Priya Kapoor
POR-15 is a rust-preventive coating designed to be painted over cleaned, rusted surfaces. The product is unique in that it is strengthened, rather than weakened, by exposure to moisture. It can be applied over painted areas, but this may cause it to lift and require reapplication. It is recommended that the surface is prepared with POR-15 primer before painting. The product is also not resistant to UV rays, so a top coat is required to protect it from sunlight.
| Characteristics | Values |
|---|---|
| Use case | POR-15 is a rust preventive coating |
| Application | POR-15 is designed to be painted over a cleaned but rusted surface. It can be applied over painted areas but may lift in the future. |
| Surface preparation | The surface must be sanded and smoothed before applying POR-15. It is recommended to use Marine Clean and Metal Prep to ensure adherence. |
| Topcoat | A topcoat is required if POR-15 will be exposed to sunlight as it is not resistant to UV rays. |
| Drying time | The drying time varies from 3 to 6 hours depending on the ambient humidity. A dry time accelerator additive can be used to reduce the drying time. |
| Application methods | POR-15 can be applied by brushing, spraying, or rolling. |
| Compatibility | POR-15 accepts all paint formulas, including lacquer-based paints. |
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What You'll Learn
POR-15 is designed to bite into rust
POR-15 is a rust preventive coating designed to stop rust by biting into it. It is strengthened by exposure to moisture, unlike other rust preventive paints on the market, which are weakened by it. It does not chip, crack or peel like ordinary paints and resists wear and tear.
To apply POR-15, the surface must be prepared by removing any loose rust and dirt. A wire wheel on a power drill can be used to knock off any loose dirt, paint and flakes of rust. The surface should then be cleaned with a wax and grease remover and washed with a prep wash, such as Marine Clean, and then a liquid metal prep. After 15 minutes, the area should be washed and dried, and then the POR-15 can be painted on.
It is important to note that POR-15 is designed to be painted over a cleaned but rusted surface. The chemical reaction with the rust is part of the bonding process. If the surface is not rusty, the POR-15 will not adhere properly and may lift in the future. It is also important to follow the manufacturer's instructions for use, as failure to do so may result in the product not working effectively.
Once the POR-15 has been applied, it can be top-coated to protect it from UV rays, which will break down the coating. The POR-15 Tie-Coat Primer is recommended as the best prime coat to use before top-coating. It is also important to ensure the area is well-ventilated during application and to avoid breathing in the paint fumes.
Overall, POR-15 is an excellent product for preventing rust and is worth the investment, especially for restoration projects. It is easy to apply and provides a strong, durable finish that will protect against rust.
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It can be used over painted areas
POR-15 is a rust-preventive coating designed to be painted over cleaned, rusted surfaces. The chemical reaction with the rust is part of the bonding process. While it can be used over painted areas, it may not be advisable as it is designed to ''bite' into rust. If the paint underneath is failing, the POR-15 may lift in the future and will have to be redone.
To apply POR-15 over painted surfaces, the paint must first be roughed up. This can be done by sanding the surface and using a product like Marine Clean to degrease it. Then, a liquid metal prep product should be applied to the painted surface, left for 15 minutes, and washed off before painting on the POR-15.
It is important to note that POR-15 is not resistant to UV rays, so if it will be exposed to sunlight, a top coat is necessary to protect it. Additionally, POR-15 should not be shaken before use but rather stirred or poured into another container and spread with a spout.
Some people have reported issues with POR-15 not sticking to painted surfaces, even when following the recommended preparation steps. However, others have reported success in applying POR-15 over painted metal with no issues. It is always recommended to follow the manufacturer's instructions and prepare the surface as directed to ensure the best results.
Overall, while POR-15 can be used over painted areas, it is essential to consider the potential issues and take the necessary preparation and topcoating steps to ensure its effectiveness and longevity.
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It may lift in the future and need redoing
POR15 is a rust-preventive coating that can be used on painted surfaces. However, it is important to note that POR15 is designed to "'bite' into rust" and create a strong bond. When applied over paint, it may not adhere as effectively and could lift in the future. This means that the POR15 coating may separate from the painted surface, requiring reapplication.
To ensure the best results and minimize the risk of lifting, proper surface preparation is crucial. The existing paint should be in good condition, and the surface should be cleaned and roughed up to create a suitable base for the POR15. This process can include using products like Marine Clean to degrease the surface and Metal Prep to prepare the painted surface. Additionally, light sanding or scuffing can help create a rough texture for better adhesion.
It is worth mentioning that some users have reported successful applications of POR15 over painted surfaces without any issues. However, others have experienced lifting or delamination of the product. The variability in outcomes highlights the importance of following the manufacturer's instructions and recommendations for surface preparation.
While POR15 provides excellent rust protection, it is not UV-resistant. Therefore, it is essential to apply a top coat over the POR15 to protect it from UV rays and sunlight exposure. This additional step can help prevent discoloration and degradation of the POR15 coating.
In summary, while it is possible to apply POR15 over a painted section, there is a risk of future lifting due to its design for bonding with rusted surfaces. Adequate surface preparation and the application of a top coat are crucial steps to enhance adhesion and protect the POR15 from UV damage. By following these measures, users can improve the likelihood of successful and long-lasting results.
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It can be sprayed, but slowly
POR-15 is a rust-preventive coating that can be used on cars and other vehicles to prevent rust. It is designed to be painted over a cleaned, rusted surface, as the chemical reaction with rust is part of the bonding process.
While it can be applied over painted areas, it is not recommended as the paint may lift in the future, causing the POR-15 to come off with it. This is because POR-15 is designed to ''bite' into rust and bare metal, not paint. Therefore, it is important to prepare the surface by removing any existing paint and rust before applying POR-15. This can be done by using a wire wheel to knock off loose dirt, paint, and rust, and then using a product like Marine Clean to degrease the surface, followed by Metal Prep to prepare the surface for painting.
Once the surface is prepared, POR-15 can be applied. It can be brushed or sprayed on, but if spraying, it is important to work slowly as the formula is impossible to clean off. It is also important to note that POR-15 should not be shaken before use, but rather stirred gently. After application, a top coat is recommended to protect the POR-15 from UV rays, which can break it down.
Overall, while it is possible to paint over POR-15, it is essential to follow the proper preparation and application procedures to ensure its effectiveness in preventing rust.
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It's strengthened by exposure to moisture
POR-15 Rust Preventive Coating is a unique product that differs from other rust treatments, paints, and conversion products on the market. While all paints offer some protection, they are eventually weakened and softened by exposure to moisture, which will then penetrate the painted surface and cause rust.
The POR-15 coating, however, is strengthened by exposure to moisture. Its unique curing process means that it dries faster when moisture is present. This curing process, along with its incredible hardness, toughness, and flexibility, creates a coating that is practically indestructible. Its hardness will resist the wear and tear of everyday life, and it won't crack, chip, or peel like ordinary paints.
The POR-15 coating is designed to be painted over a cleaned, rusted surface. The chemical reaction with the rust is a part of the bonding process, and it is this chemical bonding that forms a rock-hard, non-porous coating. The coating is also non-conductive, making it ideal for EV conversion applications.
It is important to note that POR-15 should not be used on top of existing paint. While it can be applied in this way, the paint may lift in the future, causing the POR-15 coating to come off with it. Additionally, a top coat is required to protect the POR-15 coating from UV rays, which will break it down.
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Frequently asked questions
Yes, POR-15 is not dangerous if you follow the directions provided. However, it is important to always paint in a well-ventilated area and avoid inhaling the vapors.
Yes, it is possible to apply POR-15 over existing paint. However, it is important to properly prepare the surface by cleaning and roughening the paint to ensure adhesion. It is also recommended to use a top coat to prevent discoloration and protect the POR-15 from UV exposure.
POR-15 is designed to adhere to bare metal, especially rusty surfaces. It can also be applied to seasoned or sandblasted metal.
To prepare a surface for painting with POR-15, it is recommended to use a prep wash or a product like Marine Clean to degrease the surface. Then, use a product like Metal Prep or Metal Ready to prepare the surface for painting. Finally, ensure the surface is clean and dry before applying POR-15.
