Our neighbours at the bottom end of our garden have decided to build a shed at the boundary line (previously the boundary was just chicken wire/foliage). We don't have any issue with this per se but it's quite large and he's built it from the ugliest chipboard imaginable. I assumed he would be cladding it or something but have realised he can't be as the chipbaord is right up to the boundary line. We want to cover it with some screening on our side but he's put a row of windows along the top which the screening would cover. I'm assuming there's no issues with doing this as it's our side we are covering?