Paint over lime plaster - is water based emulsion ok to use?

[brybol]

We have fully stripped the old lining paper from 2 rooms in our house. The paper was laid quite poorly and came away easily, however it revealed old lime plaster which has quite a few hairline cracks. I have bought a lime based filler to smooth over the cracks and we intend to just paint this room. Do i need to use a breathable paint like clay paint or graphenstone/earthborn or is a water based low VOC paint ok (Coat paint)?
Are water based paints in any way breathable for old walls?

We had to have the old lathe ceiling pulled down and replaced - this is now gypsum plaster on the ceiling, so the room is a bit of a mix of plasters now

 

[StephenStephen]

Another option is to lime wash - buy a tub of lime putty and water it down. It will take a number of coats and may end up chalky in my experience.

I found this helpful:

Lime in Building - A Practical Guide by Jane Schofield

If you want to use lime to repair or redecorate an old or natural building but are unsure where to start or what to do, then this booklet is for...

www.blackdogpress.co.uk