High Density Polyethylene (H.D.P.E.): Machine 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 sharp objects.

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.

Aluminium: 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, 

Kevlar: 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).

Fiberglas: 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.

Wood/Duralight: 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.

Wood/Epoxy: 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 Materials