Mirror Glue

 
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Old 01-07-2018, 02:17 PM   #1
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Mirror Glue


I want to hang an 80x32 frameless mirror with a french cleat or similar so it can float away from the wall 3/4" and have no visible clips.

Can anyone recommend a glue that I can trust to glue a 1x4 to the back of this mirror to support all its weight, and that won't mess up the mirror finish?
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Old 01-07-2018, 02:35 PM   #2
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Re: Mirror Glue


I have done this 3 times without any issues. I used a urethane type caulking. I can't say for sure if it will eat the silver over time but it is definitely a solid bond. All times I did it I glued a 5/4 PVC frame and let it lay flat and cure over night before hanging.

The client wanted the mirror edge all lit up. I built the PVC frame about 1" back from the edge and used led tape lighting adhered around the frame.

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Old 01-07-2018, 02:44 PM   #3
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Re: Mirror Glue


We played with the lighting idea too and then decided to keep it simpler. Can you tell me the specific caulking you use? Don't want to take any chances.
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Old 01-07-2018, 03:23 PM   #4
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Re: Mirror Glue


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Originally Posted by Golden view View Post
We played with the lighting idea too and then decided to keep it simpler. Can you tell me the specific caulking you use? Don't want to take any chances.
Oh boy...I think I used TiteBond weathermaster. Really was something I had in the van. Might have used NP1 for the first one. Sorry I am not 100% sure what it was. I just know I didn't use silicone because if you use the wrong silicone it can eat the silvering. I was nervous too but the first one I did has been up a few years now with zero issue.
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Old 01-07-2018, 04:18 PM   #5
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Re: Mirror Glue


why not just use mirror mastic from a glass supplier?

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Old 01-07-2018, 04:37 PM   #6
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Re: Mirror Glue


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why not just use mirror mastic from a glass supplier?

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Mirror mastic does not like heat, it will not hold the weight of the mirror. It will hold it against the wall but to up in the summer. Ask me how I know.


I would not use any type of glue, they have L clips and rail that are just about invisible. My glass guy just uses 1 at the bottom, over time any adhesive will eat through the silvering on the mirror except for mirror adhesive
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Old 01-07-2018, 04:58 PM   #7
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Re: Mirror Glue


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Mirror mastic does not like heat, it will not hold the weight of the mirror. It will hold it against the wall but to up in the summer. Ask me how I know.


I would not use any type of glue, they have L clips and rail that are just about invisible. My glass guy just uses 1 at the bottom, over time any adhesive will eat through the silvering on the mirror except for mirror adhesive
Yeah mirrors are too easy to remove when installed with mastic. But I guess not all adhesives will eat through the silvering, since mirror mastic exists...
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Old 01-07-2018, 05:10 PM   #8
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Re: Mirror Glue


PL makes a glass specific adhesive but not sure if it would affect the backing. I'd be inclined to just use silicone and give it enough time to set.
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Old 01-07-2018, 05:23 PM   #9
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Re: Mirror Glue


Seal-Bond.

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Old 01-07-2018, 06:43 PM   #10
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Re: Mirror Glue


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PL makes a glass specific adhesive but not sure if it would affect the backing. I'd be inclined to just use silicone and give it enough time to set.
no silicone, many have some sort of additive that will eat the silvering. Notice the ones that really smell? Again, ask me how I know.

Just ask any glass guy who has been in business a while and they will tell you what to do. Mine uses the L bracket.

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Old 01-07-2018, 11:14 PM   #11
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Re: Mirror Glue


Many moons ago, I used 'proper' mirror adhesive to glue a hunk of ply to the back of a smallish (2x3) mirror. That got hung with eyelets and wire.

Until it came crashing down a few years later. Happily, it was my own place.

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