We've recently moved to a two story detached house which has a neighboring bungalow very close to the border. The property next door doesn't have any guttering which causes all of their rain water to hit the side of our house. I believe it is their responsibility to not do this, but are there any solutions we could do which would prevent any issues with damp penetration? The alleyway between the two properties is less than 1m wide so the solution doesn't have to be attractive. Is there any option to install a splash guard combined with guttering which feeds into our existing down pipe? I can't find anything suitable as a splash guard and my concern is this would just hold the moisture in place.