Strength on Mirror Frame

[MerpsMom]

Feeling a little like a newbie sometimes. Client wants a 22 x 48 mirror, minimal framing, would like metal about 1/2" wide. I don't use metals much anymore at all and also I said not strong enough. She's coming to look at wood modern chromish finishes tomorrow. Am I wrong about narrow metal mouldings on that heavy a mirror. Would scare me and I'm warning her off but don't want to be wrong.

Cathie

 

[cvm]

You could use a deep rabbet metal and go: mirror + mastic + strainer bar + z-bar.

 

[CHolt]

Question - How much does a mirror weigh?

Specifically, a mirror that is 16 inches x 60 inches. Is there a handy-dandy rule of thumb for this sort of thing?

www.thegrumble.com

I would think that a 1" wide aluminum frame would be sturdier than a 1" wide wood frame. For an extra measure use some thread locker, like Lock Tite, on the set screws.

 

[MerpsMom]

That's interesting. I know I triangle the corners on a wood frame with either mending plates or actual 1/4" wood triangles. Thanx for the answer.

 

[David Hewitt]

If you were to adhere the mirror to 1/2 or better plywood, then use Z-Bars as a hanging system. ( Or 4 hole large D-Rings )
Using wood will absorb the forces, then you can use any light weight frame because it bears none of the weight. Be careful with screw depth, or the mirror will break. I prefer to install mounts to the wood first, countersink the screw holes, and use counter sunk screws with nuts, now adhere mirror to the mount board.