Limping2040

I appreciate everyones replies.

Thanks. Any explanation on how water would get past the membrane if solid throughout a piece without any breaks in that area, as from as much as I can see its' possibly one sheet? If its one solid sheet from end to end? Or is the usual process to do sheets in sections. Wouldn't I have had water come past the layers into the room by now? There was a stone layer up there but water and wind has moved away from the lifting area as well as the sheet membrane moving it too now. As its sounded worse over this period because the winds been head on with it. The storm coming suggests the windws coming in from the other end so I'm praying it doesn't make it worse as it should be on the gable end. Owning property sucks.

So is it a case of the membrane being no good? Or it just more tricky to do so? As it's only one corner in strong winds that lifts. Just try to get a clear picture so when I approach a roofer at some point I can verify what they are saying.

The whole loft space once insulated under a grant from previous tenants owner. So your probably right. Any ideas on the solution.

I bought the house two years ago and it was replaced a year or so before that. Not sure if that's going to be avaliable. I assume it's going to be a new roof again?

Massive movement on flat roof membrane lifting in wind. This roof is a dorma conversion up in the loft space. Had a new flat roof before I bought it but I've been told before it started lifting that it was placed on top of the old membrane. Video of movement here. https://www.youtube.com/watch?v=Gck8Ctktp0Q Sorry its upside down How do I solve this issue, and why had it likely happened? Does the sheet need to be lifted put back down and some weight added too it?