I've never used the type of tape you describe, but it's my understanding that the binding filaments used don't go clear with epoxy (they're only disolved if you're using polyesther resin). You should consider buying plain cloth tape. I used 3" wide tape for my interior seams. For the external seams, I cut bias strips from the cloth I used on the rest of the boat. Check with Raka or Defender for inexpensive cloth tape.

> The taping of the interior seams of my Guillemot Expedition Single is on
> the horizon and I have a question about a product I found at my local
> fiberglass supplier (Fiberlay, Seattle, WA, www.fiberlay.com) It is
> bidirectional tape stitchbonded to a chopped strand mat. It is available
> in various widths from 4" to 50". Product # 155170850 - DBM
> 17:08.

> My question is this. Is this a good answer to the needs of this task?
> Strength from bidirectional tape. No need to cut my own and have irregular
> unravelling edges. Can I use one single layer of tape on the inside? How
> wide? 4"? Two layers of different widths? Cut my own tape from the
> remnants of the deck/hull cloth? Will it be sufficiently transparent and
> otherwise smooth and fair for the exterior seams? The chopped strand
> backing seems to give the tape considerable bulk. The 17:08 reference
> means 17 oz/sq.yd. roving with 0.75 oz/sq.ft. CS mat on back. They claim
> the backing results in more efficient use of the resin due to fewer voids
> between fibers where resin can pool.

> Thanks in advance.

> Ed