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Half-round windows : trying to source

 
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I'm looking for help in how to source a half-round window, like this: http://imgbox.com/8QtWVMZa (I'll try to embed the image below). The picture is from the excellent book on earthbag building: https://www.goodreads.com/book/show/1114278.Earthbag_Building.



So yeah, does anyone know where I can source windows like this? There a few models available at home depot but we're talking about ~$700USD a piece which just seems absurd. Also, in the book they reference "thermalcline" windows. In my current house we have double pain windows, but considering that in the book they're looking to use a simple sliced hose for a gasket (mortared into place), I can't imagine a multi-pain window is what they're talking about here.
 
pollinator
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Location: Kansas Zone 6a
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Do you have a habitat restore or other used building material store?

New they are expensive.  And are notorious for leaking because they are extremely challenging to install.  You can cut your own from acrylic, but they yellow and scratch.  Whatever you do, make the bucks so it is possible to replace the windows without breaking out big chunks of the building to do it.
 
Tony Hawkins
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R Scott wrote:Do you have a habitat restore or other used building material store?

New they are expensive.  And are notorious for leaking because they are extremely challenging to install.  You can cut your own from acrylic, but they yellow and scratch.  Whatever you do, make the bucks so it is possible to replace the windows without breaking out big chunks of the building to do it.



I live in a pretty remote area so no, nothing close by. I don't mind driving though since these are so critical. Would it even be that expensive for someone to cut the glass for me? Maybe I'm in the wrong business if glass cut to shape costs nearly a grand!
 
R Scott
pollinator
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EVERYTHING in the building industry is geared to square, level, and plumb. Not that most people get that right, either, but that is another story.

Any custom order window is $$$$$$$$$$$ these days.  If there is any way to adapt the plan to a standard size rectangular window, it will cut the window cost by about 80%.  

Oh, wait.  I just switched to a computer to see better.  Are those operating arches?  Like an old-school transom window?  If so, you will have to build your own or they will be LUDICROUS money.  You could adapt basement windows (around $100 each) or build your own from scratch.  You could use sun-lite fiberglass panel (looks like rice paper, cuts with a tin snips, more hail resistant than twin wall).  http://www.solar-components.com/SUN.HTM
 
pollinator
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ASSUMING you're building the whole window from scratch, then:

If the FRP panels are cheap and workable you could fab the window structure such that the "sash" would take glass, but you instead install the FRP and "think about" glass for a while... If you get lucky with as source or decide to splurge, install the glass into the sash you have originally made to take the glass. You would probably need to pad out and otherwise gasket the FRP creatively.

Cutting curves in glass isn't rocket science, but some people can and others would live better by not... It takes nice big flat work tables with decent light. My understanding is that glass cutters from the box store _might_ be good for one cut or so. There are "better" cutters available through the net. People making stained glass windows do a lot of odd cuts and enthusiast sites detail various types of tools if you want to take a stab at it yourself. I personally have had very mixed results, but I'm a little ham handed at times. ;<  If you have the basic shop space, maybe find some trash windows to practice on. However, unfortunately, I think old glass is much harder to get to break along your scribe properly. So it might be better to get a couple pieces of cheap stuff from the box store, study up, and give that at try.  Maybe you'll discover TalenT. <g>

Or maybe you can find a glassman locally.

This suggestion is pretty redneck because it assumes a few things:
- you can build an all purpose jam that will take various thicknesses of pane
- you'll start with cheap 1/16" glass to get the feel and install your successes  while you "think" about the next better type of glass
- you'll get richer and more talented down the road so you can benefit from your early planning...


https://tglass.com/
This is an old company that does glass. All kinds. Torstenson is a materials supplier; they work and deliver the material, but don't install. You may be able to learn more about what's available from them. As I recall, they do have "efficient" sales, and counter people so if you bend their ear, you want have your inquiries planned, lined up and ready to go. I've used them because they're about a mile down the road from my Chicago digs. The last time was about 10 years ago, so maybe their attitude toward little guys has changed, but there might be information to be had. Logistics are something else. I'm sure they're not the only such business in the USA, so one of the things you could ask them is "who does what you do near <where Tony is>"? Because they've been in business since forever, there's a chance somebody at Torstenson knows the "real" glass businesses around the country. Just might get lucky and catch the right person.  .  

Cheers,
Rufus
 
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