We have a clematis montana planted against the back of our neighbours garage, We are aware that they can be invasive & keep it at a maximum of 9' high - about an area of 2' x 1' flops over to the top of his garage roof which is of flat felted construction.
Our neighbour says that this is causing damp.No shoots are allowed to grow up & under the felt overlap.
Will the plant cause damp on top of his roof in such a small area under these circumstances?
Thank you - Michael.
- 8 May, 2011