Hanging Heavy Mirror on 100yr old wall

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Old 12-09-09, 09:17 PM
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Hanging Heavy Mirror on 100yr old wall

What is the best way to hang a heavy decorative mirror in a 100yr old home. With the plaster and lath walls it is extreme difficult to find the studs. Which of the anchors on the market available would works best in this situation.

Thanks for your help.
 
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Old 12-10-09, 08:02 PM
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My truck is heavy. Just how heavy is your mirror, since it is subjective. It can possibly be hung using EZ Anchor devices sold at most hardware and big box stores.
 
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Old 12-11-09, 11:14 AM
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I am guessing 50 - 60 pds. I am a fan of the EZ anchors but not had success with them in plaster, While threading them into the plaster to much chipped away. I may not have drilled a large enough pilot hole.

Thanks for the input.
 
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Old 12-11-09, 02:19 PM
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Use several of the picture hangers that come with the thin sharp hardened nail.these are available under several brand names and for weights up to 100 lbs.By using two or three you distribute the weight making none of them carry very much of it.

Tap the nails in carefully and not with a heavy hand.Sometimes taking tape such as medical adhesive tape or electrical tape,making an X and nailing in the cross section of the X can lower the chances of serious cracking.

If you use a wall anchor use the plastic anchors that must be inserted into predrilled holes.Use a masonry drill bit and a VSR drill so you can go slow and minimize chipping.Do not use any sort of anchor that is driven in by screwing or hammering,those are only for drywall.Use several anchors for the same reasons as the hangers.The anchors will use screws to expand and as the hanging point.there is a specific hook used with these,sometimes comes packaged with them,that is a flat metal hook with a J shape and a hole in it for the screw,sometimes referred to as Molly Hooks or just as a dryall hook/hanger.
 
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Old 12-11-09, 04:07 PM
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While overkill for your project there is a device called a snap toggle. Here is a video that demonstrates how it works. Toggler Snaptoggle | Anchor Bolts,Toggle Bolt, Toggle Bolts
 
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Old 12-12-09, 11:03 AM
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Similarly, EZ Anchor makes EZ Toggle, as well. Very easy to use and will hold 90 lbs of vertical weight. Drill them slowly, and if you have wooden lath, you may have to predrill with a smaller bit so the fitting will sink into the plaster and lath combo.
 
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Old 12-12-09, 12:16 PM
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The industry standard safety factor for this is 4, but for personal safety it could go to 12 or more.
So for 3 fasteners holding up 100#, each of the three should not pull out with 4(100/3) = 133# static, vertically-downward load.
If the mirror hangs from a wire it should have at least a 30 degree angle from the horizontal, otherwise the tension in the wire becomes very large.
 
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