Shed roof at lowest point is all wet. Why?

[mikmikmikmik]

I have no idea why most of my shed roof joists are showing wet, nor why the wooden wall at the roof inside is showing wet.
Could this be something to do with ice because it has been freezing here for the past week, only heating up a bit yesterday?

The roof has that soft felt on it inside to stop condensation supposedly.

Could the water be wicking up from the ruined felt anti drip that is seen on the underneath outside of the roof sheets in on of the pictures?

I got an answer on screwfix forum which may well be true, not questioning it, just asking here also if there are any ideas?


Thank you.

 

[Harry Bloomfield]

I got an answer on screwfix forum which may well be true, not questioning it, just asking here also if there are any ideas?

Moisture in the air, in the shed, will have condensed out, and frozen, on the underside of that roof. When warmer weather came, the ice melted, then the water ran down the roof, to the lowest point, which is the roof timbers. Not a problem, it will quickly dry out.

The only way to avoid it, is to insulate the underside of the roof.

 

[noseall]

I have no idea why most of my shed roof joists are showing wet, nor why the wooden wall at the roof inside is showing wet.
Could this be something to do with ice because it has been freezing here for the past week, only heating up a bit yesterday?

The roof has that soft felt on it inside to stop condensation supposedly.

Could the water be wicking up from the ruined felt anti drip that is seen on the underneath outside of the roof sheets in on of the pictures?

I got an answer on screwfix forum which may well be true, not questioning it, just asking here also if there are any ideas?


Thank you.

This is one instance where spray foam insulation, is actually useful.

 

[Dec27]

I have no idea why most of my shed roof joists are showing wet, nor why the wooden wall at the roof inside is showing wet.
Could this be something to do with ice because it has been freezing here for the past week, only heating up a bit yesterday?

The roof has that soft felt on it inside to stop condensation supposedly.

Could the water be wicking up from the ruined felt anti drip that is seen on the underneath outside of the roof sheets in on of the pictures?

I got an answer on screwfix forum which may well be true, not questioning it, just asking here also if there are any ideas?


Thank you.

I’ve just bought some insulated roofing panels to avoid the above. Not cheap, but what is now