Wall mirrors make it possible to steal a glance at your appearance before you step out for the day or welcome guests into your home. But you may not notice how much you use a wall mirror until it is time to fix it. A mirror is worth fixing if it has value and its damage is minimal. Mirrors can become damaged in several ways--the silvering can develop spots, it may have been scratched or the glass may be chipped.
Repair black spots on the mirror and scratches in the mirror backing. The reaction between moisture in the air and the mirror silvering, old mirrors can develop black spots near the edges. Damage to mirror silvering can also be physical, such as a scrape across the back or peeling at the edges. When you have a damaged valuable mirror, restore it with a silver mirroring kit.
Wear rubber gloves and eye protection, and scrape or dissolve the mirror backing down to the glass.
Clean the glass using a lint-free cloth to remove any of the old silvering residues.
Apply the silver in a smooth layer over the glass.
Coat the silver layer, once it has set, with the copper layer.
Paint the back of the mirror with the mirror backing paint that protects the mirror silvering layers.
Refinish the edges of the mirror if they are chipped.
Scrape away any large, loose pieces of glass before sanding the edge.
Sand the edge with a wet diamond glass sanding pad or a glass sanding stone until the edge is smooth and rounded.
Wipe away the sanding residues from the glass to reveal its polished shine.
Frame the mirror with picture framing. This is an easy way to conceal chipped corners and edges on the mirror. A wide-enough frame also conceals black spots in the mirror silvering along the edges.
Measure the width and length of the mirror glass.
Make a frame. Mitre cut, at 45-degree angles, the framing for the width and length of the mirror. Wood glue and tack the ends together with finishing nails. Fit the glass in the frame's support and use frame tacks to secure it to the frame. Cover the back of the mirror with a frame backing.
Order a custom-made frame for your mirror, if you cannot make one. Give the framers the length and width measurements of the mirror, and select the type and style of frame you want for your mirror.
Be careful handling the glass, as it can easily break. Protect your work surface from glass chips--cover it with a disposable dropcloth.