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Installing onto aluminum/glass storefront


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We have a project on a storefront similar to the one below. We need to install a sign and awning over areas that the only place to attach to would be the aluminum mullions. Sign panel is light so I think Tek screws will be substantial. My concern is the awning. Since the mullions are hollow considering using toggles. Anyone run into a situation like this?

Storefront-glass-repair-3.jpg

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Yes we have through bolted some fairly heavy signs to mullion like that. Its scary though since there is not a lot of gap between glass and hitting the edge of safety glass means its all over. We drilled oversized holes on the inside first so we could see exactly where he glass was and the drilled out,

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We are working on one location currently that we will have a huge panel with LED channel letters attached to it over glass, we have to run the electric through the space occupied by the glass, so we removed the weather striping around the glass that holds it in the frame and replaced the glass with 10mm alu-panel. Storing the glass panel in the attic and upon the tenant leaving the glass can be reinstalled for a back to factory finish.

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  • Board Patron

here is one we installed last week. I would try and throughbolt or at least toggle into the the mullions for the sign. the awning you should be ok with teck screwing. make sure you are using coarse thread for teck screws in alum.

post-4376-0-18923400-1426860035.jpg

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  • !llumenati

We do these all the time here in NYC The columns are cast iron, You can drill and tap the columns and attach brackets and or bolts into them. 1/2 inch x 1 1/4 inch deep is enough. The cross beam is steel that sits on the columns. Look at the 5 bolts in the middle. they are attaached to the wood floor beams. You can drill thru the beam also for attachments.

Attaching to the window frames is a legal issue. They are not engineered for any attachments. You need to get an engineer to do the calculations and stamp it.

The storefront company, ( Like sign companies) want to install the job quick and easy. Not designing it to hold anything but the glass. Since you can not see the frame attachments into the building, you most assume that it is not strong enought to hold your install. Awnings and canopies move in the wind and get heavy with snow. Causing vibrations to the storefront. Guess who is responsible ?

Remember....Anything that happens to the storefront, falls, leaks, glass breakage, anything. You are responsible and everyone else walks away.

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  • !llumenati

Tim Hortons is attached to the "Structural" beams of the building. Completely different install and building construction. This should also be engineered, because shit rolls down hill to the last person who worked on the site.

Hudsons Sign is being attached to a building built in the 1880s to early teens. It has been renovated many times. The framed storefront was installed into the opening without any consideration for any weight on it. The frame is most likey wedged with wood to make it fit. It is basically a big replacement window attached quickly and as easy as possble to what ever will hold it.

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Paul brings up good points all around about that curtain wall and the comparison to the Tim H. letterset. That looks like Kawneer extrusion....very thin wall.

Granted, a LED letterset with a narrow raceway isn't all that much weight.

Still, get it engineered. CYA.

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By the way, glaziers slap those frames in, level them, and throw maybe 2 anchors on the bottom each lite (pane) and 2 on the top. This is usually a tapcon. They also use a polyurethane sealant/caulk. Vulkem is popular.... BUT they run up to a 1/2" bead. Besides possibly some foam and plastic shims used to level, that caulk bead and those few tapcons is what is actually holding that curtain wall in place.

Also, consider glass service..... if one of those lites is vandalized, or otherwise broken, how can a glass company replace it with your letter set spanning it? Unless you're in a high rise, most aluminum curtain wall systems' glass is set from the outside.

Edited by Joseph Licari
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