Aluminum Window Frame Finishes

I have a decision to make regards the finish on aluminum window frames. Anodizing or powder coating are the options. These are Diamond Sea Glaze so I think finish prep isn't a variable. So, in your experience, which is these two are the longer lasting? Thanks.

 

DSG, I'm pretty sure uses powder coating, but anodizing also works. What are your concerns, as DSG will make some nice ports, hatches or lights for you? Powder coating is a little harder and probably more scratch resistant.

 

I'm seeking experiences regards which of the two will look better after several seasons. I have seen powder coat fail during that span of time but I have no idea what level of prep was behind it. Again, I have no doubt about DSG's prep of either finish. Thanks.

 

We have DSG windows in our boat which is now in its 10th year and there has been no degradation of the profiles

 

Anodized or powder coat or ...

 

sorry brain failure, powder coat

 

Durability can certainly be quantifiable, though considerable subjective consideration must be accepted. By this I mean how are the samples treated. If you don't abuse either, then both will have a long life, but if you expect considerable abuse, the harder coating might be a better choice. Anodizing, as I mentioned is a bit softer and scratches easier, but has proven a very good coating, given reasonable care and use. Ports, hatches and light frames don't see a lot of abuse, typically being away from things that might get dragged over them. Hatches might see the most abuse, but compared to a mast (for example) an easy life comparatively, especially considering how well anodizing has worked on sailboat spars. On the other hand stanchion tubing, bases and fittings do see a rough life, with lines (etc.) being dragged over them a lot, so maybe powder coating is a better choice.

 

Powder coating it is! Thank you all for the thoughtful input.