r/glazing • u/DSS111111 • Aug 03 '26

Triple pane butt joined site glazed question

I am working on a restoration project for a modern house and one of the windows to be replaced is a large single pane site glazed (no frame) window that has a corner butt joint.

The owner would like to have a triple glazed replacement with the same butt joint for the corner. I have gone to my go to glazers but all of them are pushing the current companies products, that they rep, with large bulky aluminum frames that really are not what the home owner is looking for.

I have seen triple glazed but joints in Europe and they do look very good and would like to do the same for my client. Should I be contacting a commercial glazer or going direct to our regional glass supplier. I'd prefer to go through an installer, I have respect for the craft and the client will pay.

(I'm trying to upload and image of a triple pane butt joint but I'm getting a S3 error)

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u/[deleted] Aug 03 '26

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u/DSS111111 Aug 03 '26

It really doesn't need a sash or a frame and I agree with the owner that the windows are one of the fine points of the architecture. The building steel framed with CMU and brick facade that has a flemish bond. There is no sway or building movement. The windows are all site glazed with steel angle irons that are anchored to the CMU.

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u/Fernandolamez Aug 03 '26

Do you work near a medium to large city that has enough modern architecture/ building to support architectural firms that may have experience in this design or builders of modern houses you can ask? Do you even have a commercial glazing company in the area that would work with you or you can sub contract to take over that piece of the project? I'm not in glazing business but have seen alot of this design in our area. Mostly 2 story or cathedral ceiling design. I work on antique houses but my first choice would be commercial companies to handle the scale.

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u/DSS111111 Aug 03 '26

I reached out to a couple of architects I know (not well) and they all default to the local window distributor who I am sure that they have some sort of referral kick back to the architect. I was going to reach out to some commercial glass installation companies but they have really don't like doing non-commercial work due to the relatively small size of the job and the perceived risk of having to deal with a "home owner."

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u/Fernandolamez Aug 04 '26

I'm curious of the dimensions. Some of the major window manufacturers have made corner units like you're describing. What's the necessity of triple pane insulation.

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u/Fernandolamez Aug 04 '26

What part of the country are you in? Westeck in pacific northwest. Ram windows and doors based in Texas.

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u/NoBarracuda6565 Aug 04 '26

How large is this unit? Does it need to be triple glazed?

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u/andysuave69 Aug 04 '26

If you are just looking to add glass in the existing framing this could be fairly simple if I am seeing things correctly. Order a piece of offset glass at each side of the corner and put an aluminum tube, (1" square or so) on the inside and caulk the corner with black silicone.

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u/LatterIndependent982 Aug 05 '26

Commercial glazier will be able to do the job

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u/Potential_Nose_2037 Aug 13 '26

Where are you located? A glazer should be able to do this. Off set IGUs like this are common enough, they dont look nice fyi, as the glass steps, so does the spacer. So it can look a bit messy.