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Fiberglass boat construction is when the major components of the boat—the hull, deck,
liner, and large parts like consoles—are molded from fiberglass. The mold is first
sprayed with gel coat, then fiberglass cloth is applied, and then resin is used to saturate
or “wet out” the fiberglass. When the resin cures, you have a hull.
Resin and cores make up a large part of the construction. There are three types of
resins: polyester, vinyl ester and epoxy. Core materials are often used to reduce weight
and increase stiffness.
FIBERGLASS BOAT MADE BY INDUSTRIAL TECHNO INTERNATIONAL
INDUSTRIAL TECHNO INTERNATIONAL LAHORE
TYPES OF FIBERGLASS RESIN
There are three types of resins: polyester, vinyl ester and epoxy. Each has a place in the boat-
building world. The important factor is for the builder to correctly match the resin to the type of
reinforcing material being used so that the strengths are matched. For example, a vinyl ester
resin is ideal for S-glass but, when used with E-glass, the reinforcing material will fail before the
resin.
Polyester:
This is the resin most commonly used for boat building today, and most boat owners are familiar
with it. It is inexpensive and generally all-purpose. It has low stretch (elongation) properties so it
is not used on modern high-performance boats, but it is perfectly adequate for most boats. The
most common polyester is an orthophthalic base, but newer isophthalic based polyesters are
gaining in popularity. The isophthalics are more resistant to water and chemicals, are more
abrasion resistant, and have higher impact and fatigue (flex) performance. Most modern gel
coat finishes are made with isophthalic resins.
Vinyl ester:
An alternate to polyester, vinyl esters have better stretch characteristics than polyesters, so they
more closely match the strengths of the various exotic reinforcements. Vinyl ester also has good
water resistance and fatigue properties, but it is more expensive than polyester resin. One
important feature of vinyl ester is that it has excellent secondary bonding strength, so bulkheads
or stringers added to a cured hull will have a better bond than on a polyester hull.
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fiberglass/acrylic/poly carbonate
Get natural light from sun light for your ware houses, home, factory, hospitals, shopping malls, hotels.
Using sky lights.
Prismatic sky lights increase/enhance natural light.
Fiberglass sky light frame, sky light
