If you are talking about shingles the smell will fade pretty quickly after they are finished.
Tile roof tar smell.
A couple weeks maybe.
Basically when you have new shingles installed the sun cooks them to really get them to set onto your roof.
New asphalt shingles can give off a tar like smell that for some comes off as being very strong and irritating.
I smell roofing tar.
Roofing tar will also protect your roof from wind and from snow and water which can collect on a flat roof.
An hour ago i believed i didn t make a terrible decision that will exacerbate my migraine attacks.
Smelling the odors does not indicate over exposure.
Leaving the house open all night and a special 40 air conditioner filter diminished the odor greatly though the smell is worsening as the day warms up.
It s also entirely possible that air from the attic space is being drawn into your home from unsealed holes where electric cables and plumbing vent pipes penetrate the top plates of the walls that connect to the roof trusses or the ceiling joists.
This smell is because of the sealants on the asphalt shingles that naturally melt and set the shingles in place.
Today the roof is finished.
Using hot roofing tar can easily cause odor complaints because the odor is strong pungent and can be smelled at very low concentrations in the air.
Tar has an extremely potent and pungent odor.
My guess is that you are experiencing normal new roof smells.
Just as some individuals are extremely sensitive to tobacco smoke in the air many people.
If you are talking about a flat roof done by pouring hot liquid tar over it then i have no experience how long that smell will linger.
My head aches and i am feeling nauseated.
But i would think somewhat longer than for shingles.
Its just the volatiles in the tar escaping.
Odors from rubber roof adhesives have a sweet organic odor solvent odor that people begin to smell when the concentration in air is much higher.
Pros and cons of roofing tar.
Roofing tar is a good choice for a flat roof as this kind of material is highly resistant to the ultraviolet rays from the sun.