I have used the Pebeo Vitreo and they work fine. Most of the time I use Patio Paint. On glass items, I make sure and seal it with a clear coat. But have had glass items painted outside for years now and the paint is still on them. I make sure they "cure" well before any rain hits them.

As long as you're going to seal them afterward, I would think you could use any kind of paint...

What do you use to seal the painted glass?

I use patio paint and acrylic and then seal with Modge Podge. Haven't ever had any problems outside at all.

Donna in Florida

Okay, I'm really in a bind. I'm trying out window painting for the first time and i need to know what kind of paint would be best. I need something that is weatherproof and washable as well.

I use the Pebeo porcelaine 150 which you also cook in the oven but is supposedly less toxic and I think a little less expensive than the vitreo. I painted some plates (not glass) and baked. I used a couple to make an experimental flower and it has been outside for a year, including a nh winter. I have painted some glass too but non of it has spent a winter outside yet.
Here is the one that has been outside, right after I cooked it. It still looks the same. I'd go take a pic outside but its dark. You can get paint pens to make outlines, and the center glass glob has gold dots of the pebeo paint, also baked.

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Good luck!
Kathy

Does this require some sort pf fixative or bonding agent ahead of time?? tia

I am doing a restoration project on some antique glass globes for and outdoor lighted sign. I appreciate all your comments here. I need a translucent paint and the main concern here is that the paint will last for years to come. This is very important to the buyer.
Curious where to get this product and any advice on preparing surface, baking it on?, and coating it? If the paint is so great I wonder about the clear coating peeling off in time. This is an outdoor light on a historic building. Thanks in advance!!!

Any time you paint on glass it has to be very clean. We wipe it down with Isopropyl Alcohol 70% It's cheap comes in 16 oz size. Wipe glass & make sure it dries well before painting. Keep your fingers off the glass, they impart oils that may cause paint to fail. If you need to "rest" your hand while painting use a lint-free cloth under your hand to keep hand off of the glass.