The damp course (slate) on my house has been covered completely in mortar, should it be removed?
I have been told by a friend that it bridges and the slate should be visible, therefore there may be possible problems in the future. The guys who did it say that it is ok and the slate should be covered. They pointed out that my neighbours house has mortar that covers the damp course.
Will it be ok to leave as it is or should I insist they re do it