FIREFLYSpan is a sandwich of graphite intumescent and foam strips, sold in 1m lengths of various thickness.

Used as a control joint system to accommodate linear gaps of up to 100mm wide x infinite length.

Available in three sizes FIREFLYSpan 50 for movement of 25mm to 50mm, FIREFLYSpan 75 for movement of 35mm to 75mm and FIREFLYSpan 100 for movement of 51mm to 100mm.