Frequently Asked Question

Can I add to my existing ventilation system?
Last Updated 10 years ago

Yes, it's okay to add ventilation to your existing system.  However, only add the SAME TYPE OF EXHAUST ventilation as your home currently has installed - do not mix exhaust products on the same common attic space.  If Whirlybirds® exists, add Whirlybirds®, if roof louvers exist, add roof louvers.  

Keep in mind you want to install all exhaust ventilation at the SAME HEIGHT within a common attic area.  

Also, do not overlook the intake part of the system. A BALANCED SYSTEM must have 50% exhaust and 50% intake.  If you add exhaust ventilation, make sure you have at least 50% of the ventilation located in the soffit. 

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