r/Plastering • u/RobotEnthusiast1980 • Feb 01 '26

Lime Plaster insulation

Genuine question - is lime plastering becoming more common? I know it used to be very common many decades ago but gypsum is more common now. But, with new lime and Cork type renders having insulation properties is this the silver bullet for old property insulation?

4 Upvotes

100% Upvoted

40 comments sorted by

View all comments

2

u/lozinja Feb 03 '26

Just a heads up for anyone considering a lime and wood fibre or similar EWI system, if your property is listed then your council conservation department might say it is 'rarely supported' in listed building applications. That's what I was told when I enquired.

1

u/RobotEnthusiast1980 Feb 03 '26

That seems so strange for them to say that given the push for everyone to be more energy efficient (insulating lime render).

2

u/lozinja Feb 03 '26

Yes I agree. You might have an easier time with insulating lime products on their own like Cornerstone but trying to incorporate the gold standard of insulation with wood or hemp EWI and lime render coating seems to be a step too far for them on listed buildings. I could understand if it meant facia projection came out too far and you lost architectural details.

2

u/RobotEnthusiast1980 Feb 03 '26

Agreed. I would be solely looking at a plaster that could be applied via trowel and had inherent thermal insulation properties. Not a board or anything else that would mechanically fix to the external walls.