0

I'm replacing a bathroom ceiling fan, and need to add a short extension (approximately 18") to the length of the existing vent hose. The existing hose is 4" aluminum flex.

I have a couple questions. First, would it be acceptable to use the softer foil flex for the extension? The added flexibility would be nice during installation, and since it is a fan vent and not a dryer vent I assume the fire risk isn't an issue.

Secondly, what's the best way to attach and seal the connection? Screws, tape, hose clamp, etc? Ideally it would be something that I could install in tight quarters to avoid having to open another section of drywall--although I'd definetely prefer a good connection over the installation convenience.

1 Answer 1

2

You would use a coupling tape and hose clamps. You use thin flex aluminum duct like shown in picture but I like to stick with the semi rigid flex duct. Zip ties can be used on thin stuff but not semi rigid.

enter image description here

1
  • Cool, I haven't seen those before
    – STW
    Mar 10, 2014 at 14:46

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

Not the answer you're looking for? Browse other questions tagged or ask your own question.