Use 3 inch wide double-sided seaming tape seam pieces of liner together for
waterfalls and streambeds; also sometimes used by itself in larger applications.
6 inch wide one side sticky seaming tape (100 foot roll) for patching and seaming liner. For the best seam, use both 3ā€¯ and 6ā€¯ tape together (called aredundant seam). Always use QuickPrime Plus when seaming.

SEAMING LINER

The
liner must be clean and dry in order to seam. Overlap approx. 6+ā€¯ of
the liner to be seamed. Scrub the area to be seamed with clean water or
white gasoline, cleaning both liner pieces past where the seam tape will
attach. Let dry. Place a
narrow strip of plywood under overlap for
support while seaming. Use scrub pad to evenly apply QuickPrime Plus
past where the tape will attach. Let dry to the point that it is tacky;
not dry, not wet to the point of stringing out when touched.
Apply 6ā€¯
wide single-sided tape to EPDM; (for large jobs, use 3ā€¯ double-sided
tape between overlapped EPDM first, then 6ā€¯ over the top). Press
together with a small silicone roller, pressing hard in all directions.
Warm seam in sun or with hair dryer.
Let bond 24 hours then fill.