Leaking porch roof

Baldytyke88

At first I thought the issue might lie with the mortar and the slight crack at the top, but could water be getting under the flashing, if that is what it's called. I have noticed water dripping on the inside wall; last night there was a heavy downpour.

I do have a tin of thick black sealer.

Section62

https://forums.moneysavingexpert.com/discussion/6681555/leaking-porch-roof

The first thing I'd check is the creative way the soil pipe has been felted. TBH it is very unlikely that arrangement will ever give a durable weather-proof solution - not least the difficulty in sealing both around the pipe and also the felt upstand ('flashing') to the wall, where the pipe is closest to the wall.

I could be wrong, but it looks like the collar/flashing around the soil pipe simply consists of a strip of felt wrapped around the pipe?

bjorn_toby_wilde

That downpipe is the first place I’d check too.

Plenty of your sealer, around the back of the pipe especially, may do the trick.

stuart45

The whole job look a bit of a bodge. You should have a lead flashing covering the felt upstand. Felt shouldn't be bent into a joint to form a flashing as it can crack. Looks like water can run off and for the timber over the window as well. Ideally there should be a cavity tray as well, because the external wall becomes an internal wall inside the porch.

Baldytyke88

https://forums.moneysavingexpert.com/discussion/comment/82120729#Comment_82120729

The water does not come down there, it trickles down the inside wall, I need to get my ladders and black sealer so I can reach the pipe.

Section62

https://forums.moneysavingexpert.com/discussion/comment/82120759#Comment_82120759

The water does not come down there…

Roof leaks are tricky to deal with because very often the water flows along/over things like rafters or the ceiling plasterboard and appears in the room in a different position to where the actual leak is.

For example, if the leak is around the soil pipe on the outside, but the soil pipe is relatively well sealed where it goes through the ceiling, then rather than running down the soil pipe below the ceiling the water could accumulate on the top surface of the plasterboard and flow towards the wall.

Baldytyke88

I could not reach the far side, not sure where the water was coming from.

grumpy_codger

Is it a cavity wall? If so, there can be a cavity tray (possibly with weepholes) above the door and theoretically it can be water getting into cavity higher up and intercepted by the tray.

Baldytyke88

https://forums.moneysavingexpert.com/discussion/comment/82121257#Comment_82121257

The wall is the outside wall of next door, the side of their house. It's brick. It was raining really heavily. I need more rain to see if the black sealer has solved the issue.