Undercoating in Fairfax, Virginia

Rust Prevention

It is important to protect your car or truck from the elements.  Automotive Protection Services - Fairfax Virginia provides the highest quality undercoating & rustproofing service on the market. We exclusively use Noxudol products imported from Sweden and we back our services with a 10 year written warranty to ensure your peace of mind. Our process has been developed over decades and continuously refined as vehicle manufacturers adopt new manufacturing techniques and methods.  One thing has remained constant throughout the years - metal, when exposed to air and moisture, will oxidize, and salt will accelerate that process.  Without proper care and attention, like undercoating and rustproofing all vehicles will corrode, given time. 

Reach out to our automotive protection shop for more information about all of our rust prevention services and vehicle protection services.

A Guide to Rust Prevention for Fleet Owners

Learn more about the effects rust has on your fleet and how you can mitigate the damages.

A Guide to Rust Prevention

The very first step of any proper undercoating job is to clean the underside of your vehicle, remove all of the road grime, salt, brine, mud, and sand. Then we put your vehicle on our four-post drive-on lift. Once in the air, we shine our bright lights underneath and look inside all of the crevices to ensure that we have cleaned out all of the contaminants.

We start the undercoating process by applying cavity wax (similar to Fluid Film) inside your frame and floor pan. The cavity wax is a proprietary formula supplied by Noxudol. Then we mask off the areas of your vehicle that the undercoating chemical will not be applied to - shocks, breaks, drive-shaft, and exhaust system. We apply a thick coating of undercoating to your frame rails, floor pans, rocker panels, wheel wells - everything on the underside of your vehicle that doesn't move or get hot. The undercoating is a proprietary formula supplied by Noxudol, it bonds with the cavity wax to form a seal that keeps moister out while protecting your vehicle's undercarriage. Noxudol backs the process with a Ten-Year written warranty (see store for details).


Rustproofing involves applying cavity wax (similar to Fluid Film) inside the upper sheet metal of your vehicle. Once applied, it seals out air and moisture which contributes to the formation of rust. We apply our rustproofing cavity wax inside the door panels, rocker panels, tailgates, trunk lids, and inside the hood.

Our rustproofing cavity wax is an impressive product that, along with regular maintenance, will ensure a rust-free body for your vehicle - the product is backed by a ten-year written warranty by Noxudol.

If you'd like to protect your vehicles upper sheet metal against the formation of rust there is no better option on the market today than a Noxudol cavity wax application.

Rust Eliminator

Rust eliminator (AKA rust converter and similar to POR-15) is a tannic, acid-based product that can restore a rusty metal to a stable compound. We recommend the use of rust eliminator in conjunction with the physical removal of rust scale on a vehicle that is experiencing rust in order to arrest its progress. Once rust eliminator is applied, the chemicals are active and take time to cure (typically 8-12 hours). Once the rust eliminator has fully cured, the metal is ready to be undercoated—leaving it protected against further corrosion.

Contact us to make sure rust doesn’t get a foothold on your vehicle’s body. Our rust protection is available for car owners located throughout the mid-Atlantic region.

Undercoating Options - Woolwax vs. Noxudol

You have options when protecting your vehicle against the formation of rust. At APS in Fairfax, Virginia, we offer two high-performance options.

Woolwax® Rust Prevention Undercoat

Woolwax® is Lanolin (wool-wax) based, solvent-free corrosion preventive designed for use on any known metal. Woolwax® has a thixotropic viscosity that allows for a thick and drip-free coating. Woolwax® leaves a soft, grease-like self-healing film that is applied with a spray applicator gun. Woolwax® will not dry out. It will penetrate metals to the base, providing corrosion protection in highly corrosive atmospheres like those found in Virginia and the mid-Atlantic. Woolwax® is an exceptional vehicle undercoating product.

Noxudol 900

Noxudol is a superior line of undercoatings and rust-proofing products manufactured and engineered to provide excellent protection to all motor vehicles. For decades Europe's leading automotive manufacturers have relied on the advantages of Noxudol products to provide unrivaled rust protection on their new vehicles. The combination of Noxudol cavity wax and Noxudol 900 working in concert to protect your vehicle's exposed metal is unrivaled in the marketplace.

What is the difference between Woolwax® and other undercoating options like Noxudol 900?
Woolwax®Noxudol 900
Woolwax® is made from lanolin/wool grease and applied clear. It is solvent-free, odor-free, safe, non-hazardous, and environmentally friendly.Noxudol is a thixotropic, chemically stabilized product consisting of bitumen, waxes, rust inhibitors, and solvents, applied black, the odor that dissipates over time (30 days).
Woolwax® is applied annually to the vehicle undercarriage.Noxudol does not require an annual re-application – annual maintenance is strongly encouraged and obligatory to maintain the warranty.
Woolwax® does not dry when applied, it will create a wet gel-like barrier that moisture and oxygen cannot penetrate.Noxudol dries to the touch and forms a thick protective barrier against moisture and oxygen.
Woolwax® can be applied over existing surface rust, it is not a rust remover or converter. Any heavy bubbling or flaking rust should be brushed off before applying Woolwax®.Noxudol should not be applied over existing rust. Rusted areas must be remediated and treated with a converter before application.
Woolwax® is non-drying and will attract an initial coating of sand/dirt. Anything that may adhere can easily be rinsed off with a low-pressure garden hose.

Noxudol dries to the touch and will not attract sand/dirt.

How often does my vehicle need to be undercoated?

Woolwax® must be reapplied annually to achieve the best results and performance.

Noxudol strongly recommends an annual inspection service to address any areas where the coating may have scoured over the course of a year – this service is quick and inexpensive.

Schedule Service

The very first thing that we're going to do is clean the whole underside of your vehicle - remove all the road grime, road salt, brine and pre-treatment, mud, grease - anything that contributes to corrosion. Then we'll put the vehicle on our four-post drive-on lift, put it up in the air and dry the underside of the vehicle with our high-pressure air system. Then we'll apply a thick coating of our abrasion-resistant undercoating to the underside of the vehicle, the floor pans, frame rails, rocker panels - everything on the underside of your vehicle that doesn't move or get hot (like your exhaust system, drive train or shocks).
For a new vehicle - we recommend leaving it with us overnight to allow adequate time for the undercoating to thoroughly cure. For vehicles that require rust remediation work - the process can take a couple of days. (Please call or email).

Military and First Responders Discount: 10% (all initial services)

Thank you for your service

  • Choose the service that fits your needs
  • Day of the week and the time that fit your schedule.
  • Pay for the work when you pick up your vehicle after you've seen the work and approve of its quality.
  • We have a night drop slot and after-hours drop off options.
  • We hope to see you and your vehicle soon.

    Schedule Service

FAQ's about Undercoating

Questions customers ask us frequently: Undercoating

1.  Will undercoating void my warranty?

No, undercoating & rustproofing will not void your manufactures warranty. It's designed to work with your warranty, protecting critical parts like your frame and floor pan. Here is a link that provides some additional information

2. How do you apply the undercoating?

The very first thing that we do whenever we apply undercoating is clean the whole underside of the vehicle - we remove all dirt, mud, salt, chemicals, grease, everything that contributes to corrosion. Then we put the car up in the air using our four-post drive-on lift. Once in the air, we dry the underside of the vehicle using our high-pressure air system. Then we remove the spare tire (if it's located under the vehicle). Then we mask off the parts of the vehicle that we're not spraying (exhaust system, drive shaft, shocks). Then we spray the whole vehicle with a thick coating of undercoating - frame rails, floor pans, rocker panels, wheel wells, etc. Then we set it aside and allow the chemical to properly cure.

3. I've heard undercoating can cause rust - is that true?

No, undercoating does not cause the formation of rust. Rust a chemical reaction when iron (part of steel) oxidizes. Undercoating helps to prevent this from happening by creating a barrier between the metal and environment surrounding it.

4. Cars and trucks don't rust anymore so I don't really need undercoating, do I?

False, Cars and trucks do rust, while automobile manufacturers have made great strides in reducing rust occurrences they've not eliminated them. See this link for more information

5. When should I get my vehicle undercoated & rustproofed?

The most cost-effective time to undercoat your vehicle is when it's brand new. Once your vehicle has shown signs of rust it will be most expensive to remediate.

6. If my vehicle already has rust it's too late, isn't it?

No, it's not too late at all - we do have a process to remediate the rust - it involves the use grinders wire wheels, wire-bristle brushes, and the use of rust eliminator (like rust converter or POR-15) chemical. The process works and can be an excellent option after the purchase of a pre-owned vehicle.

7. I thought this was just something dealers use to pad their sale, but it doesn't really work, right?

It does work if it's applied correctly.

8. What is undercoating made of?

The undercoating we use in this shop is manufactured by Noxudol - it's a solvent-based product. The particulars of their product are a trade secrete.

9. Is there a warranty with the product/service?

Yes, we offer a ten-year warranty for qualifying vehicles - less than 36 months and 36,000 miles from the date of manufacturer.

10. How much will it cost for my vehicle?

Prices vary depending on the size, and condition - please contact our shop or fill our quote request form