Portlight Questions

[SeaJay]

Ok, I’m at a bit of a dead end on this…I need to purchase 4 opening portlights, (custom build) and have tried, without luck, to find some independent evaluation of the various major brands.

These things aren’t cheap and I’m just not comfortable in using the manufacturer’s marketing material as the major basis of my purchase. While the AL or SS frames have obvious attractive features, the Bomar “plastic” portlights are considerably less expensive. Is this false economy in the long run. I would really appreciate some feedback from the members of this forum. What have been your experiences? What features should I be looking for, what do I want to avoid?

Regards to all,

SeaJay

[PAR]

The usual suspects in materials are bronze, aluminum, steel and plastic. Bronze is highest on the list for durability. It's strong and weathers the marine environment well. Stainless is a good choice, if it's 316L. Aluminum tends to be made more cheaply then the bronze or steel versions. It's fairly common to see extruded assemblies with less then desirable alloys. They seem to pit quickly and aren't especially strong. Custom built units can be far better with good grades of aluminum and thick enough sections to tolerate abuse. Plastics are easy to manufacture and why you see them. They aren't especially strong and eventually will break down from UV. You can get hundreds of years of service from a bronze unit, maybe 20 from a plastic one, with the last 10 looking pretty chalky.

In the end, most try to balance price against the durability they want. If you don't expect to hand this boat down to your kids, then plastic may be an option. If you'd like your kids to have the option of handing it down to your grand kids, then bronze is the choice.

[SeaJay]

Thanks Par for your typical informative reply. I sort of figured the materials would line up as you noted, but what about quality of construction and details. Are there any features or models you would or would not recommend?