Membrane in a lead valley

[Co1]

Morning everyone. I could do with a bit of guidance on how to lay the roofing membrane into a lead valley. I’ve searched the internet and can’t seem to find anything that is clear. Any help would be appreciated. 
Thanks

Col

[nod]

You need A1f building paper This will stop the lead from sweating 

At £70 a roll many roofers will just Chuck a length of membrane in there 

But if you are going to do that you may as well use the cheap plastic valleys that all the mass produced houses are now using 

[nod]

This was the last one that I did 

[Dave Jones]

grp trays every time.

[Co1]

  On 08/09/2024 at 07:43, nod said:

You need A1f building paper This will stop the lead from sweating 

At £70 a roll many roofers will just Chuck a length of membrane in there 

But if you are going to do that you may as well use the cheap plastic valleys that all the mass produced houses are now using 

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Thanks a lot. So that goes between the roofing membrane and the lead? 

[nod]

  On 08/09/2024 at 12:35, Dave Jones said:

grp trays every time.

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Cheap 

[nod]

  On 08/09/2024 at 15:02, Co1 said:

Thanks a lot. So that goes between the roofing membrane and the lead? 

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Directly onto your timber valley 

[Co1]

Then the membrane over the top, and then the lead?

[makie]

  On 08/09/2024 at 16:23, Co1 said:

Then the membrane over the top, and then the lead?

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The lead goes directly on top of the building paper.

[Co1]

That’s brilliant, thanks a lot. 

[nod]

  On 08/09/2024 at 16:23, Co1 said:

Then the membrane over the top, and then the lea

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lead directly on the paper Then curl the edge of the membrane under the slate 

[Co1]

  On 08/09/2024 at 18:35, nod said:

 

lead directly on the paper Then curl the edge of the membrane under the slate 

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Thanks a lot. Much appreciated. 

[nod]

  On 08/09/2024 at 19:10, Co1 said:

Thanks a lot. Much appreciated. 

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Anytime 

[scottishjohn]

don,t forget to fit the lead valley in lengths --NOT one piece

about 1.5m each bit and overlap  them

this will stop any problems from expansion of the lead  when roof is hot

also easier to get a long valley looking good