I did a window today that had a strange "scratch" on it. I've seen defects like this before. Almost certainly a manufacturing defect.
Imagine a typical grouping of scratches caused by a hunk of mortar being rubbed across the glass or whatever. Now imagine that scratch with a dark, metallic look to it. That's what this looks like. I've never really bothered to try to identify the cause of scratches like these, but the superintendent on this job was wondering how it could happen and i realized i didn't have an informed answer to give him.
so what's your best theory as to how these types of scratches occur? my best guess is it has something to do with the tin/float phase of the manufacturing process, since the scratch group definitely has a metallic hue to it.
also, this is NOT tempered glass. And it's not an IG unit. its just a basic piece of annealed, single pane glass.IMG_0444.jpg
IMG_0445.jpg
IMG_0441.jpg
Imagine a typical grouping of scratches caused by a hunk of mortar being rubbed across the glass or whatever. Now imagine that scratch with a dark, metallic look to it. That's what this looks like. I've never really bothered to try to identify the cause of scratches like these, but the superintendent on this job was wondering how it could happen and i realized i didn't have an informed answer to give him.
so what's your best theory as to how these types of scratches occur? my best guess is it has something to do with the tin/float phase of the manufacturing process, since the scratch group definitely has a metallic hue to it.
also, this is NOT tempered glass. And it's not an IG unit. its just a basic piece of annealed, single pane glass.IMG_0444.jpg
IMG_0445.jpg
IMG_0441.jpg
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