Yup, Ken is right, a coat of paint. It would be easier to take them down in sequence, paint, let them dry, and put them back in their spaces.
I agree with paint as the first option. You could also cover them up with other tiles using glue. Do a search in Amazon for "faux tin tiles" and it will bring up a ton of glueable options in lots of different sizes.
Hi there, your best and most cost efficient option is to paint them. This tutorial will show you how - https://www.hunker.com/12307648/how-to-paint-old-ceiling-tiles
You can paint it with Kilz paint and that should cover it
i would prime with a good stain blocking primer like Zinser or Bin 123 before I paint.
Fix whatever was causing the staining and then prime and repaint.
Hello there is a proprietary paint product at the home improvement centers. It might be a solution to consider.
You can totally paint them! Just make sure they're super clean and prime first. Cheap fix!
You can spray paint with Kilz. That's probably the easiest and most affordable method.
Can they be spray painted?