Problems with my roof Electrical Advice

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Problems with my roof Discussion ThreadProblems with my roof Electrical Advice

I mentioned it a couple of times on other threads, and will link to here from those....

I found this diagram on t'internet showing how my roof has been constructed... closest anyway.

[ElectriciansForums.net] Problems with my roof


In my situation, the cavity wall on the left there has been removed, with a steel beam holding it up. Modern timber frame house with external rendered brick.

Our lead flashing isnt chased into the render.... fixed with a timber beam, folded over and down onto the tiles. This is always where they think the water is getting through, and its been sealed time and time again with mastic. The water still gets through.
The lead is also secured with hangers.... 2 inch wide strips of lead that come from underneath, and folded over the edge.
There is a tiny, maybe 2mm gap either side of this hanger

I believe the water is being blown uphill on the surface of the tiles, UNDER the lead flashing... next to the hangers.... eventually over the tile, and down the surface of the wall, under the roof.
It only leaks when its very heavy rain, and strong winds..... so its only happened a handful of times since it was first done....
Its a shallow pitch.... not 45 degrees... but not flat either... maybe 20 -30 degrees?


My suggestion of a solution... is to either use wider lead... so it comes down the tile further..... or use sealent, mastic or whatever where the lead sits on the tile, filling the gap.

Both the original roofer, when the extension was built 2015, and the new roofer..... who "repaired" it in august this year, couldnt find the issue.

Problems with my roof for the original thread on Electricians Forums
 

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Problems with my roof Electrical Advice
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