fans ducted to roof, flap in wind
I've a new house with several fantech in-line fans. There's a grille in each room, and that has a butterfly flapper inside. It's been pretty windy here lately and the flappers are tapping. Drives me nuts. Apparently the wind across them is causing a negative pressure situation and that draws the flappers up enough to just to make them tap.
I don't have a picture of them, but I believe they were like these:
There's several of them up there and they all seem to doing this. They're not all on the same pitch or segment of the roof.
I'm wondering what choices exist to eliminate this? I'd be tempted to just put some felt or something along the inside of the duct down in the room. But I'd be willing to have the roofers put something different up there if it eliminated the problem entirely.
|All times are GMT -5. The time now is 09:21 AM.|
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2016 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging (Pro) - vBulletin Mods & Addons Copyright © 2016 DragonByte Technologies Ltd.