what's wrong with my roof?

[FlipFlopDude]

My roof meets a wall with a steel beam, not a regular wall. The problem is that the lead flashing, where the roof meets the wall, keeps leaking when it rains hard and the wind blows. My bro has helped me seal it a few times with mastic, but it still leaks.
The lead is held down with little strips of hangers and there are tiny gaps next to them. I think the rain is getting blown up the roof tiles, under the metal flashing, through those little gaps, and then running down the wall and into my house. It only happens when the weather is really bad. I'm thinking of either using a wider lead to cover more of the roof tiles or putting mastic directly where the lead meets the tiles to seal those gaps. I had a roofer fix it, but he can't seem to find the problem

 

[CheekyCheeks]

i think your best bet is to use a wider piece of lead one that cover more of the tiles than now and use a uv resistant roofing sealant

 

[Megalodon]

My roof meets a wall with a steel beam, not a regular wall. The problem is that the lead flashing, where the roof meets the wall, keeps leaking when it rains hard and the wind blows. My bro has helped me seal it a few times with mastic, but it still leaks.
The lead is held down with little strips of hangers and there are tiny gaps next to them. I think the rain is getting blown up the roof tiles, under the metal flashing, through those little gaps, and then running down the wall and into my house. It only happens when the weather is really bad. I'm thinking of either using a wider lead to cover more of the roof tiles or putting mastic directly where the lead meets the tiles to seal those gaps. I had a roofer fix it, but he can't seem to find the problem

Yeah, wind-driven rain can get under poorly sealed flashing real quick. What's gonna help is having wider lead flashing but you gotta install it really perfectly in order for it to work. And check capillary gaps, use lead clips.

 

[Ground3dGuy]

Those are some great insights. I faced a similar problem years back with an old cottage where the lead flashing connected with a stone chimney. The roofer tried patching it a few times with sealant, but it kept leaking whenever there were storms. Eventually, we decided to replace the flashing with a wider piece and took our time sealing every little gap. Plus, using proper clips to secure it really helped.

It definitely seems like going for a wider lead flashing and sealing those small gaps is the right approach. Have you checked if the flashing is still sitting flush against the tiles all the way along the edge?