Heltershelter
New Member
Hi I have plaster infected with salt crystals which are drawing moisture from damp soot in chimney breast at internal wall with neighbouring property. have been advised to cut out plaster, apply salt neutraliser and damp course then plaster with salt retardant plaster. The issue is that before this was discovered a roofer said to try drilling into the chimney to allow air...im now concermed these holes will allow moisture through so not sure what to do! Any help would be appreciated...thanks.