High Density Polyethylene (H.D.P.E.):
extruded and very consistent. UV stabilized means that ultra violet sun
ray inhibitors have been put into the material prior to forming. Its
impact resistance and memory capacity (ability to regain original shape
after impact) are great. Because the polyethylene resin is coloured
throughout, the surface colour cannot be scratched off. It is very hard
to keep anything stuck to it. Will usually not dent. A negative for
this material is weight vs size.
Ram-X: Ram-X is a
thermo plastic. The material is semi flexible and has a memory. Thicker
is better, but also heavier. UV is tough the material. Will usually not
dent. A negative for this material is weight, and it can be cut by
ABS: Known for its great shine it can
give, can have the look of a fibreglass boat because of the clear coat
finish. Extruded product, very consistent. The UV inhibitors are in the
clear coat. One of the best rigid boat materials as far as looks and
impact resistance. Less brittle, than Fiberglas. Also used on the
outside of composite constructions such as Royolex.
Main advantage is no double hull construction that traps water;
lightweight compared to HDPE or RamX extruded very consistent metal
product.& comes in different gauges, thicker is stronger, less
noisy, heavier and but more durable. Single or multi piece hull
construction is important, no long hand made seams below the water line
is better in the long run. In the case of rivets in the construction,
where they are and how many is important. Some are assembled with no
rivets or "all welded". Other considerations may apply,
Usually a lighter weight material than Fiberglas. Simply because the
fibres in Kevlar are much stronger, requiring less material to achieve
the same strength. Hand laid, more likely to have problems with
construction. UV inhibitors are in the gel coat (paint).
Generally lighter weight than the ABS and HDPE however brittle.
Material is hand laid, more likely to have problems with construction
and consistency of the surface. UV inhibitors are in the gel coat
(paint). Fiberglas is easily cracked and not easy to repair.
A modern method that replaces traditional canvas with a vinyl
impregnated canvas that requires little maintenance and has all the
positive features of the wood/epoxy product.
Often referred to as wood glass construction, these craft are built
using the same traditional method as wood/canvas. However, instead of
canvas they use a clear bonded epoxy on the outside of the hull. There
is an invisible layer of fibreglass cloth between the wood and epoxy so
that the natural beauty of the wood is visible on the outside. The
entire boat is then varnished. Lighter weight and easy maintenance are
two advantages of wood/epoxy construction. Best suited for lakes, ponds
and deep rivers.
Inflatable Boat MaterialsPVC:
Inexpensive, easy to damage and stretch. When buying, newer is better
because of the creasing effect of the material. UV inhibitor throughout
Polyester Laminate: The polyester fabric
density is what increases the strength. Fabric density is measured in
denier or decitex. 1000 Denier is equal to 1100 decitex. UV inhibitors
are in the polymer coatings. Two layers are better than one. When
buying, newer is better because of the creasing effect of the material.
Beware of polyester laminate prdocuts that are over 2 years old!
The fabric in the laminate is out of nylon instead of polyester. More
expensive, stronger than polyester fabric. UV inhibitors are throughout
the coating. Again, two layers are better than one. When buying, new is
better because of the creasing effect of the material. Beware of
hypalon products that are over 2 years old!