Barrier Tape

About Barrier Tape

When using dissimilar materials in roofing and cladding it is necessary to use barrier tape to prevent galvanic corrosion or electrolytic reaction.

Barrier tape should be applied to the supporting structure before the sheets are fixed and should have a thickness of at least 0.12mm.

Most barrier tapes are self adhesive and to ensure good adhesion it may be necessary to dry the purlin flanges.

See also Ag Panel Color

Barrier Tape General Information

The tape should be approximately 10mm wider than the flange so as to overlap each side by some 5mm and should be overlapped at joints to ensure continuity of protection.

https://www.cladco.co.uk/how-install-your-roofing-sheets

http://www.fao.org/3/s1250e/S1250E0l.htm

https://www.nationalboard.org/Index.aspx?pageID=184

https://en.wikipedia.org/wiki/Metal_fabrication

See also Inside Corner Trim