Case Study: Effective Remediation of Water Damage and Mold in a 2019 Subaru Crosstrek

September 14, 2024

AC drainage issues can pose the tricky problem of sneaky vehicle water damage, turning your car into a breeding ground for mold, causing health risks. Oftentimes, water improperly drains onto the super absorbent padding on the underside of the interior carpets. This problem normally occurs after a blockage in the AC outlet hose, when the hose is shifted out of place, or with kinks or bends in the hose, leaking water inside of the vehicle. This enclosed, waterlogged carpet is a source of moisture, creating the perfect place for mildew, mold and bacteria growth. 

The dark, humid environment of a car, especially under the carpet, provides ideal conditions for mold spores, which are present everywhere in the air to settle, grow and thrive. The absorbent carpet fibers and padding act like a sponge, absorbing and retaining moisture. This trapped water, combined with the lack of airflow and sunlight under the carpet, creates the perfect environment for mold to multiply rapidly, often undetected until a musty odor becomes noticeable, if not unbearable.

A person wearing blue gloves is cleaning the interior of a car folding over the carpet to reveal sound deadening padding

We were presented with a 2019 Subaru Crosstrek, where the customer had claimed to have absorbed the moisture left from the AC leakage using a wet vac. When the vehicle came in, we noticed standing moisture coming from the area of concern, underneath the passenger seat, by wicking our glove on the surface. The smell of waterlogging was present along with a musty, mildewy scent. 


By the smell of standing water, mildew and the presence of moisture on the surface of the carpets that hadn’t subsided after weeks, we diagnosed that the carpet had water damage that we would have to further investigate. After disconnecting the battery, we removed the trim, front and back seats, and lifted both the driver and passenger side of the carpets in order to assess the level of damage. There was no pooling of water present, but we noticed a large amount of water absorbed into the underside of the carpet. When wrung out by hand, a few ounces of water spilled out of the carpet with little effort. 

This water absorbed into the padding had reached all the way to the underside of the driver’s seat and required extraction of the entire carpet.


Because we could access the entire carpet and extract the moisture, we were able to salvage the carpet without requiring a replacement. Using an industrial grade extractor, the Mytee HP90 Stingray Heated Carpet Extractor, we were able to get the carpet and underpadding dry to the surface, removing the excess moisture from the vehicle. The heated function of this extractor is crucial as it not only speeds up the drying process but also helps to kill mold spores more effectively.

A few steps were taken to stabilize the levels of mildew inside of the vehicle, including using a mold inhibitor on these carpets, including the underside where water damage was present and the chassis of the vehicle where the carpet made contact with the vehicle. With the use of industrial air movers, we were able to dry both sides of the carpet before reassembly. 

A super fan sits in a car

All surfaces, plastics, upholstery and seats were steamed and treated with mold treatment. This combination eliminated musty odors in the process by killing the source. Once treated, seats, carpets and trim were clipped back into place. Upon reconnecting the battery, we ran the heat to finish drying the vehicle and ran an ozone generator, recirculating through the vents to kill any remaining spores and eliminate odors. 


After using the machine, we conditioned all plastics in order to revive the oxidized surfaces. 


Each step of the process in water damaged cars plays a large role in effective remediation. The vacuuming step, for example, is as important as the mold removal process, because eliminating organic matter and food particles inside of the vehicle creates a lesser chance for the recurrence of mold or mildew. Leaf debris for example, can decompose, providing a food source for mold spores. 


When a vehicle has a history of mold, we always recommend to minimize food and moisture inside of the vehicle. Routine cleaning also prevents the recurrence of the issue, removing bacteria and minimizing spore accumulation and the accumulation of other microorganisms. 


Each vehicle is handled on a case by case basis and may need to be treated differently. For this approach, when extracting the carpets, it made sense to use minimal amounts of water when doing

 a heated extraction to prevent the reintroduction of moisture. This vehicle showed improvement between this level of extraction, steaming and mildewstat treatment. In other cases, with more persistent smells, or visible mold rather than mildew, more intensive cleaning and extraction may be necessary to fully remedy the issue, along with longer drying time.


When performing mildew or mold removal, it is important to address all the surfaces that the spores may have come into contact with, even if there is no smell or visible indicators of contamination present. This provides the best chances to prevent future infestation. For this vehicle, we ensured headliner, vents, trim, plastics, windows, etc. were treated and processed thoroughly through multiple levels of remediation methods to ensure that spores were minimized as much as possible.


Other Considerations


When using the air pushers, it is important to move the air in harder to reach areas like corners and under trims, (e.g. under center console) to prevent fungal growth in hidden areas. We also recommend moving the direction of the air frequently in order to avoid any missed spots where carpets could still be holding moisture.


With the use of the ozone machine, we recommend drying the vehicle first and removing any air fresheners in order to best target the mold and mildew smells.


Mold emits harmful VOC and should be treated as a major health hazard. We always recommend using the appropriate PPE when handling mold, including masks, goggles, protective gloves and suits. Failure to use the proper equipment can result in lung damage, respiratory illness or other mold related disease.


Always Consult A Pro


This case study is created for illustrative purposes only, and should not serve as a guide for at home mold remediation. Attempting to handle mold infestation without proper training, equipment, and safety precautions can pose serious health risks. Mold spores can become airborne during cleaning, leading to inhalation and potential respiratory problems, especially for individuals with allergies or sensitivities. If you suspect mold growth in your vehicle, it's crucial to
consult with a qualified mold remediation professional. They can provide a thorough assessment, develop a safe and effective remediation plan, and help you restore your vehicle to a healthy and odor-free environment.

March 24, 2025
Acidic cleaners represent a critical category of professional detailing products, operating below pH 7 on the chemical scale. These specialized solutions play an essential role in modern detailing but require proper understanding and handling protocols. This guide provides comprehensive information for professional detailers and serious enthusiasts about the effective and safe use of acidic cleaning products. Understanding the Chemistry Professional-grade acidic cleaners function through specific chemical reactions that target inorganic contaminants. These products are particularly effective at: Dissolving mineral deposits Breaking down iron contamination Removing brake dust Treating oxidation Eliminating water spots Common Uses for Acid in Professional Detailing Wheel Cleaners Acid based wheel cleaners are a popular choice in car detailing because of their powerful ability to clean wheels and brakes. Acidic wheel cleaners are specifically formulated to tackle brake pad deposits, rust, and other stubborn contaminants found on rims and hubcaps. They commonly contain strong acids with a pH around 1 . Caution is advised when using acid on wheels. Improper use can result in severe damage to wheel finishes, particularly on polished, chrome, or aluminum surfaces. It’s important to keep an eye on dwell time of the chemical and to ensure that it is not being dried on the surface or kept in direct sunlight. These chemicals can damage paint and glass if not used properly. Fall Out Removers Fall out removers with a neutral pH are normally recommended for ongoing paint and wheel maintenance. While they are less aggressive than acidic cleaners, they offer similar benefits when decontaminating wheels and paint with less risks of degradation of surfaces or misuse. Gentle acidic products like Crystal Wash by P&S can be used for removing inorganic contaminants like metal filings and rust, while also addressing limescale and water spots on windows and paint surfaces. Benefits of Using Acidic Chemicals When Detailing Acids are effective in removing mineral deposits, like water spotting, rust and other inorganic residues. Most water spot removal chemicals are a form of a gentle acid capable of breaking down calcium and salt deposits that occur during the winter. When using a water spot remover, we always recommend following the instructions on the chemical. Wash the panel off after use of the chemical to ensure there are no residues left over. A variety of shampoos designed for unclogging ceramic coatings sit at a pH slightly below 7. Using acids in turn requires less agitation for a deeper clean of wheels or a ceramic coating, preserving the surface, avoiding scratches or premature aging of the materials. Potential Risks of Using Acids on Cars While acidic chemicals offer numerous benefits for car detailing, using these chemicals requires caution. Acidic cleaners can harm vehicle finishes, especially if they come into contact with paint or anodized aluminum surfaces. Some acidic products contain hazardous substances that can pose serious health risks, such as skin irritation or respiratory issues, necessitating the use of protective equipment during application. Protective gear, such as gloves and goggles, should always be worn to safeguard against splashes, and it is advisable to conduct a spot test on inconspicuous areas to ensure compatibility with the surface being cleaned.
By Ana B. March 20, 2025
Parking garages can be challenging environments for your vehicle, with tight spaces, low ceilings, and the risk of accidental damage. Whether it's a minor scratch or a more significant dent, knowing how to assess and address the damage is crucial. This article will guide you through identifying common types of damage, understanding when professional help is needed, and learning how to prevent future incidents. Common Types of Damage in Parking Garages 1. Scratches: These are often caused by other vehicles brushing against your car. Scratches can range from superficial to deep, potentially affecting the paint or even the metal beneath. 2. Dents: Dents occur when another vehicle collides with your car, often during parking maneuvers. These can vary in severity, from small dents to more extensive damage. 3. Paint Transfer: This happens when another car's paint transfers onto your vehicle, usually due to a minor scrape or bump. While not as severe as other types of damage, it can still be unsightly. Assessing the Damage If your car is damaged in a parking garage, the first step is to assess the extent of the damage. Here's how to do it: Check for Paint Transfer: If you notice a different color on your bumper or another part of your car, it could be paint transfer. This is often a sign of a minor scrape. Inspect for Scratches: Run your hand over the affected area to feel for scratches. If the paint is rough or uneven, it may require touch-up. Look for Dents: Examine the body of your car for any dents or depressions. These can be a sign of a more significant impact. Check for Primer or Plastic Exposure: If the damage has exposed the primer or the underlying plastic, it indicates more severe damage that likely requires professional repair. When to Seek Professional Help Exposed Primer or Plastic: If the paint has been removed and the primer or plastic is visible, a professional touch-up or respray is necessary. Severe Scratches or Dents: Deep scratches or large dents should be addressed by a professional to prevent further damage or rust. Uncertain Damage: If you're unsure about the extent of the damage, it's always safer to consult a professional. Repairing Parking Garage Damage 1. Paint Touch-Up: For minor paint transfer or scratches, a paint pen can be used to touch up the affected area. Ensure you use a color that matches your car's paint. Follow these steps: - Clean the area thoroughly. - Lightly sand the edges of the damage to blend the paint. - Apply the touch-up paint in thin layers. - Allow each layer to dry before applying the next. - Finish with a clear coat if necessary. 2. Paint Correction and Polishing: For lighter scratches, paint correction using fine abrasive materials can smooth out the surface. Polishing will then restore the shine. 3. Dent Repair: Depending on the severity, dents can be repaired using paintless dent repair (PDR) for minor dents or traditional body work for more significant damage. Preventing Damage in Parking Garages To minimize the risk of damage, consider the following tips: Park Strategically: Choose a spot that offers enough space to maneuver without risking contact with other vehicles. Avoid Tight Spaces: If the space is too tight, it's better to find another spot to park. Use Sensors: If your car has parking sensors, rely on them to help judge distances accurately. Be Cautious When Backing Out: Take your time and check your surroundings before reversing. Consider Protective Covers: Using protective covers can add an extra layer of defense against minor scratches and dents. Insurance and Legal Considerations If the damage was caused by another driver, consider filing a claim with your insurance company. Document the incident with photos and contact information from the other party. If the parking garage management is responsible, they may have liability insurance to cover the damage. Dealing with parking garage damage can be frustrating, but with the right knowledge and approach, you can address the issue effectively. By assessing the damage accurately, knowing when to seek professional help, and taking preventive measures, you can protect your vehicle and maintain its appearance. Remember, a proactive approach can save you time, money, and hassle in the long run.
February 11, 2025
Detonation nanodiamonds (DNDs) are more than just a scientific curiosity—they’re a groundbreaking material with the potential to transform industries ranging from automotive coatings to biomedicine . Born from controlled explosions , these tiny diamond crystals are reshaping how we think about durability, performance, and innovation. In this article, we’ll dive deep into the science, history, and applications of DNDs, offering a complete resource for anyone interested in this fascinating field. What Are Detonation Nanodiamonds? The Basics of DNDs Detonation nanodiamonds are tiny diamond particles, typically 3–5 nanometers in size, created by detonating explosives with a negative oxygen balance, like as a mixture of trinitrotoluene (TNT) and hexogen (RDX)in a controlled environment . The carbon atoms in the explosives rearrange into a diamond’s signature sp³ carbon lattice structure , giving DNDs their exceptional hardness and durability. Despite their small size, these particles pack a punch, offering unique properties that make them invaluable in a variety of applications.
More Posts