J810 Thermal Barrier Foam Tape Strips Originally developed for use as a thermal barrier between steel ceiling battens fixed to steel truss chords for cathedral ceilings in steel framed housing, these convenient adhesive foam strips are suitable for a variety of applications where a thermal barrier is required. Pre-cut to size these strips come on a sheet of 16 pieces for quick and easy removal and are 30mm wide x 145mm long and 10mm thick.