Do you have a galvanized tub that you would like to waterproof? If so, you’re in luck! In this guide, we will walk you through the process of waterproofing a galvanized tub. This is a process that can be completed in just a few hours, and it is well worth the effort. Let’s get started!
What Happens When Zinc is Exposed to Water?
When zinc is exposed to water, it will slowly start to corrode. This is because zinc is a reactive metal and it will oxidize when it comes into contact with water. The rate of corrosion can be accelerated by factors such as the presence of salt, acidity, or other chemicals in the water. Over time, this corrosion can lead to holes and leaks in the galvanized tub.
To prevent this from happening, it is important to waterproof the tub. This will create a barrier between the zinc and the water, which will prevent the corrosion process from taking place. There are a few different ways that you can waterproof a galvanized tub, and we will discuss them all in this guide. [1]
Zincs Reaction to Various Water Types
One of the first things that you need to understand is how zinc reacts to different types of water. This will help you choose the right method for waterproofing your galvanized tub.
Deionized Water
Deionized water is water that has all of the impurities removed. This includes things like salt, minerals, and chemicals. Deionized water is often used in industrial applications, and it can be very corrosive to metals.
Otherwise, the deionized water will cause the zinc to corrode and eventually leak.
Fresh Water
The most common cause of galvanized tub failure is corrosion. Corrosion can be caused by a number of factors, but the most common is exposure to fresh water. When exposed to fresh water, the zinc coating on the tub begins to corrode, and this process accelerates when the water is hot. The result is a rusty tub that needs to be replaced.
Corrosion can also be caused by chemicals in the water, such as chlorine or bleach. These chemicals can speed up the corrosion process, and over time they will damage the tub beyond repair.
Another factor that can cause corrosion is abrasion. Abrasion occurs when something rubs against the surface of the tub, causing tiny scratches. These scratches provide a place for corrosion to start, and over time they will weaken the tub until it finally fails.
Fortunately, there are a few things you can do to prevent or slow down corrosion. One is to regularly inspect the tub for any signs of rust or damage. If you see any, take action immediately to repair or replace the affected parts.
Another way to prevent corrosion is to coat the tub with a waterproof sealant. This will create a barrier between the water and the metal, and it will help to slow down the corrosion process. There are many different types of sealants available, so be sure to choose one that is specifically designed for use on galvanized metal.
Finally, you can also try using a different type of water for your tub. If you live in an area with hard water, consider switching to distilled or filtered water. This will help to remove some of the minerals that can cause corrosion. [2]
Seawater
Seawater is water that contains salt, minerals, and other contaminants. This is the type of water that you would find in the ocean.
The first step is to make sure that the tub is properly sealed. You can do this by using a sealant or a layer of paint.
Another option is to coat the inside of the tub with a material that will resist corrosion. This can be anything from wax to epoxy resin.
Finally, you can also add a layer of protection by using a zinc-based primer on the inside of the tub. This will help to create a barrier between the water and the metal, which will prevent corrosion.
Zinc Protects Other Metals
Galvanized tubs are coated with a layer of zinc. This zinc layer protects the tub from corrosion and rust. However, over time, the zinc layer can wear away, exposing the metal underneath to corrosion.
To prevent this from happening, you can apply a waterproofing sealant to the tub. This will create a barrier between the metal and the water, preventing the metal from corroding.
There are two main types of waterproofing sealants: silicone-based and urethane-based. Silicone-based sealants are cheaper but they don’t last as long as urethane-based sealants. Urethane-based sealants are more expensive but they will last longer.
To apply the sealant, simply follow the instructions on the package. Make sure to apply it evenly and to all sides of the tub. Allow the sealant to dry completely before using the tub.
Waterproofing your galvanized tub will extend its lifespan and prevent rust and corrosion from damaging the metal. This simple task will save you money in the long run by preventing you from having to replace your tub prematurely. [3]
How Can A Zinc Barrier Stop corrosion?
A zinc barrier will stop corrosion by providing a physical barrier between the metal and the environment. The zinc will corrode first, sacrificing itself to protect the underlying metal. This is why galvanized steel is often used in outdoor applications where it will be exposed to the elements.
If you’re using your galvanized tub for gardening, you can also add a layer of rocks or gravel to the bottom before filling it with soil. This will help drainage and prevent the tub from rusting out.
When it comes to cleaning your galvanized tub, it’s important to use mild soap and water. Avoid using harsh chemicals or abrasive scrubbers, as this can damage the surface of the tub. If your tub does start to show signs of corrosion, you can sand down the affected area and repaint or reseal it.
Common Uses of Zinc
Zinc is often used in galvanized steel, which is steel that has been coated with a thin layer of zinc to protect it from corrosion. This process is called galvanization.
Galvanized tubs are commonly used as planters, both indoors and out. They can also be used as storage containers for things like garden tools and pool toys.
If you have a galvanized tub that you would like to use for one of these purposes, it’s important to waterproof it first. Otherwise, the water will eventually rust the tub and cause it to leak.
Luckily, waterproofing a galvanized tub is easy to do and only requires a few supplies that you likely already have around your home.
Zinc Vs Zinc Alloy Plating
There are two types of galvanized steel: zinc plating and zinc alloy plating. Zinc plating is the most common type and is what you’ll find on most galvanized tubs.
Zinc alloy plating is a bit more expensive, but it’s also more durable and provides better corrosion resistance. If you can afford it, we recommend going with a zinc alloy-plated tub.
Either way, both types of galvanization will need to be waterproofed to protect against rust and leaks. [4]
How To Keep a Galvanized Bathtub from rusting?
When it comes to galvanized tubs, one of the main concerns is rust. Rust can not only damage the tub, but it can also stain clothing and cause other problems. There are a few ways to prevent rust from forming on your galvanized tub.
Another way to prevent rust is to coat the inside and outside of the tub with a clear sealant or paint. A layer of insulation will protect the metal from any water that comes into contact with it. Be sure to reapply the sealant or paint every few years to maintain the waterproof barrier.
If rust does form on your galvanized tub, you can remove it by sanding it down and repainting or resealing the area. With a bit of maintenance, you can keep your galvanized tub sparkling for years! [5]
FAQ
Are galvanized bathtubs safe?
Galvanized tubs are safe for use as long as they are properly cared for. This includes regular cleaning and sealing to prevent rust. Be sure to avoid using harsh chemicals or abrasives on the tub as they can damage the finish.
If you have any concerns about the safety of your galvanized tub, we recommend consulting with a professional before using it.
How do you seal a galvanized metal tub?
There are a few different ways to seal a galvanized metal tub. One way is to coat the inside and outside of the tub with a clear sealant or paint. This will create a barrier between the metal and any water that comes into contact with it. Reapply sealant or paint every few years to keep the waterproof barrier intact.
Another way to seal a galvanized metal tub is to line it with a heavy-duty liner before using it. This will prevent any water from coming into contact with the metal itself. Be sure to clean and dry the tub thoroughly before installing the liner.
Regardless of which method you choose, be sure to inspect your tub regularly for signs of leaks or rusting. With a little bit of care, you can keep your galvanized tub looking like new for many years to come! [6]
How long does it take for galvanized steel to rust?
The rate at which galvanized steel will rust depends on a number of factors, including exposure to the elements and the quality of the coating. Generally speaking, however, it can take anywhere from a few months to a few years for galvanized steel to start showing signs of wear and tear.
If you’re looking to extend the life of your galvanized tub, there are a few things you can do to protect it from the elements. One option is to apply a waterproofing sealant, which will create an additional barrier against moisture and humidity. Another option is to regularly clean and wax the surface of the tub, which will help prevent dirt and grime from building up and causing corrosion.
Either way, taking some time to waterproof your galvanized tub will be well worth it in the long run!
Is galvanized steel rust proof?
Galvanized steel is not rust proof, but it is far more resistant to corrosion than regular uncoated steel. The galvanized coating helps to protect the steel beneath from exposure to moisture and other elements that could cause rust.
However, over time the coating can wear down, particularly if the tub is regularly exposed to harsh weather conditions or chemicals. This can eventually lead to corrosion and rusting of the underlying steel.
That’s why it’s important to take some steps to waterproof your galvanized tub, in order to extend its lifespan and keep it looking its best.
Can galvanized steel be coated?
Yes, galvanized steel can be coated. This is often done to improve the appearance of the metal or to protect it from further corrosion.
There are a few different types of coatings that can be used on galvanized steel, including paint, powder coating, and anodizing. Each type of coating has its own advantages and disadvantages, so it’s important to choose the one that best suits your needs.
Applying a coating to your galvanized tub is a great way to protect it from the elements and extend its lifespan. [7]
Useful Video: How To Seal A Behrens Galvanized Tub
Conclusion
In conclusion, waterproofing a galvanized tub is not as difficult as it may seem. With the right products and a little bit of effort, you can have your tub looking and performing like new in no time. Have you tried any of these methods for waterproofing your galvanized tub? Let us know in the comments below!
References:
- https://www.corrosionpedia.com/does-zinc-rust/7/7030
- https://www.waterquality.gov.au/anz-guidelines/guideline-values/default/water-quality-toxicants/toxicants/zinc-2000
- https://www.dorsetware.com/how-does-zinc-plating-stop-corrosion/
- https://www.sharrettsplating.com/blog/zinc-vs-zinc-alloys/
- https://www.homesteadingtoday.com/threads/rust-prevention-for-galvanized-wash-tub.517496/
- https://www.doityourself.com/forum/designing-kitchens-bathrooms/263172-galvanised-tub-needs-sealing.html
- https://tnemec.com/remedy-index-page/can-i-coat-galvanized-steel/