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What is this kind of roof called?

 
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Flipping through books called things like “beautiful porches for all home!” I think this came out of “waterfalls and fountains for your yard”

I love the roof on this gazebo! Would like to learn how they made it, don’t have a clue what it’s called, obviously not any of the words I have tried.
Anyone know what this roof type is called?

:D
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Wild

Never seen one like that. The underlying roof is a square hipped roof built on four faces of the hexagon with the area over the doors clipped and gabled. Zero clue how they did the textured shingling.
 
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Pearl -

Is this a pergola?  That is, there is no roof deck, just the beams?  If it's not a pergola, I am stymied as to how the top chord of the rafters (or whatever that is that's visible) can be contoured like they are.  I guess they could be a bunch of cockscombs, extending up above the roof deck, but that seems very improbable.

This general plan (though not the sculptural rafter top chord business) reminds me a bit of a Rhenish helm roof, except that yours is on a hexagonal floor plan, whereas the Rhenish helm is on a square floor plan.  But, if two of the opposite gable edges (barges?) of the Rhenish helm roof were extended down to plate level, and the roof planes were all trimmed back to plate level, then it would be somewhat similar to what I imagine your example looks like "in the round".

https://en.wikipedia.org/wiki/Rhenish_helm

That's really as close as I can get, though.

It does remind me just a bit of some of the roofs in "Storybook Style":
https://www.amazon.com/Storybook-Style-Americas-Whimsical-Homes/dp/076435308X

Sorry I can't be more help.  Maybe the Rhenish helm reference will trigger an "aha!" in someone else, though.

Kevin
 
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Unless that is a pergola so it is only rafters and not a rain shedding roof. I can visualize that in my mind, not sure I can explain but will try.

It is built like a gabled roof, all the rafters parallel, except the ridge is not straight-it is an inverted V since the rafters get longer in the middle. The tops of the rafters get that curve cut in them.
 
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This is a curly one (sorry about the pun).  I think the outer roofing is all made from corrugated iron/steel.  Using the supports with the holes in the end placed vertically (some other support under them?)  The shingles then cut in wide "S" shapes and slightly curved.  Might be the sort of metal that will rust so far and no further - specially made to do that.
Whatever the construction, it's fascinating
 
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I think that it is a painting or drawing.  When I enlarged it, there were brush strokes visible.  These type of complex rooves are often light weight cement constructions using cement coated fabric over a sand sculpted form.  Similar to how large pots are made.
 
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From what I can tell in the photo (and I am 99.99% sure it's a photo, not a drawing), R Scott is right on about the roof structure.

It does resemble a pergola more than a gazebo, but if it is a gazebo--that is, if there is roof decking--I'd guess the decking pieces are simply secured between the rafters (perhaps with hangers/gussets) instead of on top of them. If you were to walk a sixth of the way around the outside of the structure and take another photo, you might see the decking (and whatever type of sheathing/shingles is on top of them).
 
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Are we *sure* it's real and not AI?
 
Kevin Olson
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Paul Fookes wrote:When I enlarged it, there were brush strokes visible.



If the brush strokes were on areas of wooden construction, the brush strokes you found when analyzing the image could in fact be due to applying stain or finish on the wood itself, which might then be visible in a photo.

Not saying that's the case, just offering a possibility which could be both a photo and have brush strokes.  Kind of like a print of "Whistler's Mother", or something (apologies to Rowan Atkinson).

I hadn't even considered that it might be a painting, but now I'll include that option, as well.
 
Kevin Olson
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R Scott wrote:It is built like a gabled roof, all the rafters parallel, except the ridge is not straight-it is an inverted V since the rafters get longer in the middle. The tops of the rafters get that curve cut in them.



Yup, that seems most likely to me.

Somebody liked doing rafter layout.  Or has a good rafter square.  Or both.

Somewhere around, I have a scan of an old roof framing book.  This is for stick framing, but for all sort of "irregular" roof structures, and at the transition from heavy timber or mill framing to more modern methods using commodity dimensioned lumber.  I'm fairly sure I downloaded it from Archive.

It was pretty common in cities or other congested areas to need to maximize the use of available ground space (even if the lot was trapezoidal or triangular or some other shape), or to build roofs to protect process machinery, or for all sorts of other reasons, which resulted in funky roofs for entirely practical considerations.  This book told how to lay them out.  I suspect it would offer some help if you wished to replicate the roof in the photo.  I'll see what I can find in the digital pile of stuff.

On edit -
"Light and Heavy Timber Framing Made Easy" by Hodgson:
https://archive.org/details/light_and_heavy_timber_framing_made_easy_1909

"Cassell's Carpentry and Joinery", edited by Hasluck:
https://archive.org/details/cassellscarpentr00hasl_0/page/n11/mode/2up

Of the stuff on my portable hard drive, these are the most relevant to funky roof framing (and more!).
 
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The upper swirled layer seems lower resolutiom than the rest of the image.  I think it is a composite or AI image.
 
Paul Fookes
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Since my initial post, I have searched various sites using different metrics.  All to no avail.
I am sure it is a painting.  See image enlargement

This type of structure can be made from material soaked in cement and set over sand or wooden mould.  I think that modelling or sculpture sand would be easier for most people.
 
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Pergola is not a roof type.  I would call that a hip roof.
 
Pearl Sutton
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R Scott wrote:Unless that is a pergola so it is only rafters and not a rain shedding roof. I can visualize that in my mind, not sure I can explain but will try.

It is built like a gabled roof, all the rafters parallel, except the ridge is not straight-it is an inverted V since the rafters get longer in the middle. The tops of the rafters get that curve cut in them.


That is one of my main guesses too. I'd love to see it in the round to find out. All I  have is that one photo out of one book.
And it fascinates me.
 
Jay Angler
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Pearl Sutton wrote: I'd love to see it in the round to find out. All I  have is that one photo out of one book.
And it fascinates me.


So even if it was a photo from someone's painting, or genuinely built somewhere, sometime, figuring out how they did it will mean you can be the first to actually build it!

One of my thoughts is that the rafters seem out of scale for a typical roof. Are they 1" by 6 or 8 " or if actually 2" thick, they'd need to be quite wide.

If it's not actually a solid roof, could it be that they took 1x10's and cut that wavy shape individually on each one? They'd support them with the spacers you can see, which would provide shade underneath, but no waterproofing.
 
Pearl Sutton
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Looking closer at the pic (which is a photo taken by my phone out of a Sunset book copyright 1989. Not painting, not AI. ) I'm thinking the curved top rafters like R Scott said, covered with long top to bottom shingles that curve to match the rafters and are shaped on the edges of each shingle. The multiple curves and the colors of the shingles are making the visual effect that makes it look so exotic.
REALLY neat effect!!
I'll have to think on that one...
I don't have time to do it but I bet at this point I could make a paper mock up of it.

COOL EFFECT!!
 
Pearl Sutton
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I'd love to just see that place.
Looking at the pic more (I can see it clearer blown up on the computer than I did on the page) I had failed to notice it's not a symmetrical hexagon, very elongated. Which actually would make that roof easier to do.

These books don't identify locations of pictures. At the front they credit some photographers, this one is credited to Tom Wyatt.
Cheap books of this sort are all over thrift stores, I pick some up just for flipping through for the rare really neat idea.
 
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Some cameras, when the photos are enlarged, make the photos look like paintings. It could be that whatever was used to take the picture of the book, did as such.
 
Pearl Sutton
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If someone has time to dig through images (which I don't today) check the old northern European and Russian wooden churches... The more I think on this the more I think I've seen something similar, and I DID rabbthole into those years ago.
Look for long shingles cut into shapes, and multiple curves on the roof, not just domes.
 
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That's an interesting roof for sure.  My initial thought was that it's at pergola with open trusses.  The trusses are made from 2x12s or something overly wide and the shapes are cut into the top of them.  

I don't see any roofing material over top of the trusses.

But, they are very weathered.  And the underside of them is very unweathered.  Which makes me think there is a roof in there somewhere.  

I'm also confused that the remaining meat of the front rafters is, maybe 5" wide.  Then looking at the underside in the back half, it seems like at least 5" of truss is showing and you don't see the cutouts.

Maybe the front half is a pergola and the back half is a more boring roof with rafters under it?  It might not even be decorative on top.  That would protect the benches, the lighting and keep the trusses looking nice.  Otherwise I just don't see how a roof would fit between the trusses and not be visible underneath in the back.  
 
Pearl Sutton
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Utterly randomly.. making a phone call, another of these books sitting there I looked down and said “ooooh! The chair and stone colors match that roof!! They would look lovely under it!!”
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Pearl,

I think you might have to be a pioneer and come up with a name for this yourself!

Maybe "Wavy Top Pergola" or "How-in-the... roof".
 
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I thought maybe it was a work by a famous artist or something so I used google lens on the image and the only thing close it comes up with is on this page.

https://www.deckbuildersofnc.com/

I'm not sure it has a roof in this example.  It seems to be just fun shape rafters, like the kind of roof we grow grapevines on.
Wavy-roof-clue-.jpg
Wavy roof clue?
Wavy roof clue?
 
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R Ranson -

Yup, that does seem to be it:


I'm still not quite sure about the roof deck, or lack thereof.

That Lens doohickey worked better than my image search method.

Nicely, done!

Kevin
 
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I'm off to find out what a roof deck is.  Is that related to the triangles on a house roof?
 
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As one of those people who are very happy to use roofs but wants nothing to do with making or maintaining....to the point, I had to get a neighbor to translate when I needed to buy roof triangles...

Roof deck seems to be the layer under the roof but above the rafters.  Like the plywood we put on top of the triangles, before the metal went on.

If this is right, it looks like that roof has neither deck nor top layer. It's just triangles but without the bottom "leg?" of the triangle.  
 
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In my world, I call it grape roof.

Like attached, only the one we are looking at has waves cut in the rafter bit (is rafter the word for upright diagonal of roof triangle?)

At least that's my theory
Roof-without-top-for-grapes.jpg
Roof without top for grapes
Roof without top for grapes
 
Pearl Sutton
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I think you are right R Ranson.
I also think though, that having thought on it too much, I could put a cool shingle pattern on it.

I think the concept will stay in my brain and my notes. Some things I toss, this concept is a keeper.
 
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That sounds great.  I can't figure out in my head how it could work, but I imagine with enough popsicle sticks we could get to a working model.   Sounds like a project for a poor weather day.
 
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With cardboard and paper I could make one.
and time. Which is not on the agenda right now.
 
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Pearl Sutton wrote:I also think though, that having thought on it too much, I could put a cool shingle pattern on it.



You might check out the "Storybook Style" book link I posted, or do a web image search for "seawave", "cedar" and "shingle".  Basically, there was an interest in certain quarters, following somewhat on the heels of the Arts and Crafts movement, to have roofs which were "imperfect" - swaybacked ridges, shingled and swept (rather than flashed) valleys - or shingled forms which mimicked the shape of thatched roofs, or were otherwise "picturesque" or appeared to be slightly ramshackle or "olde timey".

This sort of thing reminds me of Christopher Alexander's deliberately squeaky wooden stairs - imperfect, but charming, conveying a sense of age (even when new) and feels like home.

On edit - here's a link to a YT tour of one of the houses featured in that book:
 
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Well found R.  I think that it is an open rafter style with an offsett curve.  It would be easy to create by marking the curve on a template and moving it 1/4 to 1/2 wave to create the pattern.  A bird mouth on the underside would stabilise it on the top plate.  The knob on the top of Pearl's photo may be an additional part.
 
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The roof appears to be built entirely of beams.  A good carpenter with a bandsaw can mill those.
 
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