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Frequently Asked Questions
What happens at an untreated edge?
Two problems, one safety and one durability.
A raw cut edge is sharp and chips.
And it exposes the silvering in section.
To humid air, continuously.
Which blackens the perimeter over time.
What is the difference between polished and bevelled?
How much glass is removed, and why.
Polished is smoothed flat and made safe.
Bevelled is ground back at an angle.
Over ten to twenty millimetres.
One is functional, the other also decorative.
Does edge working seal it?
No, and this is the common assumption.
Polishing removes the raw edge.
It does not protect the coating.
Sealing is a separate specification.
Ask about the backing, not just the edge.
What backing suits a bathroom?
One specified for damp conditions.
With an edge sealant to match.
Safety-backed film does two jobs.
Holding broken glass together.
And protecting the coating behind.
Why is fixing harder without a frame?
Because there is nothing to fix through.
Only clips on the glass edge.
Concealed brackets bonded to the back.
Or adhesive carrying everything.
Each has less margin than a frame.
Is adhesive alone acceptable?
Not above a modest size.
A large mirror over a basin.
In a warm humid room.
Is where adhesive failures happen.
Insist on a mechanical fixing as well.
Does it need a gap behind?
It benefits from one, yes.
Bonded flat to a wall it traps moisture.
Against its own backing.
Which is where the coating is vulnerable.
Brackets that hold it clear help.