|
The FLYING BRAND TEST is performed when there is a possibility that the roof membrane will break into flaming particles which support combustion. The powerful gas flame and air current is applied for 10 minutes, then air only until clear.
The first photograph in the series which follows shows the BURNING BRAND TEST where 36 burning lumps of Douglas Fir are placed in a regular pattern on the Wrimco SBS previously torch applied to a timber frame. The "brands" are ignited and then held in place on the waterproofed membrane by the wires you see. Air is blown across until the "brands" are totally consumed by fire. |
