Paint is coming off fence panels

[Ackoman]

Hello,

Last summer, I painted our very old garden fence panels with Cuprinol Ducksback, which I had been recommended to use.

The fence panels are very old and had no sign of ever having been painted previously.

They looked great after painting and I was well satisfied with my efforts.


BUT - over the winter, the paint started to fall off and a lot of the panels now have large ish areas dotted all over them that are completely devoid of paint.

What did I do wrong? I am wondering if I should have done a "mist coat" as one would when painting a new wall? The fence panels were so old and dry could it be that the paint did not adhere properly?

Thanks,

Ackoman

 

[conny]

They have simply weathered during the winter.
Each year I give my fence panels 2 coats of Ronseal Fence Life in the spring and another 2 coats in autumn. They are 'fairly' new in that they have been up for 5 years. By spring there are 'bald' patches all over them. I think it's simply because they dry out during the summer so they contract. then as the weather deteriorates towards autumn/winter the air gets moist and manages to penetrate the wood. This has the effect of 'lifting' the previous seasons protection so exposing bare wood.
Sadly it's something you need to do each year no matter how new/old the fence is. Obviously with older fencing, especially not previously treated, it will be worse. You can only hope to slow down the process, you will never stop it.

 

[Tigercubrider]

It's possible that you painted over lichen that has lost it's grip on the timber