Salon window extrusion corrosion

[madhatter1]

My salon window frames are in excellent condition. Fuzzies for slider old and hard but I do not open them. Question is on each side there are 1-2 tiny little spots that corrode and “bleed” white dust onto the bright work below the frames. What is the best way to seal up and stop corrosion short of drilling out the corrosion and filling to stop the process? Spots are maybe 1/8” or so.

I am a self proclaimed master of JB weld parts making (for motocross bikes, not on marine stuff) and am thinking of drilling out 9/16” to eliminate any material with the corrosion on it and then filling in. I can make it invisible but need to see if a better option is a proven remedy.

 

[SEVEN]

Have the frames been painted? If so drilling and patching and touch up paint works best. I’ve used this product.

 

[scottinsydney]

If you have white dust then aluminium has some water near it which is reacting with the aluminium. You may find that there are pinholes in the aluminium letting water in. Regardless, you will need to use an phosphoric acid etch primer to convert the aluminium and kill corrosion before using any other product. There are several websites that show this in details, but its what causes pitting in aluminum.

We are 2/3 way through repairing and repainting our wheelhouse window frames. You may find our experience helpful.

https://www.samsmarine.com/forums/showthread.php?33763-Repainting-Window-Frames