on this, but can’t seem to find any guidance from them on retrofit on their website. I thought they would have a handbook for builders for example. Any pointers? Thanks.