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Sealed units are priced per Square meter. However there's usually a minium charge equivalent to 0.3sqm. 8x Toughened low-u units will eating the economic viability.
Beside the thickness of the unit, you'll also need to allow for some way of sealing the unit into the frame. Be that putty or dry glazing tape.
Is there enough height to the bead/rebates to hide the spacer bar and sealant around the edge of a sealed unit?
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Have you thought about the logistics of routing? What type of bit and what size? Follower bit or bushing? What angle to approach from? how easy that will be to keep square without removing the door? How close to the edges will you be able to get? How will you square up the corners?
These are all things that would paralyse me into inaction.
It’s something like that - looks like the inside beading is removable, exterior looks fixed. My plan was to take the panes out, and use a palm router to remove enough material from the front side (green hashes) that a thicker sealed unit could fit. Trying to figure if a) this is feasible and b) whether 8 x sealed units plus all the fitting, plus repainting, if it isn’t worth just replacing the whole door.
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