Regal 3300 Owner's Manual page 230

CHAPTER 7
Sunbrella Cleaning Instructions
Sunbrella should be cleaned regularly before substances such as dirt,
roof particles, etc., are allowed to accumulate on and become embedded
in the fabric. The fabric can be cleaned without being removed from
the boat. Simply brush off any loose dirt, hose down, and clean with
a mild solution of natural soap in lukewarm water. Rinse thoroughly
to remove soap. DO NOT USE DETERGENTS! Allow to air dry.
For heavily soiled fabric, remove the top from the frame.
Soak the fabric in a solution that has been mixed to the following
proportions.: 1/2 cup of bleach and 1/4 cup of Ivory or Lux soap
(liquid or soap) per each gallon of lukewarm water. Allow the fabric
to soak until the bleach has killed the mildew and the stains can be
brushed out with a common kitchen scrub brush. Rinse the fabric
thoroughly in cold water to remove all the soap. This may require
several rinsings. Incomplete rinsing can cause deterioration of sewing
threads and prohibit the fabric from being properly retreated. Allow
the fabric to dry completely.
Do not steam press or dry in an electric or gas dryer! Excessive
heat can damage and shrink the fabric since it is heat sensitive.
This method of cleaning may remove part of the water and stain
repellent that was applied to the fabric during its manufacture. It is
recommended to retreat with such water repellency products as Apseal
and Uniseal. We do not recommend any wax based treatments such as
Thompson's Water Seal or any of the silicone products such as SC-15
or Aqua-Tite. Wax based products prevent the fabric from breathing,
and encourage mildew growth while the silicone products interact
with the original fluorocarbon finish and seem to cause a rapid loss
of water repellency.
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