Flashing on boundry wall

bobsjob

Just had some work done on my garden shed, extended the height and overall width, well within PP (<25sq/m and <3m in height). I think I have gotten myself into a muddle with the neighbour to the rear. My builder installed flashing from the extended wall down onto the boundry wall for a run off. Neighbour is now complainting about water redirection causing (potentially) a water pit.

Where do I stand, do I need to get this changed?

muffler

You can't run water off to a neighbouring property unless of course you had permission. Unfortunately you will have to get it sorted.

Gumbo

Build up a parapet wall and deal with roof run off on your own land.

bobsjob

thanks @gumbo & @muffler definitely something overlooked between myself and the builder! Builder back and flashing removed now.

Unfortunately a parapet wall would bring the height up too much and cause other issues, we are going with a gutter style flashing around the back and sides which would be sealed in against my side of the wall and drain my side.

Hopefully that does the trick, any other comments welcome!

standardg60

https://www.boards.ie/discussion/comment/123335689#Comment_123335689

Thankfully you have the space to do a gutter type flashing entirely on your side which didn't look to be the case. All guttering/drainage should be contained within your own boundary but you see this scenario all the time, I wouldn't have been happy if I was the neighbour either.

That said as long as the roof doesn't slope in that direction the amount of extra run off would be fairly minimal for a height difference of a couple of blocks.

bobsjob

@standardg60, roof itself is fully contained in its own parapet wall around the perimeter, sloping to the left and to my side, not neighbours side. Its just being able to deal with water trying to get down between my side of the boundary walls and the shed itself.

standardg60

https://www.boards.ie/discussion/comment/123335860#Comment_123335860

Yes I understand that. Basically the only extra water which would have ended up on your neighbours side is that would be wind driven against the higher wall rather than ending up on your side. This wouldn't have been a whole lot but it's still neighbourly to retain the status quo. Plus if your neighbour wanted to build a similar shed they'd then have to sort your run off.

bobsjob

yep exactly, did not consider the neighbour didn’t even cross my mind that it was wrong! 😑 rectification under way.