23/08/2017
For many car enthusiasts and diligent vehicle owners across the UK, the battle against rust is a perennial challenge. The insidious creep of corrosion, particularly in hidden areas like floor pans and boot floors, can compromise a vehicle's structural integrity, detract from its value, and even lead to MOT failures. While traditional repairs often involve costly and complex welding, a revolutionary solution exists that promises to save you both time and money: the POR-15 Floor Pan & Trunk Restoration Kit. This kit is not just a temporary fix; it's designed to provide a durable, rust-proof finish that can outlast the original metal, ensuring your beloved vehicle remains solid for years to come.

Understanding the threat of rust is the first step in appreciating the value of a comprehensive restoration kit. Rust, or iron oxide, forms when iron or steel comes into contact with oxygen and moisture. This process weakens the metal, leading to perforations and a significant reduction in structural strength. For a vehicle, this can mean anything from an uncomfortable ride due to weakened chassis components to severe safety risks. Traditional methods of repair, such as cutting out rusted sections and welding in new metal, are effective but require specialised skills, equipment, and can be prohibitively expensive. This is where the POR-15 system shines, offering an accessible and superior alternative.
- What Exactly is the POR-15 Floor Pan & Trunk Restoration Kit?
- Why Choose POR-15 Over Traditional Repair Methods?
- The POR-15 Restoration Process: A Step-by-Step Guide
- Typical Applications and Beyond
- POR-15 vs. Traditional Welding/Patching: A Comparison
- Frequently Asked Questions about POR-15 Restoration
- Q: Do I need to remove all the rust before applying POR-15?
- Q: Can I paint over POR-15?
- Q: How long does POR-15 last?
- Q: Is POR-15 difficult to apply for a beginner?
- Q: What if my floor pan has large holes?
- Q: How much product will I need for a typical car floor pan?
- Q: Can I use POR-15 on non-rusted metal?
- Conclusion
What Exactly is the POR-15 Floor Pan & Trunk Restoration Kit?
The POR-15 Floor Pan & Trunk Restoration Kit is a meticulously assembled package designed to equip you with everything needed to tackle rust and restore metal surfaces without the need for welding or extensive fabrication. The core promise of this kit is to encapsulate existing rust and prevent new corrosion from forming, creating a permanent, non-porous barrier. The 'POR' in POR-15 stands for 'Paint Over Rust', which succinctly describes its primary function. Unlike conventional paints that simply cover rust, POR-15 chemically bonds with the rusted surface, transforming it into a hard, durable, and completely non-porous coating that acts as an impenetrable barrier against moisture and oxygen.
While the exact contents may vary slightly, a typical POR-15 kit for floor pans and boot areas will usually include:
- POR-15 Cleaner Degreaser: An essential first step for preparing the surface, removing grease, oil, and other contaminants to ensure optimal adhesion of subsequent coatings.
- POR-15 Metal Prep: This product etches the metal, leaving a zinc phosphate coating that promotes superior adhesion of the POR-15 rust preventative coating. It also neutralises rust, converting it into an inert form.
- POR-15 Rust Preventive Coating: The star of the show. This unique coating forms an incredibly tough, chip-resistant, and flexible barrier that stops rust in its tracks. It's renowned for its exceptional adhesion and durability.
- Application Brushes/Rollers: To facilitate easy and even application of the products.
- Safety Gear: Often includes gloves to protect your hands during the process.
- Detailed Instructions: Step-by-step guidance to ensure a successful restoration, even for first-time users.
The beauty of this comprehensive kit lies in its simplicity and effectiveness. It eliminates the guesswork and ensures you have all the necessary components for a professional-grade repair right at your fingertips.
Why Choose POR-15 Over Traditional Repair Methods?
The benefits of opting for a POR-15 restoration kit over conventional welding or patching are numerous and compelling, particularly for the DIY enthusiast or those seeking a more permanent solution.
Cost-Effectiveness and Time Savings
Perhaps the most immediate advantage is the significant financial saving. Welding and fabrication work, especially for rusted floor pans, can quickly escalate into hundreds or even thousands of pounds when factoring in labour costs. The POR-15 kit, by contrast, offers a fraction of that outlay. Furthermore, the time saved is substantial. While welding requires cutting, shaping, and precise fitting, the POR-15 process is largely about preparation and application, meaning your vehicle can be back on the road much quicker.
Superior Rust Prevention and Durability
Unlike simply patching over rust, which often leads to its re-emergence, POR-15 actively encapsulates and neutralises it. The coating forms an incredibly tough, non-porous, and flexible shell that is resistant to chemicals, fuels, acids, and road salt. This means the repaired area will be far more resistant to future corrosion than the original metal, offering a level of durability that traditional methods often struggle to match.
Ease of Application and DIY Accessibility
One of the most appealing aspects for the home mechanic is the relative ease of application. The kit comes with clear, step-by-step instructions, making it a highly DIY-friendly solution. You don't need specialist welding skills or heavy machinery; basic hand tools and a keen eye for detail are usually sufficient. This accessibility empowers vehicle owners to take charge of their own repairs, fostering a sense of accomplishment and further reducing costs.

Maintaining Structural Integrity
By coating and strengthening the existing metal, even if perforated, the POR-15 system helps to maintain the vehicle's original structural integrity without altering its design. This is crucial for classic cars or those where preserving originality is paramount. There's no need for cutting out large sections, which can sometimes weaken surrounding areas or be difficult to replicate perfectly.
The POR-15 Restoration Process: A Step-by-Step Guide
Achieving optimal results with your POR-15 kit hinges on meticulous preparation and adherence to the instructions. While specific drying times and steps may vary slightly depending on temperature and humidity, the general process is as follows:
Assess and Prepare the Area:
Begin by thoroughly inspecting the floor pan or boot area. Remove any loose dirt, debris, carpets, and sound deadening materials. Use a wire brush, grinder, or sandpaper to remove any loose, flaky rust. The goal is to get down to solid, stable metal, even if it's pitted with rust. POR-15 adheres best to a rusted, porous surface, but active, loose rust needs to go.
Clean and Degrease:
Apply the POR-15 Cleaner Degreaser generously to the entire area. This powerful cleaner will break down and remove oil, grease, wax, and other contaminants that could hinder adhesion. Scrub thoroughly with a stiff brush and rinse completely with water. Ensure the surface is completely dry before moving to the next step. Using a shop vac or compressed air can speed up drying.
Apply Metal Prep:
Once dry, apply the POR-15 Metal Prep. This crucial step etches the metal surface, creating a microscopic profile that allows the POR-15 coating to bond securely. It also converts any remaining surface rust into an inert phosphate coating. Keep the surface wet with Metal Prep for at least 20-30 minutes, ensuring it doesn't dry out. Then, rinse thoroughly with water and allow the surface to dry completely. A clean, white, powdery film may be visible, which is normal and desirable.
Apply POR-15 Rust Preventive Coating:
Stir the POR-15 coating thoroughly (do not shake). Apply a thin, even first coat using a brush or roller. Avoid over-applying, as thicker coats can lead to runs or slower curing. POR-15 cures by reacting with moisture in the air, so good ventilation is important. Allow the first coat to dry to a firm, tacky state – typically 2-6 hours, but check instructions. It should be dry enough that you can touch it without it coming off on your finger, but still slightly tacky. Apply a second coat in the same manner. For heavily pitted areas or maximum protection, a third coat can be applied after the second coat has dried to a similar tacky stage.
Curing and Topcoat (Optional but Recommended):
POR-15 cures to an incredibly hard finish. While it is extremely durable, it is not UV stable and can fade or chalk if exposed to direct sunlight for prolonged periods. For areas that will be exposed to UV light (e.g., a truck bed that is not covered), it is highly recommended to apply a topcoat of a UV-stable paint within 24 hours of the final POR-15 coat. This could be a chassis black, body colour, or any other appropriate automotive paint. If more than 24 hours pass, the POR-15 surface may need to be scuffed lightly to ensure good adhesion for the topcoat.
Typical Applications and Beyond
While the kit is specifically named for floor pans and boot (trunk) restoration, the versatility of the POR-15 system extends to numerous other areas susceptible to rust. It's an excellent solution for:
- Pickup Truck Beds: Providing a durable, chemical-resistant liner.
- Chassis Components: Frame rails, suspension arms, and other underbody parts.
- Fender Wells: Protecting against stone chips and road salt.
- Battery Trays: Preventing acid corrosion.
- Any Metal Surface: That requires superior rust protection and a tough, durable finish.
The key is that the POR-15 coating forms a bond with the metal itself, creating a protective layer that is far superior to many conventional rust treatments.
POR-15 vs. Traditional Welding/Patching: A Comparison
To further illustrate the advantages, let's compare the POR-15 kit with the traditional method of cutting out and welding in new metal sections:
| Feature | POR-15 Floor Pan & Trunk Kit | Traditional Welding/Patching |
|---|---|---|
| Cost | Significantly lower (kit price + basic tools) | High (materials + specialist labour/equipment) |
| Skill Required | Low to Moderate (DIY-friendly, follow instructions) | High (welding, fabrication, bodywork skills) |
| Time Commitment | Moderate (preparation, multiple coats, drying time) | High (cutting, shaping, welding, grinding, finishing) |
| Rust Prevention | Superior (encapsulates, chemically bonds, non-porous barrier) | Good (new metal, but new seams can be weak points) |
| Durability | Exceptional (chip, chemical, abrasion resistant) | Good (quality of weld and new metal) |
| Structural Integrity | Maintains original structure, strengthens existing metal | Replaces sections, requires careful alignment |
| Tools Needed | Wire brush, sandpaper, basic brushes/rollers, safety gear | Welder, grinder, cutting tools, clamps, body hammers, etc. |
| Safety Risks | Fumes (ventilation crucial), skin contact (gloves) | Fire, electric shock, fumes, burns, eye damage |
| Finish Appearance | Hard, smooth, black (can be top-coated) | Seamless (if done by skilled professional) |
Frequently Asked Questions about POR-15 Restoration
Here are some common queries that often arise when considering a POR-15 restoration:
Q: Do I need to remove all the rust before applying POR-15?
A: No, in fact, POR-15 prefers a rusted surface to bond with. You only need to remove loose, flaky, or actively scaling rust. Pitted or surface rust is ideal, as the coating chemically reacts with it to form a super-strong bond.

Q: Can I paint over POR-15?
A: Yes, absolutely! While POR-15 is incredibly durable, it is not UV stable and can fade or chalk if exposed to direct sunlight. For visible areas, or areas exposed to UV, it's highly recommended to apply a topcoat of any automotive paint within 24 hours of the final POR-15 coat for UV protection and aesthetic finish.
Q: How long does POR-15 last?
A: When applied correctly, POR-15 forms a permanent, inseparable bond with the metal. It's designed to be a long-term solution, offering exceptional durability and rust prevention that can last for many, many years, often outliving the surrounding original metal.
Q: Is POR-15 difficult to apply for a beginner?
A: Not at all. The kit comes with clear, easy-to-follow instructions. The most crucial part is the preparation, ensuring the surface is clean and properly etched. The application of the coating itself is straightforward, similar to painting. With patience and attention to detail, even a novice can achieve professional-looking results.
Q: What if my floor pan has large holes?
A: While POR-15 is excellent for encapsulating and strengthening pitted or partially rusted areas, it is not a filler for large holes. For significant perforations, you may still need to patch the hole with new metal before applying the POR-15 system over the entire area to ensure a truly permanent and strong repair.
Q: How much product will I need for a typical car floor pan?
A: The POR-15 Floor Pan & Trunk Restoration Kit is typically sized to cover a standard floor pan or boot area. Always check the kit's coverage specifications, but it's generally designed to provide sufficient material for the intended application with multiple coats.
Q: Can I use POR-15 on non-rusted metal?
A: Yes, you can. However, for optimum adhesion on non-rusted, smooth metal, it's even more critical to use the Metal Prep step thoroughly. The Metal Prep creates the necessary profile for the POR-15 to bond effectively. For new, shiny metal, some light scuffing with sandpaper before Metal Prep can also be beneficial.
Conclusion
The POR-15 Floor Pan & Trunk Restoration Kit represents a true game-changer in automotive rust repair. It offers a cost-effective, DIY-friendly, and incredibly durable solution that goes far beyond simply covering up the problem. By chemically bonding with and encapsulating rust, it creates a permanent barrier that prevents future corrosion, maintaining the structural integrity of your vehicle's most vulnerable areas. Whether you're a classic car enthusiast looking to preserve originality or a daily driver owner seeking to extend the life of your vehicle, investing in a POR-15 kit means investing in the long-term health and safety of your car. Say goodbye to the endless battle with rust and hello to a solid, revitalised ride.
If you want to read more articles similar to Revitalise Your Ride: POR-15 Floor Pan Kit, you can visit the Restoration category.
