"Mikepier" wrote in message
...
Here are some pics of my skylights and roof

http://picasaweb.google.com/lh/photo...eat=directlink

The curb on your lights look very small, hard to tell from the picture.
Most curbs are either 4" or 6", which will accept proper flashing.

Do you know if the side flashing is single or step? I do not see any apron
flashing, could be the pictures?

You may want to consider new ones, simply because seals go bad on lights.
This would be an ideal time to replace, with a quality light such as Velux.
How old are these?

Remember, you want proper flashing. Mastic/tar is a very poor substitute
for flashing.