ADVANCED RUST PROTECTION

NHOU^® PROTECTIVE COATINGS ARE THE FASTEST, LEAST EXPENSIVE WAY TO ADD SAFETY AND VALUE TO YOUR VEHICLE— SEALING OUT CORROSIVES AND ELIMINATING RUST

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PROFESSIONAL SERVICE

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Protect More. Replace Less.

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Protect your ride. Extend its life—with NHOU® Innovation That Doesn't Rust

NHOU Essentials

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NHOU Original Oil Undercoating with Peppermint

NHOU® Products

The same NHOU Original Oil Undercoating you trust, now infused with peppermint. It’s our proven oil-based formula: it creeps into seams and crevices, stays active, and keeps moisture away from bare metal. The only change is a fresh peppermint scent, so it protects exactly as it always has.

🔹 Same proven rust protection
🔹 Now infused with peppermint
🔹 No change to the oil’s effectiveness

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NHOU V3 Formula Undercoating

Oil Undercoating, NHOU V3 Undercoating

AVAILABLE NOW: NHOU V3. The next evolution in rust protection is here. NHOU V3 is a hybrid that combines deep-penetrating petroleum oil, long-lasting wax-based durability and natural, moisture-blocking lanolin in one formula, now infused with peppermint. It came out of years of testing in our own shop on thousands of real vehicles, guided by feedback from customers and applicators. The result is a drip-free, longer-lasting undercoating built for pros and trusted by customers. Order online today or have it applied at a participating NHOU applicator.

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NH Oil Undercoating Touch-Up Cans -Your Rust Protection, Recharged

NHOU® Products, Oil Undercoating

Not available to California residents

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NHOU® Enviro Eco Rust Prevention

NHOU® Products

Introducing NHOU® Enviro the environmentally responsible undercoating solution designed to provide superior rust protection without compromising the planet's well-being. Engineered with bio-based ingredients, this 100% biodegradable formula offers long-lasting defense against corrosion, making it ideal for vehicles operating in sensitive ecological areas.

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SCHEDULE LOCAL SERVICE

OUR SYSTEM
Smart Protection, Engineered to Endure.

Keep Rust Out. Keep Value In. With NHOU® Advanced Protection

Preserve What Matters Most

Rust-free vehicles are safer to drive, easier to work on and maintain the highest resale value.

DISCOVER PRODUCTS

Expertly Applied by Certified Technicians

NHOU Authorized Applicators are trained one-on-one at our headquarters to ensure every vehicle receives the highest standard of care.

SCHEDULE LOCAL SERVICE

Gentle on the Planet, Tough on Rust

Formulated with the environment in mind, every NHOU formula is non-hazardous and unregulated.

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NHOU V3: Three Variants, Unrivaled Performance

Combining three variants—lanolin, wax, and oil—we’ve engineered a breakthrough in rust protection that combines the best performance characteristics of each. Now a single undercoating formula fuses the natural moisture-repellency of lanolin, the durability of wax, and the critical creeping of oil. NHOU V3 was engineered in-house, tested on thousands of vehicles, and shaped by real-world feedback from pros like you. This isn’t just another formula. This is the Rust Revolution

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NHOU® FLEET LIFE EXTENSION PROGRAM

EXTEND FLEET LIFE.
PROTECT THE BUDGET.

Towns are spending $150K–$250K+ on equipment that corrodes before it should. NHOU helps municipalities, DPWs, and public fleets put a real program around protecting those assets — products, free on-site training, procedures, and a repeatable maintenance schedule your crew can actually follow.

DPW FLEETS
MUNICIPALITIES

SCHOOL
TRANSPORT

HIGHWAY DEPTS
COMMERCIAL

TALK TO US ABOUT YOUR FLEET

EQUIPMENT PROVIDED

Full spray setup and application tools — we bring everything to your facility

PRINTED MATERIALS

Reference packets every attendee keeps and uses on the job immediately

REPEATABLE PROGRAM

e help you build a maintenance schedule your crew can own season after season

PROFESSIONAL TRAINERS

Factory-trained NHOU applicators lead every session — real-world expertise

LIVE DEMOS

Hands-on application on real fleet vehicles and equipment — not just slides

ALWAYS FREE

LUNCH INCLUDED

We feed your crew — it’s part of the deal

DISCOVER WHY

As a hands-on family business, we’re constantly improving—formulating, applying, training, and innovating to help people protect what they value most.

Done Right. Done by Pros-Hands-On Expertise You Can Trust

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NHOU REVIEWS

Backed by Science. Proven by People

See what our customers are saying about their experience with NHOU products and services

      EXCELLENT  
   Based on 800 reviews 
    
 
 
 
   
 
 
      Posted on Google  
  
 
   Brock Kerr 
 15 October 2026
 
 
 Trustindex verifies that the original source of the review is Google. I remember NH Oil Undercoating back when they were first getting started. Joe was out there with a truck and trailer, literally getting underneath vehicles and doing the work himself. To walk in today and see what this place has turned into is pretty incredible.

They've come a long way from those early days. Now they've got a huge operation, their own undercoating products, and shops using their products all over the country. Pretty impressive when you think about where it all started.

Anybody who's lived in New Hampshire knows what the salt does to vehicles around here. It's great seeing a local, family-run business take something so simple and turn it into what it is today. You don't see that kind of growth without a lot of hard work and dedication.

Really happy to see how far Joe and his family have come. They've certainly earned their success. Keep up the great work!
  
 
     Posted on Google  
  
 
   Judy Kosuda 
 14 October 2026
 
 
 Trustindex verifies that the original source of the review is Google. Highly Recommend NH Oil Undercoating!
NH Oil Undercoating is an excellent place to go for convenient, professional service and outstanding care for your vehicle. The hospitality is exceptional, and the customer waiting area is clean, comfortable, and welcoming. It features cozy couches, a complimentary high-quality massage chair to enjoy while you wait, and free coffee, hot cocoa, and snacks.
The entire facility is impressively clean and free of unpleasant odors, even with the undercoating products being applied in the outdoor service bays.
If you’re looking for excellent customer service, quality undercoating materials, and a comfortable, welcoming experience from start to finish, NH Oil Undercoating is the place to go! I highly recommend them! I will be a long time new customer.
  
 
     Posted on Google  
  
 
   Chris Landry 
 14 October 2026
 
 
 Trustindex verifies that the original source of the review is Google. This is the second truck I have had undercoated, the first is going on 7 years now and I just picked my girlfriend’s new vehicle. I referred her to them. I will take every vehicle I own to them in the future. They’re neat, and take pride in their work. Protect your investment if you plan on keeping your vehicles in the Northeast for awhile!!!
  
 
     Posted on Google  
  
 
   Allyson Bellemore 
 14 October 2026
 
 
 Trustindex verifies that the original source of the review is Google. Nice cozy atmosphere and nice staff! This is my first time using them, but heard great things. Excited that my new car will be protected from harsh NH winters.
  
 
     Posted on Google  
  
 
   RJ Murphy 
 12 October 2026
 
 
 Trustindex verifies that the original source of the review is Google. Went in for a V3 undercoating for my 2025 F150. I got my truck back with the hood and part of the windshield covered in undercoating. I have gone to this location before and not had any issues like this. I get that there may be some overspray, but my hood was completely covered in oil. It took me a while to clean it and I ruined a few microfibers in the process. I guess their quality has gone downhill. I cannot in good conscience recommend this place anymore.

Also, I called the shop to tell them about this, you can no longer get a human on the phone, it’s all AI. I left a message and they never called me back. So their customer service has also gone downhill.
  
 
     Posted on Google  
  
 
   Gary Stanhope 
 8 October 2026
 
 
 Trustindex verifies that the original source of the review is Google. Great waiting room. Great service and work is done well, and in the estimated timeframe.
  
 
     Posted on Google  
  
 
   Lilah Flynn 
 7 October 2026
 
 
 Trustindex verifies that the original source of the review is Google. Great job
  
 
     Posted on Google  
  
 
   Nick Skafidas 
 7 October 2026
 
 
 Trustindex verifies that the original source of the review is Google. Great place!
  
 
     Posted on Google  
  
 
   Nikayea Gadwah 
 6 October 2026
 
 
 Trustindex verifies that the original source of the review is Google. Staff is friendly, efficient and knowledgeable.
  
 
     Posted on Google  
  
 
   Raymond Cote 
 6 October 2026
 
 
 Trustindex verifies that the original source of the review is Google. Great penetration and adhesion. Only product I use.
  
 
 
  
 
   Verified by Trustindex  Trustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more

From Rust to Results: The NHOU® Story

NHOU® Advanced Rust Protection has grown from a part-time operation out of a family garage to becoming a leading, globally recognized brand with the mission of protecting vehicles from corrosion. Whether it’s from road salt or humid environments, rust is a critical factor in vehicle trade-in value and safety. NHOU® is the fastest, least expensive way to add safety and value to your vehicles.

Regular Hours

Monday – Thursday: 8am-5pm

Friday: 8am-12pm

Saturday – Sunday: Closed

(603) 491-9012

Seasonal Hours

(Sept-Dec)

Monday – Thursday: 8am-6pm

Friday: 8am-4pm

Saturday – Sunday: Closed

GET IN TOUCH

SCHEDULE
SERVICE.

Ready to protect your vehicle? Contact us to schedule your undercoating appointment or get answers to your questions.

CAREERS AT NHOU

WE'RE
HIRING.

Join the team behind the standard. We're looking for people who take the work as seriously as we do.

VIEW OPEN POSITIONS

ADVANCED RUST PROTECTION

PROFESSIONAL SERVICE

Protect My Vehicle

SHOP ONLINE

Shop NHOU Products

FLEET SOLUTIONS

Protect Your Fleet

START YOUR BUSINESS

Become an Applicator

NHOU Essentials

NHOU Original Oil Undercoating with Peppermint

NHOU V3 Formula Undercoating

NH Oil Undercoating Touch-Up Cans -Your Rust Protection, Recharged

NHOU® Enviro Eco Rust Prevention

OUR SYSTEM Smart Protection, Engineered to Endure.

Preserve What Matters Most

Expertly Applied by Certified Technicians

Gentle on the Planet, Tough on Rust

NHOU V3: Three Variants, Unrivaled Performance

EXTEND FLEET LIFE. PROTECT THE BUDGET.

EQUIPMENT PROVIDED

PRINTED MATERIALS

REPEATABLE PROGRAM

PROFESSIONAL TRAINERS

LIVE DEMOS

LUNCH INCLUDED

As a hands-on family business, we’re constantly improving—formulating, applying, training, and innovating to help people protect what they value most.

Backed by Science. Proven by People

From Rust to Results: The NHOU® Story

Regular Hours

Seasonal Hours

SCHEDULE SERVICE.

WE'RE HIRING.

OUR SYSTEM
Smart Protection, Engineered to Endure.

EXTEND FLEET LIFE.
PROTECT THE BUDGET.

SCHEDULE
SERVICE.

WE'RE
HIRING.