Hi
We have had some indian slate layed by our builder. I have enclosed some pictures of it but the slope for water drainage seems excessive. They said they were going to put some galvanised drainage channels in along the wall edge and take it to a drain. They have instead sloped the whole patio into one drain. In the photo i think it looks awful with such a slope angle against the house wall. Is it just me or is this the way its done?
https://www.dropbox.com/s/l0r000clrwlfwzm/20180623_194931.jpg?dl=0
https://www.dropbox.com/s/ehmnetg7ki9zc33/20180623_194945.jpg?dl=0
https://www.dropbox.com/s/1kq7lhywbvf355n/20180623_195009.jpg?dl=0
https://www.dropbox.com/s/67zuoeydxqcxipj/20180623_195019.jpg?dl=0
Any advice is appreciated