Hi all,
I have a slope roof with edge rods (pic) where the rain water would flow along the rods (outside) towards another building (as marked with red dash lines) and splashing the door/entrance.
I thought of using blue tac (marked in blue circle) which will block the rain water and redirect the flow downward (marked in blue dash line)


I would like to get your opinion if there is another cheaper solution than mine.
Thank you.