Lime or gypsum

Monica

New Member
Hi, I recently had some electrical points chased up the wall rather than on skirting as I was having lots of work done in the room. The walls where the points have been fitted are lime plastered. I don't need the whole wall replastered just the parts around the electrical points. What should be used here? Is there a lime filler or is gypsum ok. Monica
 
Hi, I recently had some electrical points chased up the wall rather than on skirting as I was having lots of work done in the room. The walls where the points have been fitted are lime plastered. I don't need the whole wall replastered just the parts around the electrical points. What should be used here? Is there a lime filler or is gypsum ok. Monica


Best keep it like for like


Pink is s**t compared to lime

If you're lucky enough to have lime, stick with it
 
Lime or gypsum
 
Hi, I recently had some electrical points chased up the wall rather than on skirting as I was having lots of work done in the room. The walls where the points have been fitted are lime plastered. I don't need the whole wall replastered just the parts around the electrical points. What should be used here? Is there a lime filler or is gypsum ok. Monica
yeah I agree with like for like. Lime will also bond better with itself
 


Or tank it.
 


Or tank it.


Should have left it at the two links.

Last line mate.....
:tonto:
 
@Smudger1
no hydraulic lime indoors mate; the only place for hydraulic lime is in foundations and the occasional chimney at best. Floor screeds is also fine. Everywhere else go with pure lime.
Yep NHL = Non hydrolic lime ?
 
Last edited:
Yep NHL = Non hydrolic lime ?
NHL = Natural Hydraulic Lime
it's a type of hydraulic lime
cement is also a type of hydraulic lime
hydraulic lime = lime + pozzolana
the pozzolana transform the properties of the lime
pozzolana can be brick dust, fired clays, trass, volcanic ash, flywheel ash, etc

Back in the day, craftsmen mostly just used raw earth and lime. Sometimes they would add a certain amount of pozzolana if the situation called for it. Foundations are best built with hydraulic lime because it can set under water.

But everything above ground, everywhere the wind can reach, they traditionally used pure/fat lime. Because that type of mortar is much better at sucking the moisture out of the stones so that the wind can dry it (convective drying).

Hydraulic lime doesn't do this and that's why the stones (and wall) stay wet.
 
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