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Reinforcing Stained Glass Windows

Reinforcement is necessary on larger windows. As a rule of thumb, a window more than three square feet should be reinforced. Either reinforcing bar or rod may be used for support. Be sure to consider this when designing the window so that the reinforcement does not intrude or compromise the design of the finished work. In either case the reinforcement is soldered to the back of the panel in one of two ways. The bar should be pre-tinned before use. You will solder the bar in several places at intersecting lines on the window. Rough the areas to be soldered on the bar with steel wool. Apply flux and coat the areas with solder. Doing this will make soldering the bar to the window much easier. Place the bar on edge and solder to the window in the predetermined areas.

When using rod, a length of pre-tinned wire is first soldered at several intersecting lines on the window where the rod will sit. The rod rests on the wire which is twisted around it. Apply a bit of solder to the twisted wire. Solder either end of the rod (or bar) to the edge came. In some cases the rod or bar extends on either side of the panel and is “buried” in the wood casing of the window to provide optimum security. The casing is notched where the bar will fit and filled over to disguise it.

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Chandra Agostini

Thursday, July 30, 2015
Delphi Expert
153 Posts
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@kjcarfieldIt should be sufficent if you are running the rebar from horizontally from one side to the other.

Jennifer Bonesteel

Thursday, July 30, 2015
Delphi Expert
188 Posts
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@niemanla one piece of rebar through the center should be sufficient to support your piece.

niemanla

Thursday, July 2, 2015
1 Post

I'm working on a 27" radius half circle panel that will go on the inside of a window flat against the glass. (I can send you a picture of panel pattern in the actual window) The panel will have 3/8" U zinc along the bottom, and 1/8" zinc capping along the circle outer edge. Will a single 1/8" x 1/4" tinned steel rebar placed vertically up the center of the panel be sufficient? I plan to attached the rebar on the front side so the panel can rest flat against the window glass.

kjcarfield

Tuesday, June 30, 2015
2 Posts

I have finished a semi circle copper foiled project with 225 pieces measuring 64 in X 32 (approx. 11 sq ft). I have framed it with 1/2" U zinc came. I was planning on reinforcing the project using 1/8" steel rebar and 1/3 intervals vertically. Will my project be sufficiently reinforced?

Jennifer Bonesteel

Tuesday, January 27, 2015
Delphi Expert
188 Posts
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@Rzwerdling ideally you would use three pieces of rebar - one in the center and two more - one between the center and the top, the other between the center and the bottom.

Rzwerdling

Monday, January 12, 2015
2 Posts

Currently working on a large round Start of David. it will be about 4 diameter round (Came on perimeter and copper foil on interior What is best way to hang/ reinforce it? might be about 30 lbs? Thank you Ron Z

Jennifer Bonesteel

Tuesday, February 25, 2014
Delphi Expert
188 Posts
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@Retired Plumber we would suggest one piece of rebar running horizontally on the 14.5" x 59.5" piece and three pieces, two vertically and one horizontally on the 12" x 81.5" piece.

lindaredwine2509150344

Friday, April 12, 2013
1 Post

I am making a 22" x 10" panel for outside wall, but the window has an overhang and is inset so has limited weather exposure. Is it okay to use foil technique?

Chandra Agostini

Wednesday, January 23, 2013
Delphi Expert
153 Posts
Top Contributor Gallery Artist

@Tina/Larry It is recommended that you cement first, but bear in mind that you will need to wash with flux remover again after tacking/soldering the reinforcing strip in place in order to prevent any acid flux from sitting on or near the lead/solder joints.

Tina/Larry

Monday, August 27, 2012
1 Post

When using a steel reinforcing bar, do you cement first or after the bar is soldered?