A bimini top is an inexpensive
way to protect yourself and your passengers from sun and rain
while enhancing the appearance of your boat.
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Boat covers are available for any size and style vessel:
Universal biminis are designed for a standard type and sized
boat.
Semi-custom biminis are universal covers constructed with extra
sturdiness in the areas of the bow and windshield with boat trailering
in mind. (If you trailer your boat, it is recommended that you
collapse the bimini as you should not exceed 30 mph with the bimini
up.)
Biminis are also sold for specific style boats such as pontoons
and ski boats.
Biminis are made of a variety materials including cotton duck,
polyester and vinyl.
Measuring for a Bimini
To order a bimini you need the vessel measurements as well as the
make, model, style and year of the boat.
Remember the purpose of a bimini top when measuring the height.
If a bimini top is mounted too high it will not block the sun or
rain adequately. The top should be just high enough to stand under.
The average bimini top stands about 5 feet from the floor of the
boat. But measure from the mounting point to the desired height
to determine the size for your vessel.
Bimini tops are usually sold in lengths of 5- to 8-feet.
The mounting brackets will be located about half way between the
front and back of the vessel (the widest point). Measure the distance
from each mount location to determine the width needed.
Measure the distance from bow to stern to determine the length.
Do not include the windshield and be sure to measure in the center
of the boat.
The type of fabric, the length of the bimini, the material of the
support poles and the width of a vessel determine the price of a
bimini top. Generally, you can equip a 20-foot vessel with a 5-foot
bimini for less than $250.
Mounting hardware, deck mounts and aluminum support tubing is usually
included. Stainless steel poles and hardware are more expensive
but they will last a lifetime. Chrome and brass-coated fittings
are also popular and long lasting, but in time they tend to corrode.
Nylon fittings are both durable and inexpensive.
Most companies offer a one-year manufacturer's warranty on the
tops and a 3- to 5-year fabric guarantee.
Here is a thumbnail glance at bimini materials and their properties:
Cotton Duck -Inexpensive,
but won't last as long as other fabrics due to degradation from
ultraviolet (UV) rays. The material also tends to leak. Also keep
in mind that cotton is subject to dry rot, so proper waterproofing
is crucial to prolong its life. More
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Vinyl- The most popular
choice because it's waterproof and will divert water to the sides
of the top for runoff. Vinyl bimini tops range in quality from low
to very high, and are easy to clean. More
info
"Solution-Dyed"
Polyester- This appears to be the best value for colored
bimini tops Polyester that is solution-dyed has an extremely rich
color and holds up very well to UV-rays for less fading. Polyester
tops are very strong and resist stretching, so they also retain
their shape well. Polyester tops are more water-repellent and abrasion-resistant
than acrylics. More info
Acrylic- This top-of-the-line
soft woven fabric looks and feels terrific. It holds up well to
UV rays and has exceptional fade resistance and strength. However,
it has a tendency to stretch and sag, and is prone to leaking. Acrylic
tops are usually more expensive, but not as abrasion resistant than
some others. More info
Woven acrylic material is considered the premium quality for bimini
tops. The material is silky smooth and wrinkle resistant. Caution
is in order, however, if the material is not solution dyed as it
has a tendency to sag and leak.
Perhaps the most popular brand of solution dyed woven acrylic biminis
is Sunbrella. Most woven acrylics are treated with a fluorocarbon
waterproofing
substance. Sunbrella usually offers a 5-year warranty on its fabric,
2 years longer than some most other fabric brands.
Cotton duck is a canvas-like fabric. Cotton duck fabric is used
for everything from director's chairs and tote bags to artist's
canvas and bimini tops. The fabric is sold in various grades of
thickness and can be purchased dyed or unbleached (the "natural,"
oyster color). Cotton duck biminis are generally inexpensive but
they often lack the durability of other materials. If treated with
a quality waterproofer,
however, cotton duck fabric will last longer.
Cited as the "best value" by the Boat Owners Association
of the United States, solution-dyed polyester is known for its resistance
to stretching and its ability to resist fading. Make sure to use
a good waterproofing
treatment at least once every season as it can be susceptible
to moisture breakdown.
Usually made of vinyl-coated reinforced fabric, it can be 100%
waterproof as well as ultraviolet- and mildew-resistant. Vinyl biminis
are made of a durable, plastic fabric that allows rainwater to cascade
from the surface and not leak though the material. Vinyl tops are
generally the easiest to keep clean. However, they can crack and
become brittle over time, and lose its original color. A
waterproofing
treatment at least once every season will protect the threads
that hold the panels together.
Why allow water, mildew, oils and bird droppings ruin the appearance
of your boat and shorten the life of the top and other marine equipment?
A quality fabric waterproofing agent will protect all fabrics from
the inevitable breakdown of the material and threads in any type
of bimini top. Although untreated canvas is most susceptible to
rotting and ruin, even acrylic and vinyl bimini tops will eventually
break down.
It makes good sense to treat your boat's cover and other boat equipment
with an environmentally-friendly waterproofing agent and stain repellant.
Premium marine waterproofing agents minimize moisture damage, prevent
mold and mildew, and the damage caused by ultraviolet rays and airborne
pollutants.