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Roof Vent Damper Noise

Paul Beasley asked 2 years ago
re: Roof vent cap on bath exhaust vent The vent cap has a screen and damper. However, in strong gusts of wind, the wind creates a negative pressure that sucks the damper open and then slams it shut. This is annoying and actually wakes me up during the night. Is there a way of preventing or fixing this?
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