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Question DetailsAsked on 8/23/2016

How much would it cost to terminate the bathroom vent to the exterior of the home?

My house is not brick, it should be a a fairly easy job, cut a hole in the roof which is only 4-5 feet away from the vent and BOOM! Install the vent.

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1 Answer


A Heating and A/C contractor can typically do this for about $250-400 - assuming normal shingle roof. Handyman maybe $100 or so less - though unless you have one you KNOW is skilled and conscientious you will not know how good a job you are really getting. Another $100 -200 or so in metal, flat or slate roofs. If flat roof I would definitely recommend having a Roofer do the roof vent hood installation with a piece of appropriate sized duct stickdown for the HVAC contractor or handyman to tie into - because a poor sealing job on a flat roof hood and you can get a real problem - plus on a flat roof should be a different type of vent fitting - high-curbed or vertical exhaust ducting with hood.

When having it done, if in a cold area (true winters) I STRONGLY recommned paying the extra $50 or so to have the ducting insulated (so you don't get condensation dripping down fro the ducting into the fan and bathroom), and have them caulk around the fan housing at the ceiling as well so moist bathroom air does not go up into the attic and condense and mold there. And make sure they are using seam sealer on the ducting joints to prevent drips of condensate getting into the wetting the insulation. Takes little extra time to do the job right.

Answered 3 years ago by LCD

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