Hi i am looking for a filler for a exterior wall, that has been rendered with what appears to be a semi flexible material. I imagine this was done to cover failed pointing or prevent damp penetration. The problem is that some of the surface has cracked and peeling, the majority of it is OK, but i thought it best to make good those parts that are bad. i need some advise on whats best for the job, as having it striped and rendered will cost close to £3.500. would welcome any advise on this as i need to make the best of the dry weather and get it sorted.