10/19/2026
In this video I put tracer smoke on a wind turbine and a static vent (a 750 slant back) sitting on the same roof. The turbine is doing its job and pulling hot air out of the attic. But when I move the smoke over to the static vent, you can see the air getting sucked down into the attic instead of going out.
What's happening is the turbine grabs the easiest air it can find, and that's the static vent right next to it rather than your soffits down at the eaves. So the air just loops across the top of the attic, and the rest of the space stays hot and stagnant. The whole system ends up working against you.
Here's the simple rule I tell homeowners:
- If you've got mostly static vents, stick with static vents.
- If you've got mostly turbines or powered vents, stick with those.
- if you want your system to perform the best, let's get you hooked up with some Roofivent ROTOs.
Your attic should breathe from low to high, with fresh air coming in at the soffits and hot air leaving up near the ridge. There's more to it than just this (balancing intake and exhaust, making sure soffits aren't blocked), but not mixing vent types is a great place to start.
Not sure what's going on up on your roof? Shoot me a message and I'll take a look.