September 28, 20215 yr I’m sourcing 3 flat roof lights for the ground floor of our self build extension. One of them is on a fire exit route from the first floor so have been informed by our architect that we need glazing for this window with a 30 minute fire safety rating. Does anyone have any recommended suppliers? It will be 2100 x 800 in size, fixed pane. many thanks in advance!
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