On Thursday 21 February 2013 13:25 wrote in
alt.home.repair:

I'm getting a new roof which of course has lead into
the age old discussion of how best to vent it. I've
got 2 contractors saying ridge only is best, the other
insisting that power fans are superior. Personally, I
can see advantages and disadvantages to both. I'm
interested in other experiences and opinions.

Passive venting beats active.

Reason?

Power venting might be "better". Until it goes wrong and stops working.

How many houses have you been into where the bathroom/showerroom fan has
died? Even less people are going to care to mend a building structure fan.
Until something goes rotten...

--
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