Re: How to vent Grill Smoke
I think I would install something along the lines of a attic fan/gable vent or better would probably be a power vent (whirlybird).
Here's the thing, with the smoke rising and getting trapped in the roof structure, you've got to get an exhaust fan up there to remove it. A side venting gable vent would probably be the best/easiest, however the smoke is going to discolor the outside wall and eaves.
If you go with a power vent through the roof you won't have that problem. I believe that you can either purchase an eyebrow vent with a fan or you can get a whirlybird with a fan.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!