How to Vent a Bath Fan Through the Roof – This Old House

How to Vent a Bath Fan Through the Roof – This Old House

This Old House general contractor Tom Silva shows how to properly install a roof-mounted bath-fan vent. (See below for a shopping list and tools.) Click here…

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John Bravo says:

Very informative in regard to improper initial installation and proper
installation . However, they explained the problem of installing vent in a
vented soffit thus causing vapor to enter the vented soffit ,therefore
causing mold growth on the roof sheathing etc. Nothing was mentioned on
what they recommend for the removal of the mold that already started to
grow. Stopping the vapor penetration into the vented soffit doesn’t stop
the mold that already started to grow.

Huong Means says:

where to buy the roof bathroom vent hood. 

Hannylicious says:

Great video – helped me figure out how to do this for my first time. I was
very nervous – but this video made it very simple to understand and I had
the whole project tackled start to finish in no time!

steveu235 says:

what about in Canada where we get 3 feet of snow on the roof a low roof
vent like that would be covered with snow. How about using 3 or 4 inch abs
pipe with an elbow to keep the rain out?

crazy wheel says:

Thanks, 99% of the time you are right but I have been working in
construction for 20 years and sometimes I know a better and easier way, but
I can see that you know a lot

Pete Dragovich says:

Can you just use roof flashing tar in caulk gun form vs silicone? Great
video by the way!

Joe Maniaci says:

What if your soffits are not vented? Probably still recommended that I go
through the roof?

created2worshyp says:

Just bought a home this past April and I have a feeling the bathroom vents
as venting to the the attic will get to the attic as son ads I can to check
them and venta them this way thank you forma The vídeo as a new Hime owner
I appreciate them.

Arnold R says:

Can I also use this procedure to vent my range hood?

Jason C. says:

Should use all metal ducting.

jaxflfreebird says:

Very helpful video. I just had two vents installed for two bathrooms when I
got a new roof. It looks like the company put the vents in right. Yay!!

san379 . says:

bathroom soffit vents suck

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