They still look pretty good after a year:
Which is to say: the orange acrylic hasn’t faded, the black paint’s still in place, and the gates seem to stay closed.
One might quibble about the missing wire snippet on the lower left corner, but on the whole it doesn’t get much better than that …
The Smell of Molten Projects in the Morning 
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3 responses to “Please Close The Gate Signs: One Year”
For those not into that elaborate, I have had good luck printing on paper with a color laser printer then having the sheets laminated by my local office supply place. They lasted a full year with no real signs of fading as I remember. Swapped the signs after a year with different version, I suspect they would have lasted much longer.
Quick and easy. There was some deterioration where they had been stapled to poles
I did laminate some laser-printed notices (tone being inherently UV resistant) for the Vassar gardens a while ago and they lasted for as long as they were needed, admittedly inside a kinda-sorta weather resistant bulletin board. I think the trick is a good seal between the two plastic sheets, rather than running paper all the way to the edge.
Certainly worth a try!
And perhaps to prepunch the paper where you want to make holes, so it’s sealed around those as well.