Plastering & Rendering

Lime based internal plaster

Anonymous user 28/02/2024 - 3.55 PM

1930s detached house has recently had some render repairs carried out, approx 50% of the house and I believe although lime was used in the mix for this it was hydrated lime and used along with cement. Initially thought that the house had cavity walls but on further inspection it is only the rear extension that does and the walls that have been rendered in this way are solid brick. Some concerns now about the possibility of damp problems further down the line given lack of breathability of cement based renders. Two questions - 1) if damp issues do occur from cement based render, is there any typical time frame to when this starts happening and 2) to counter the issue, could it make sense to apply a purely lime based / breathable render on the internal walls so at least one side is breathable, rather than using standard gypsum?