Tinting windows to protect interior teak

[MarkSF]

Despite curtains over the windows (portholes), some light gets underneath them and I can see that the teak has faded below them. The forward cabin has no curtains and the teak bulkhead has faded a lot.

So 3M automotive tint film has 99% UV blockage (99.9% for the premium stuff) even in the lightest (ie no) tint.

Has anyone treated the insides of boat windows to protect the interior? Thinking I could use clear in the main cabin and maybe 50% in the forward one where there are no curtains.

Is this a good idea or have I failed to consider some horrible snag?

[JedNeck]

My only hang up would be turning the cabin in to a cave...clear sounds like a good plan.

[CorvetteGuy]

I tried tint film on 40 year old plexi and it did not adhear to well then when removed left a mess on the porthole... a little teak oil on your faded teak will make it shine once again.