Should two different roofs on the same house have the same pitch?
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Answers:
Nope! In fact, a lot of times, it's prefered, if not mandatory to have different pitches. For example, a wing intersecting the main house will require a steeper pitch if the wing is narrower than the main structure and you want to maintain a constant ridgeline. And sometimes the "gable" end of a hip roof will be pitched steeper than the main roof for the purely esthetic purpose of creating a longer ridge.
If you're doing the framing yourself, just be aware that it's more challenging to calculate/cut the rafters and jacks for the hips/valleys of a dual-pitch roof versus a single-pitch, for the simple reason that the two pitches means the angles don't mirror each other. Roof cutters commonly refer to dual-pitch roofs as "bastard roofs", and with good reason. :-)
waaaac,
Yes, I think that a house would look odd with two (or more) roof pitches. I have seen a few houses with multiple roof lines (from the street) and the pitch of each roof matched the rest of them.
there is nothing written in stone that says they must have the same pitch. i just had an extra bedroom added on a 2 story hse. and changed the roof to miss an upstairs window. it looks fine. the front is the same, the back part of the roof changed.
Generally yes, but many older houses or houses w/ add-ons may have different pitch's. It's not really a problem.
not necessarily . certain gables on a Victorian may have a steeper pitch than the main roof
No, they do not have to have the same pitch, and in most cases, you do not notice the pitch unless there is a huge difference. Roofs are unique to each house, there is not a set standard to pitch. Also, nowadays there are so many roof choices. Check out www.gaf.com to see some great roofs. They are the largest roofing material supplier in the USA.
No !!
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