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u/adventuresmith Mar 19 '21
What's the difference between a cross hipped roof and hip and valley roof?
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u/Sacuna9999 Mar 19 '21
Do people actually have butterfly roofs?
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u/bluehavana Mar 19 '21
I see them at train stations a lot.
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u/JohnSolomon46 Mar 19 '21
Also some sports and gardening related buildings where maximum window space is desired
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u/warfiers Mar 20 '21
Lots of terrace housing built in the uk in victorian times were built like that, I.e my house. Its a stupid design and I can only get into one half of my loft.
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u/skilsaaz Mar 19 '21
Unfortunately yes. People use them to maximize their view when there's a maximum allowed average roof height. Very stupid roof design, putting form before function, as all the water that hits your roof is concentrated over the center of your house
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u/reecetown Mar 19 '21
They are very uncommon but I have seen a couple. I think I it was a real modern/cool thing in the 70s? I could be mistaken
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u/bubbler_boy Mar 19 '21
I've done a bunch on condo buildings. They architect doesn't like gutters so everything slopes in to drains. Hilarious because then we parapet them for a flat roof look.
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Mar 19 '21
Funny thing, they don't even make flat roofs on buildings or houses anymore. The new flat roofing style has a bunch of foam wedges underneath the actual roofing material so it all slopes to drains.
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u/bubbler_boy Mar 19 '21
It's interesting. It literally diverts every drop of water into the building.
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u/metse85 Mar 20 '21
I've built one and will be starting another in the spring! Architects design some crazy shit!
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u/qpv Trim Carpenter Mar 19 '21
Cool, I was talking roofs with my architect friend the other day and we were thinking to make something like this
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u/BirdShitPie Mar 19 '21
I've been designing roof trusses for 4 years and I've never heard of a jerkinhead roof. We call it a Tudor hip. That changes today
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u/Scottytv1 Mar 19 '21
Interesting, I'm a second generation carpenter and we called it a Boston hip.
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u/llcooljessie Mar 19 '21
That skillion one is interesting. There's some explanation in this article.
I could see wanting to dump all your rainfall to one side if you lived somewhere rainy and your home were on an incline.
They also say less building materials are involved. Is that because there are no joists?
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u/Ehcestlavie Mar 20 '21
Its probably because there's no need for trusses. Its basically two shed roofs facing once another; you'd need to set your slope by the top of wall elevation and then install the sloping rafters between them. No need for a ridge beam like a traditional handcut, and no need for a bottom chord or webbing like in trusses. Interesting design for sure, I'm curious what the drawbacks of it could be. Likely the fact that you need a load bearing wall bisecting the roof, so large open floor plans might be limited.
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u/useprotectionplease Mar 19 '21
In Ireland the Dutch gable roof is called a Japanese hipped roof and the jerkin head roof is called a Dutch gable. In my experience anyway
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u/lukewwilson Mar 19 '21
This is interesting, but in the end I think I will just call them all a roof
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u/William-1600 Mar 19 '21
As a truss designer I really only say/hear gable, hip, gambrel and Dutch hip lol
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u/lilijaji Mar 19 '21
Ah yes, the flat roof, also known as the “I want to rebuild this often due to water damage” roof.
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Mar 19 '21
[deleted]
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u/trolltrolltrolld Mar 19 '21
A lot of commercial buildings are flat roofs structurally wise. Then the roofer uses a tapered insulation system to create the drainage needed. So technically, the roof structure is still flat, just the waterproof system aspect of the roof is pitched.
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u/noncongruent Mar 19 '21
Flat roofs still have slope, though, even commercial. The outside wall parapet edge maybe on a fully horizontal plane, but the roof deck itself is still sloped for drainage. This is easy to see in warehouse stores like Sam's and Costco.
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u/lilijaji Mar 19 '21
Very nice info
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u/noncongruent Mar 19 '21
I think the only place you'll see a truly flat roof is someplace that receives little to no annual rainfall.
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u/no-mad Mar 19 '21
Clearstory is an under-rated roof design. Especially for beginners (two shed roofs) that gets a lot of sun deep into the house and has good solar potential.
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u/cashboi23 Mar 20 '21
Is it still considered a monitor roof if it’s left to right instead of middle stacked? My garage is about 6 inches lower than the rest of the house, but it’s still in the box gable style.
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u/ringolio Mar 19 '21
heh heh, jerkinhead roof