Leaking roof bottom of velux window

[oinkment]

I have 5 velux windows in the kitchen on a sloped roof.
They have been fitted 5 years ago.
3 of them started to leak from around the bottom of them (not sure where).
Rain water is coming down into the roof space not through the window themselves but near the bottom of the fitting (near the profile / guttering? unsure of the name).

Any ideas?

 

[Alastairreid]

Post a picture of the outside of the offending area of window.

 

[oinkment]

You can see the window profile below:

Untitled

• oinkment
• 26 Nov 2013
• 1

The leak is happening below where the apron is.

Had a 'builder' come down and said the water is going through / up the apron and leaking though. He put some solvent along the edge of the apron to stick it down, which has stopped the majority of the leak.

I've put plastic in the area which is still leaking:

Untitled

• oinkment
• 26 Nov 2013
• 1

According to Velux there windows / Apron is tested in an air tunnel to check to see if water goes up on windy days.

Also according to their manual the apron needs to be hammered down around the edges with a wooden hammer.

Any idea?

Untitled

• oinkment
• 26 Nov 2013
• 1

 

[Alastairreid]

Looks like the pitch of the roofs not steep enough.

The wooden hammer is used to dress the lead into the profile of the tile! yours are flat.

 

[oinkment]

Looks like the pitch of the roofs not steep enough.

The wooden hammer is used to dress the lead into the profile of the tile! yours are flat.

The lead is actually some form of plastic, which I was asked to hammer down. The pitch of the roof is 15 degrees. It has been ok for the last 5 years.

 

[freddiemercurystwin]

the leak may not be occurring where the apron is, it could just be manifesting itself there, the leak could well be at the top of the rooflight or even higher.

Waste of time getting a 'builder' get a good roofer round.

15deg is right on the limit for Velux's the workmanship must be first class otherwise you're on borrowed time.

 

[hardmetalking]

Agree with Freddy!

 

[catlad]

Were they fitted with the low pitch underfelt collar.