Prefer to talk? Call 1-855-OIL-RUST or (603) 491-9012. Not near Chichester? Find an NHOU® authorized applicator.
Experience cutting-edge vehicle protection with our new V3 coating—
the latest breakthrough in advanced rust protection.
Protect your vehicle from rust and corrosion with our advanced prevention solutions—
shielding your car from moisture, road salt, and pollutants to preserve its value.
Remove up to 95% of rust with our Rustoration treatment.
Get annual maintenance and secure a transferable lifetime warranty for your vehicle!
Introducing our eco-friendly Mil-Spec Wax/Oil combo for new vehicles—
water-based, long-lasting, semi self-healing rust prevention with a nationwide lifetime transferable warranty!
BOOK RUSTPROOFING AT OUR CHICHESTER, NH FLAGSHIP
Oil Undercoating & Rustproofing in Chichester, NH
Proud to offer NHOU® “The Good Stuff”! NHOU® protective coatings are the fastest, least expensive way to add value to your vehicle, sealing out corrosives and eliminating rust.
1-855-OIL-RUST
Call 1-855-OIL-RUST today to make an appointment, whether you want to get ahead of rust or you already have rust and want to correct the problem before it gets out of hand. It pays to be proactive! We value your business and look forward to helping you extend the life of your vehicle.
ENVIRONMENTALLY FRIENDLY
Thixotropic liquids and gels have been used for over 55 years in the highly corrosive marine environment of ships and oil drilling rigs. They provide an environmentally friendlier solution for vehicle maintenance, and our material is solvent-free!
HIGH SALT DIET?
What’s it costing you? Road salt and liquid de-icers attack your vehicle’s frame, brake lines and body seams, and rust damage can wipe out much of its value. Protecting it now costs far less than repairing it later.
NHOU® DEFY THE ELEMENTS!
An annual visit to one of our NHOU rustproofing dealers means your vehicle will look better, last longer, keep a higher resale value and even be safer to drive. Treating your vehicle with NH Oil Undercoating® also saves you money by reducing repair costs and lengthening its life. To top it all off, we offer our customers peace of mind by using only environmentally friendly products.
- Fast Curing
- Eco-Friendly
- Powerful
- Repels Dirt
- Heavy Duty
- Displaces Moisture
NHOU® CARFAX REPORTS
All NHOU® services are reported to CARFAX® and become part of your vehicle’s service history! All franchisees and corporate full-service centers also keep detailed service records, including photos, which customers can view online anytime.
BOOK YOUR APPOINTMENT TODAY!
KEEP THE MOUSE-OUT OF CARS
We now offer safe, non-toxic essential-oil products that repel mice and other rodents! Squirrels, rats, mice, raccoons and other creatures of the night love to make a home in a car or RV cabin or under the hood, especially in stored vehicles. Once they move in, they can chew through wiring and cause severe damage, a problem that has even made car manufacturers the target of lawsuits.
FIND OUT MORE!
ABOUT NHOU®
My name is Joe Dupont and I am the owner and operator of NH Oil Undercoating®. My company is committed to helping solve a major rust problem here in the Northeast. Undercarriage rust is your vehicle’s number one enemy. It is shortening the life span of millions of vehicles in the US and costing consumers billions in repairs each year.
LEARN MORE ABOUT OUR STORY
1-855-OIL-RUST or (603) 491-9012
Call for Details on Our Combo Special Deals!
NHOU® PRODUCTS AND SERVICES
Every NHOU undercoating formula is engineered to creep into all the little places rust begins, sealing out corrosives and stopping rust. Today’s vehicles are built with thousands of folds, spot welds and seams, all of which are prone to rust and corrosion. To improve fuel efficiency, manufacturers use thinner, lighter metals that corrode faster than those of ten years ago. On top of that, today’s road-salt brines contain adhesive ingredients that make them stick to car frames. NHOU Mil-Spec formulas are laboratory-engineered and real-world proven to force out moisture and seal off oxygen, stopping rust where it starts.
NHOU® Oil Undercoating
The Industry Leaders in Solvent-Free, Non-Toxic, Non-Hazardous Vehicle Protective Coatings
Corrosion weakens bridges, damages aircraft and shortens the life of millions of vehicles. Is it shortening the life of yours? Fight back with NH Oil Undercoating®, the best oil-based rustproofing system on the market. NHOU® protects your vehicle against damage from salt, liquid de-icers and winter driving conditions, penetrating seams and crevices and pushing out moisture.
NHOU Advanced Rust Protection is proud to offer this state-of-the-art product. It stops rust and corrosion on metal, protects vinyl and plastic surfaces from UV rays, and keeps moving parts working smoothly through lubrication. Save your vehicle today!
DISCOVER NH OIL UNDERCOATING
Before & After: NHOU Rustoration®
We’ve seen some pretty dramatic transformations in our years of applying NH Oil Undercoating®!
If It's Worth Owning, It's Worth Protecting!
OUR MISSION
Founder Joe Dupont works with a laboratory to engineer every NHOU® product so it protects and lasts. NHOU® has grown from a part-time operation in a family garage into a leading, globally recognized brand.
NHOU is always improving its products, refining each formula as the science evolves. With over 15,000 oil coatings under our belt, we’ve expanded to include Rustoration® and wax/oil coatings, protecting your vehicle from top to bottom!
READ OUR STORY
FREQUENTLY ASKED QUESTIONS
-
Will it void my warranty?
Absolutely not! Because NH Oil Undercoating® takes an entirely different approach, it helps prevent annoying electrical malfunctions and makes the vehicle work better and last longer. While manufacturers probably won’t admit it, they have to love NH Oil Undercoating® because it reduces the number of corrosion-related warranty claims they’re obligated to pay. It also saves customers the time and aggravation of filing warranty claims. NH Oil Undercoating is used and sold by most major manufacturers’ dealerships.
-
How is it applied?
NHOU is atomized under high pressure, which pushes the product deep into the seams, cracks and crevices where corrosion starts. Once applied, it removes moisture from these areas and adheres strongly to the surfaces, remaining active with excellent “creeping” and self-healing abilities.
-
What is covered in our lifetime warranty?
NHOU Boss Wax® & Boss Wax® Hybrid Lifetime Transferable Nationwide Warranty
When a factory-trained certified applicator applies Mil-Spec Boss Wax® to your vehicle, we confidently warranty it for the full life of the vehicle. You can bring your vehicle to any certified applicator for thorough inspections and complimentary touch-ups.
Please note that touch-ups requiring an overnight stay because of large surface-area repairs, such as major accident damage, may fall outside the warranty coverage and may incur charges.
VISIT OUR CHICHESTER SHOP
NHOU Advanced Rust Protection
169 Dover Road
Chichester, NH 03258
Phone: 1-855-OIL-RUST or (603) 491-9012
© 2026 NHOU Advanced Rust Protection · 169 Dover Road, Chichester, NH