Retrofit Bathroom Exhaust Roof Vent with Screen and Damper

[Zardoz]

I am looking for a solution from all you wizards out there.

I have a home built in the mid 1990's. The bathroom exhaust fans vent to the roof without a damper or screen.

I would like to find a "topper" to retrofit on top of the roof with a screen and efficient damper.

It needs to be installed without tearing a portion of the roof out and putting it back together as the roof it tile and has solar panels on it.

Any Ideas?

 

[Jadnashua]

How high up does the existing vent go above the roof? Most roof vents I've seen have a bird screen available, but not one small enough to keep insects out. A tiled roof causes other issues trying to seal things. The one I have is very similar to this

https://www.grainger.com/product/BROAN-Roof-Vent-Kit-3WE95?breadcrumbCatId=2079

but, I don't think it would work out for a tiled roof. Home Depot has a similar one, but again, not for a tiled roof. If the existing vent is high enough, you could probably attach one of those to it.