Hello, I know there is lots of really useful information about using chaux render on this forum but I couldn't find the exact answers to my questions.. We are currently renovating our attic and have rendered up the existing stone walls with a sand / lime render (great stuff). We would like to cover this with a finishing white 'plaster' using a chaux : water mix, so that we do not have to paint over that. Also, we have constructed the walls of the rooms using plasterboard (not great but hurrying for birth of baby!) and would also like to use a lime-based 'plaster' on top of this too. We have tried various chaux / water mixes but as of yet, all have cracked and fallen off both the plasterboard and the render. Has anyone attempted to cover both materials with a chaulage? How did you apply it? What mixes did you use? I would be really grateful for any advice, thank you! Anna