poor ventilation advice

[grumpydasmurf]

I was speaking with a home owner, a competitor roofer decided too bid ridge vent. On this person's house a ridge vent would normally be a great idea, however he has zero overhang, so no intake ventilation. As you may know ridge vent only works with equal or greater intake ventilation.

I spent half an hour trying to explain to the home owner why that the ridge vent is usually a better method of ventilation, however not in his case because he has no intake.

What do you guys do for ventilation when bidding on new roofs but there is no intake? Typically I just bid mushroom vents as the exhaust. Actually I try to upsell the creation of some intake but if it's not in the budget I am left with only one option, mushroom/breather vents.

Any advice?

[Rich]

Without eave venting I would either install gable end vents (not sure if your project has gables or hips), mushroom vents, or an interior fan that is ducted to a mushroom vent or end wall vent.
BTW - I think no overhang roofs are ugly..haha.

[grumpydasmurf]

Not likley to cut through the bricks... and IMO gable venting is a poor idea unless one side has a fan.

I agree roofs with no overhang are ugly.

[Rich]

And with no overhangs it makes it more difficult to seal up for weather/water proofing. The project I'm working on has 0 overhang. Well it has about 6" but it runs straight from the roof down to a piece of cast stone and back to the wall - anyway hard to explain. Essentially the water runs straight off the roof to the wall and down. :(