NHOU® headquarters · Chichester, NH
Visit the NHOU flagship
169 Dover Road, Chichester, NH 03258. The shop where NHOU® formulas are developed and tested, and where every authorized applicator is trained.

Regular hours
Jan–Aug
Mon–Thu: 8am–5pm
Fri: 8am–12pm
Sat–Sun: Closed
Busy season hours
Sept–Dec
Mon–Thu: 8am–6pm
Fri: 8am–4pm
Sat–Sun: Closed
What to expect
Your first visit
Book online or call ahead so we have a bay ready. Here's what to know before you come in:
- Pressure-wash heavy mud from the frame and wheel wells the day before, if you can
- We can work on a wet vehicle, so rain isn't a reason to reschedule
- Wait in our lounge with Wi-Fi, a massage chair, hot chocolate and our own NHOU® coffee blend
- You'll get a RustFax report of what we found and what we did
- You can wash your vehicle right after (skip high-pressure undercarriage washes)
Heavy mud or loose, flaky rust may need extra prep time, and extra charges may apply.
Contact us
Questions before you book?
Send us a note about your vehicle and we'll get back to you within one business day.
Prefer to talk? Call 1-855-OIL-RUST or (603) 491-9012.
Questions
General FAQ
Will undercoating void my vehicle's warranty?
No. NH Oil Undercoating® takes a different approach from hard coatings, and it can actually reduce corrosion-related warranty claims. It's used and sold by many manufacturers' dealerships.
Do you clean the vehicle first?
If your vehicle arrives with heavy mud or flaky rust, it needs to be washed or removed before treatment. We recommend pressure-washing heavy mud from the frame and wheel wells the day before. Extra prep may need extra time and cost.
Can it be done if my vehicle is wet?
Yes. Oil chases water, so wet surfaces actually help it creep into tight seams and crevices.
Is it safe for the environment?
NH Oil Undercoating® is classified as non-toxic and non-hazardous, with less than 1% VOC content. It contains no solvents, phenols or heavy metals and is made from food-safe, highly refined mineral oil.
How often should I come back?
We recommend a yearly application for oil undercoating. V3 customers come back after one year so we can set their schedule, and BOSS Wax® and Hybrid need a $150 touch-up every two years. See maintenance schedules.
See you in Chichester
Book your visit online or call, and we'll have a bay ready for you.