As most have said, you should have a drainage channel. I would put it on the side of the patio opposite the door running the width of the patio and slope the patio by just a few degrees. Then connect the drainage channel to the downpipe. The industrial type of channel is pretty cheap but fancy covers can be sourced if the budget allows.
As most have said, you should have a drainage channel. I would put it on the side of the patio opposite the door running the width of the patio and slope the patio by just a few degrees. Then connect the drainage channel to the downpipe. The industrial type of channel is pretty cheap but fancy covers can be sourced if the budget allows.