We bought a house with Timberwise guarantees in place and last winter had water running down our end wall - that had a Timberwise damp course in place. This was after a long period of heavy rain where the end wall had a mini river running past it and so was sat constantly in water. We tried to claim and were told we needed to pay to transfer the guarantees to get somebody round, so £120 later and we see their surveyor. He says nothing to do with them, the water is running down the chimney. We argue that all water is coming out at 1m height - the height that rising damp occurs. He refused to accept liability and told us to get the chimney repaired. We have now just come through 2 months with heavy rain in, not heavy enough to form the river outside, and the chimney has stayed dry. Your Damp course has without doubt failed, you should man up, accept responsibility, and get this sorted.