Rust-Oleum Stops Rust Universal Bonding Primer Spray, Flat Gray

easy to spray on and coats evenly when applied properly. Good value and worked as a great primer or undercoat for my project.

This is by far the best Rustoleum product I've ever used. It sticks to everything I've tried -- bare metal, painted metal, wood, particle board, melamine, plastic -- you name it. It levels well, it covers well, and it works well as a primer (preparing a surface for paint). It dries to the touch in an hour and the best part is (unlike all the other Rustoleum paints and primers I've used) you can TOPCOAT ANYTIME. (Other products require you to topcoat within an hour or wait 24 (and even 48) hours before top-coating -- woe to any painter who tries to recoat within the prohibited window. Having to wait that long before top-coating means that even small paint projects can drag out into days and even weeks.) The only downsides to this primer are: * It's more expensive than similar products * A can doesn't go far (Rustoleum says it will cover 10 sq. ft. but that's not much and I'm sure they mean a flat continuous surface, not a 3D one) * It's hard to find. Stores don't stock it because there's not much demand for it. There's not much demand for it because people don't know about it. * It's extremely smelly and should be used outdoors or in a very well-ventilated space. Be sure to use a mask. I used it in my basement with the door closed. and afterward I could smell it on both the first and second floor. Rustoleum intended this primer for difficult-to-paint surfaces, but I now use it for other projects (when I can get it) because of the fast recoat time. Note: You can also get this in a 1-quart (32 oz.) can, which may be more economical because spraying can waste a lot of paint. Both the spray and the brushable versions come in white and gray.

Great value for the money. Works great as you can see in the photo perfect for refinishing wicker patio furniture or anything else that would be outdoors in the weather. Goes on well and dries quickly. Worked great with the black mat I chose. I will purchase this brand again.

I used this primer on a concrete porch goose before painting, and I was really impressed with the coverage. It went on smoothly, adhered well to the concrete surface, and provided a solid base for the paint. One coat covered better than I expected, which helped save both time and product. The finished paint job has held up nicely, and I feel like the primer definitely contributed to the durability. I would absolutely use this again for future concrete or outdoor decor projects.

We primed heavy gauge stainless steel successfully. 2 coats of this, 2 coats black, and all good

Rust Oleum is a great product!

This is by far the best spray paint white primer. It is VERY EASY to apply and dries quickly. You can recoat ANYTIME without having to follow strict rules. It is the only primer that creates such a fantastic bond between the surface and top coat. It even works great on fiberglass. I build hobbiest model flying rockets. The fiberglass tubes take a licking without damage because of this primer.

My application was to restore Rohn 25 tower sections. They were stored for 12 years, and although never in the weather, there was some small rust spots, mainly in joints or cross-members. After cleaning and degreasing the metal I applied Rust-Oleum 330491 bonding primer. Kudos to Rust-Oleum Product Support Rep, "Karen", for recommending this product. The job turned out perfect and after the sections were painted the job came out better than I thought! I also used this product to paint several fiberglass communications antennas which were showing their age. The primer and paint did not affect the performance of the antenna, and again, another perfect job. I'm very satisfied with the product support and quality.

A Good Product; my choice.

Use as a primer on stainless steel after well preparing the job and it bonds really well to steel, dry within 10 minutes to touch and not easy to remove even with sand paper next day.

Applies well, quick drying. Bonds