Although metal is a particularly durable material, over time it can wear, corrode, and rust. While this is a slow process, it is something you will want to avoid.
The last thing you want is for metals used for ducts, storage tanks, or pipes to become damaged. Not only is this not ideal, but replacing them can be costly.
An easy solution to this problem is to purchase cold galvanizing paint. Zinc-rich paint helps to improve corrosion and protects the metal from the elements. It improves the overall appearance and extends the metal’s life.
In this article, we have researched and reviewed five of the best galvanizing paints so you do not have to. We have included a mixture of different paint types, to suit different scenarios.
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5 Best Cold Galvanizing Paints
Rust-Oleum High-Performance System Compound Cold Galvanizing Spray Paint
Rust-Oleum is our top pick as it is a fantastic product. It is gray and has a sleek metallic finish, allowing the metal to look brand new.
It can be used on many different metal surfaces, from ducts to storage tanks. As it dries quickly, it is hassle-free and will not take long to apply multiple coats. It dries within 15 minutes.
This particular cold galvanizing paint will withstand a heat of up to 200℉ and is easy to apply. As it is in a spray bottle it applies the paint easily and evenly. The nozzle is extra-wide for comfort. This helps to prevent finger fatigue while in use.
The spray can be applied at an angle, which is great for the harder-to-reach areas. It is 93% pure zinc and is a great option for touching up older metals. It is corrosion-resistant and is particularly durable.
PROS
- Quick to dry – Mess and hassle-free allowing the paint to be applied quickly
- 200℉ heat – High heat allows it to be used on pipes and heated metals
- Extra-wide nozzle – More comfortable to use and helps to prevent finger fatigue
CONS
- Touch Up Spray – While this can be used to cover the metal, it is more suited for touch up jobs
ZRC 10001 Cold Galvanizing Compound
If you are looking to paint a large area of metal, this is the best option. It is available in ½ pint which will last longer than a spray can. As it is in a tin, it may be messier to use and you will need to apply it with a paintbrush, or roller.
It uses an organic Zinc-Rich compound. As it contains 95% metallic zinc, it is going to be particularly durable and long-lasting. If you are looking for a flat finish, this is the best option for you. It is battleship grey in color.
The paint is reasonably priced and it also meets the VOC standard for the 50 US states. It has a flashpoint of 104℉, which is reasonable. It has a food abrasion and impact resistance which is great if being used on metal outside.
The drying time does vary, but typically the second coat can be applied after 12 hours.
PROS
- Zinc Rich Compound – This allows the paint to be well made and durable
- Flat Finish – This allows the paint to look sleek and new
- Grey color – Will match the majority of metals
CONS
- Drying Time – The drying time of this paint will vary which can prolong the painting process
Rust-Oleum System Galvanizing Compound Spray Paint
This is another spray paint by Rust-Oleum. It is very reasonably priced and is gray. If it does come into contact with food, it meets the USDA requirements, which is reassuring.
It has a smooth and sleek finish. It is intended to be used on plastic and vinyl and can be used to touch up gutters. It will also repair galvanized ducts.
It is quick-drying, within only 20 minutes, and is suitable for heat up to 200℉. It is made from 83% zinc, which allows it to be corrosion resistant, and durable. Being a spray can it is easy to use and administer.
PROS
- Reasonably priced – will not cost too much to purchase
- Quick-drying – allows you to paint the metal quickly and efficiently
- Repairs – In addition to touching up metal it can also repair galvanized ducts
CONS
- Plastic and Vinyl – As it is intended to be used with plastic and vinyl it may not be the best option for all types of metal
CRC Zinc-It Instant Cold Galvanize
The CRC galvanizing paint is fantastic if you are looking for a quick option. It is fast to dry (within 15 minutes), which is excellent if you need to apply multiple coats. In addition to this, it is excellent to use a touch-up, if small areas of the metal need to be addressed.
It is slightly more expensive in comparison to the other options featured of a similar size, however, it does have proven results. It helps to prevent scratches and rust. It is actively helping to prevent corrosion and protects the metal.
PROS
- Protects the metal – It actively works to prevent corrosion and rust which is excellent for durability
- Spray can – Easy to apply
- Quick Drying – This is useful if you need to cover the metal quickly
CONS
- Expensive – While it is not the most expensive option, it is still more expensive in comparison to the other spray paints included
Crown 7007G Metallic Gray Cold Galvanize Coating
The Crown Coating is a useful option if you need to paint a lot of metal. It comes in a one-gallon tub, which is a significant amount. Given that there is a lot of paint, this is the most expensive option we have featured.
It contains 93% Rich-Zinc and has a matte, light gray finish. It is a weld-through primer and will protect the metal. It has a flashpoint of 102℉.
The protection it provides is the equivalent to hot-dipped galvanizing, which is durable and long-lasting. It will protect against corrosion, rust, and scratches.
PROS
- One gallon tub – This is great if you are looking to paint a lot of metal
- Weld-through primer – It is great at protecting the metal
- Equivalent to hot-dipped galvanizing – This paint is made to last and is durable
CONS
- Expensive – This is the most expensive paint featured, but it is also the largest tub featured, and the price is reflective of this
Buyer’s Guide
Types of Cold Galvanizing Paint
When it comes to cold galvanizing paint, it can be purchased in different forms. Given this, you will need to know the differences before purchasing.
As they are slightly different there will be a certain type that is better for your project.
Spray can
The majority of cold galvanizing paints can be purchased in a spray can. Typically a spray can is the best option. They tend to be easier to apply and create less mess.
The spray will allow you to cover the metal you are purchasing evenly. A spray can is also a quicker option overall and does not require the use of any painting apparatus.
Paint Tin
The other main form you can purchase cold galvanizing paint in is a paint tin. Paint tins are the better option if you are looking to use a lot of paint. As they have a higher capacity, it would be the cheaper option overall.
Unlike the spray cans, you will need to apply the cold galvanizing paint using a paintbrush. This does require more patience and accuracy in comparison to the spray can, and is the more awkward option of the two.
How Cold Galvanizing Paint Works
Before purchasing cold galvanizing paint, it is useful to know how it works. While this paint has a fairly complicated name, it is a fairly simple process. The cold galvanizing process consists of applying zinc-rich paint to a steel surface.
Cold galvanized paint is painted suitable to use with steel elements and materials. It is useful because it helps to prevent the steel from becoming corroded and rusted over time. Cold galvanized paint can be used on many different metal surfaces, such as storage tanks, gutters, and fences.
In addition to preventing rusting and corrosion, it can help to improve corrosion and allow the old metal to look fresh and new.
Type of Project
The type of project you are carrying out will affect the paint you are using. For example, some cold galvanizing paints will be more successful than others.
If you are looking to protect metal that will be constantly affected by the elements, you will want to purchase a heavy-duty option. However, some metals will be better with only a light coating of paint.
It is worth looking into the longevity of the cold galvanizing paint as some are more successful than others. Given that this paint helps to prolong the life of metal in terms of rusting and corrosion, you will want to choose an option that will not wear over time.
Temperature
Cold galvanizing paint will withstand high temperatures which is great if you are painting things such as pipes.
However, depending on the type of paint you purchase, the maximum temperature can vary. Given this, it is important to ensure that the paint you purchase can withstand the temperature you require.
Ease of Use
The ease of use is important when it comes to purchasing cold galvanizing paint. You will want to ensure that the paint you are purchasing is easy to apply. Whether it is applied using the nozzle of a spray can, or using a paintbrush, it should cover the metal surface with no issues.
If you are purchasing a spray can, you will want to ensure that it comes with a good quality nozzle. If the nozzle is difficult to press, or if it is easy to break, this will affect the painting process.
If you are purchasing a paint can, you will want to ensure that the lid is secure when not in use. This will help to prevent the paint from tipping and will prevent the paint from tipping if tipped over.
As you will need to use a paintbrush with this type of cold galvanizing paint, you will want to ensure that it applies easily and can be washed off the paintbrush will little issue.
Frequently Asked Questions
How do you apply cold galvanizing spray?
Applying cold galvanizing spray is simple to apply and is typically easier and more mess-free in comparison to cold galvanizing paint. First, you will want to shake the can for around 30 seconds.
To apply the spray you will need to take off the cap and hold the can upright. You will want to place that can around 12 inches away from the metal surface, ensuring that it is not too close. When you are ready, you will want to press down the nozzle and this will release the paint.
You will then want to spray the metal quickly in an up and down motion, ensuring all of the metal is evenly covered. After you have covered the metal with one coat of paint, you will want to leave the first coat to dry. The time will vary depending on the spray paint you have chosen.
Once dry, apply a second coat and assess once dry. If the paint has not completely covered the metal, you will want to apply a third coat of paint. After you have finished, rinse the nozzle with water to help prevent it from becoming clogged, and replace the cap.
How long does cold galvanizing last?
The answer will vary depending on the paint you have purchased and what you have painted. If the paint is being consistently exposed to the elements, it will not last as long as paint that has not.
When applied correctly, cold galvanizing paint can potentially last for up to 85 years.
How good is cold galvanizing?
Cold galvanizing is a great way of prolonging the life of metal and helping to prevent it from rusting and corroding over time.
It is particularly good to use on metal that is exposed to the elements. It is a very successful and non-expensive way of prolonging the life of the metal.
