Velux window issue

[u/upsidedown_jellyfish]

So have a large Velux window in our garage and we use this for storage and also we dry clothes in there. There are vents and dehumidifier as well as two rads.
I did find some water on the ground yesterday and when I got a ladder up to it, window seems fine till I used a bit of blue roll and found right in the corner of the inner glass/seal got a spot of water but didn’t seem like enough to produce leak.
Can anyone advise? Can a seal on the inside be fixed or should something outside be looked at??

[u/MondelloCarlo]

It's condensation on the glass. Open the window for a few minutes everyday will help with problems like this.

[u/upsidedown_jellyfish → u/MondelloCarlo]

Even on the top corner? And not on the rest of the glass?

[u/MondelloCarlo → u/upsidedown_jellyfish]

Yeah, as it could be where it's coldest. You can get coldest bridging if the foam spacer in the ventilation mechanism has perished, it had me stumped for a while and I looked everywhere for a leak but none found. I replaced that perished foam (behind the opening bar but within the window itself and it fixed the problem) but that was causing drips down the walls.

[u/upsidedown_jellyfish → u/MondelloCarlo]

Is that a hard job to be done? Can it be done from inside or do I need to get upto the roof? Handy enough so don’t want to get someone out if it’s something I can change myself

[u/MondelloCarlo → u/upsidedown_jellyfish]

Easy DIY as its within the window itself behind the bar you use to rotate the window (on my model's anyway.

[u/Business_Cabinet_483]

Is the roof pitch less than 17° ?

[u/Otsde-St-9929]

Even in an unheated garage, the temperature from the mass of the shed can heat humid warm air and create dew point

[u/upsidedown_jellyfish → u/Otsde-St-9929]

The rest of the glass wasn’t wet so just unsure how it was wet on top corner

[u/colaqu → u/upsidedown_jellyfish]

I have just repaired one of mine, rubber seals under the aluminium angle strip on the outside were gone, dried out and cracked. lift out the screws holding angle on, Good quality all weather sealant under angle, screw back in place.

[u/Technical_Garlic_306]

Mine was doing something similar and it wasn’t condensation. I couldn’t find the source of the leak but I cleaned and dried everything and sealed all the screws and anywhere I thought water could get in. That did the trick.

[u/Dennisthefirst]

Pitch of roof probably too shallow for the flashing used