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 I
am concerned about weight on my ultralight. What process should I
use?
>Get a copy of the Poly-Fiber manual and read
Appendix A. It tells you exactly how to cover your ultralight.
Poly-Fiber has a light weight fabric (1.7 ounces per square yard)
that should be used on an ultralight. The total weight, including
coatings, on an average ultralight will be about 20-23 pounds.
What
about protection from the UV rays of the sun?
>That is a good question. If your ultralight will
be outside for long periods of time the sun will definitely reduce
the life of the fabric. You must protect it from the sun. The best
way to do this is to use a silver pigment (Poly-Spray) to cover the
fabric. This will provide maximum protection. Many ultralight people
will leave the silver coats off and use a UV blocker in their color
coats. This is somewhat effective but not as much as silver.
What
about saving weight by not putting on the silver coats?
>You can do this by adding a UV blocker to
Poly-Tone color coats. This will provide a certain amount of
protection at less weight.
How
about using clear Aerothane to protect the fabric on my ultralight?
>Clear Aerothane will provide a certain amount of
protection from the UV rays of the sun. It is often used on all
types of ultralight fabric. One word of caution: If you use
Aerothane be sure to use a fresh air breathing source while
spraying.
What
are the steps to cover an ultralight?
>First of all, use 1.7 ounce fabric. Attach the
fabric using Poly-Tak cement. Tighten the fabric as directed in the
manual. You can then brush or spray on one coat of Poly-Brush to the
fabric. Then spray on 2 coats of Poly-Tone with a UV blocker added.
This is the very minimum you should do to fabric on an ultralight.
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