As part of the work, they replaced a skylight. In the room where the
skylight is, there is a smell of roofing cement. Actually, the smell
travels
throughout the house because it gets picked up in the air conditioning
system, but is strongest near the skylight and especially in the heat of
the
day.


Unless the skylight is open, nothing that they put on the outside
ought to be affecting the air on the inside. (if it does, you're
going to have an interesting heating season....)

So there has to be sealer, or tar, or something, on the
INSIDE of the window, unless you're just confusing the
smell of new vinyl, with that of cement. If it's the
latter, it will stop eventually. Grab a chunk of PVC
pipe, and cut it with a fine-toothed saw or file.
Is the smell anything like that?

--Goedjn