Georgian Wired Glass

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Aren't there 2 differing types of georgian wired glass, one that is inherently fire resistant and one style that is not, perhaps the glass and glazing federation can offer some advice.

Here we go...

There are at least 2 UK based wired glass producers, but as Pilkington have the dominant market share I'll focus purely on their products:

They market 4 types of wired glass-

Pyroshield clear
Pyroshield texture
Pyroshield safety clear
Pyroshield safety texture

The test data held by Pilkington offers 60 minute fire performance for all of these (Integrity only, no insulation.)

Further producers (such as me) take the product and then re-test it based on what we want to achieve in order that we are able to broaden our product offer, for example 120 & 240 minute performance have been proven - but that evidence is owned by the companies that paid for the test.

wee brian:

Nice one Brian!

Quote from: wee brian

Ron, you say the local glazing company said its not up to the current standard. Did they qualify that they were referring to fire resistance? Could it be that they were referring to standards in relation to part N of the Building Regulation (safety glass requirements).

At the time part N was introduced (in the 90s), the standard Georgian wired glass did not comply with the requirements in terms of safe breaking or robustness.  To comply with part N, manufactures changed their product. The change concerned the gauge of the wire within the glass, it had to be thicker to comply with the requirements of part N. so old Georgian wire glass has thin wires and does not comply with part N and modern Georgian wire glass has thicker wires and does comply.  Both old and new meet the requirements in terms of fire resistance (subject to its installation method)

Therefore, if this is the case, it may not be necessary to change the glazing. Or at least not for the purposes of fire safety!


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