Expanding Foam Tape 11-25EXP6 11-25 will provide a weather seal to 600Pa for gaps that vary between 11 and 25mm.
If left uncompressed EXP 6 Expanding Foam Tape 11-25 will expand up to 60mm, if you were to let it expand this much it would not create a weatherseal but you may find it useful for gap filling.
Weather Seals Gaps Between : 11 and 25mm
Gap Fills (not weather seal): 60mm Max
Expanding Foam Tape (compriband alternative)5 stars - "I'm really impressed with both the tape and service, I needed 40 rolls on site the next morning, these guys delivered exactly when they said they would and even honoured the full box discount price, I certainly know where I'll be buying my Velfac tape from now on!" Mr G Dempsey