AUTOMOTIVE UNDERCOATING

Extend Vehicle
Life With Real Rust Protection

Road salt and moisture are working on your undercarriage every day. We strip it clean with dry ice, then seal it with professional-grade coating that bonds to metal, not to dirt.

Free Evaluation

Clean Slate Protection

We don’t spray over dirt and rust. Dry ice removes contaminants first so coating bonds to clean metal.

Professional Coating

Coatings that penetrate seams, reach hidden areas, and won’t crack or peel like cheap rubberized spray.

Years, Not Months

Self-healing films reseal after minor scratches and hold up to pressure washing and winter storms.

OUR COATINGS

Three Coating Based on Your Needs

The right product depends on the condition of your vehicle, how long you plan to keep it, and your budget. Here’s exactly what we offer and where each one shines.

BEST FOR LONG TERM PROTECTION

Dinitrol

Finish

Service Life

Black, semi firm

10+ years

A bitumen-based underbody coating that forms a firm, flexible, self-healing black film. Resisting road debris and moisture while staying safe on zinc, rubber, and plastic

  • Frame-rail cavity injection included
  • Stone-chip and abrasion resistant
  • Ideal for new trucks and keepers

BEST FOR EXISTING RUST

WoolWax

Finish

Service Life

Black, wet/waxy

2-3 years

A lanolin-based coating that creeps into seams and crawls under existing surface rust. Stays soft so minor scratches reseal themselves. Easy to touch up and re-apply seasonally.

  • Creeps into seams and pinch welds
  • Self-healing after road debris
  • Great value on older vehicles

BEST FOR NEW VEHICLES

Underbody Ceramic Coat

Finish

Service Life

Clear, dry-to-touch

8+ years

Ceramic coating engineered for extreme environments. Resisting chemicals, abrasion, and extreme heat, while keeping the undercarriage surface visible and protected for years.

  • Keeps factory markings visible
  • Non-tacky, clean finish
  • 100% hydrophobic coating
Before and after of a vehicle's rusted undercarriage cleaned, rust-treated, and undercoated by CryoMode

THE PREP

Undercoating is only as good as the surface underneath it. Pressure washing drives water into seams and leaves you waiting days for a truly dry frame. Sand and media blasting leave grit in every crevice. Dry ice sublimates on contact. It lifts the salt film, undercarriage grime and loose scale, then disappears as gas.

No water trapped in frame rails or seams

No abrasive media left behind to hold moisture

Non-conductive and safe around wiring, sensors and brake lines

Coating bonds to bare, dry metal for maximum adhesion

What a week in our shop looks like

01

Dry ice blast

We strip dirt, road grime, salt film, loose scale and old flaking coatings with dry ice. No water, no grit, no residue left behind. 

02

Mask / Tape

Brakes, exhaust, sensors, and any bare metal we’re not treating are carefully masked off to protect them before coating application.

03

Apply Coating

We apply the rust treatment or coating you’ve chosen. Sprayed to spec and worked into seams, frame rails, and rockers.

04

Hand-off

The coating cures fully before we hand your vehicle back/ Sealed, protected, and ready for the road.

WE’RE NOT “JUST COVERING UP RUST”

How rust forms, and how we stop it

Rust needs three things to grow: iron, oxygen and water. Combine them and you get an electrochemical reaction, iron + water + oxygen becomes hydrated iron oxide. Salt accelerates it dramatically. Remove any one of those three ingredients and the reaction cannot continue.

What it is: A high-quality corrosion-inhibiting coating creates a continuous film barrier that blocks moisture and oxygen from reaching the base metal, including metal that is already showing surface rust. That’s why properly applied coating stops existing rust on contact instead of hiding it.

What it is not: A coat of paint sprayed over flaking scale. Dry ice removes every loose contaminant first so the film has clean metal to grip.

Rusted vehicle undercarriage and rear axle before cleaning and rust treatment by CryoMode

What People Are Saying About Us

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Kirk Jackson profile picture
Kirk Jackson
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The team at CryoMode were great to work with. Very responsive, very quick turn around, thorough job performance and have provided me with a much higher degree of confidence in my vehicles longevity. I would highly recommend them to anyone looking to extend the life of their vehicle like I was.
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Wilson Soong profile picture
Wilson Soong
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Great work. Great service. I love that they keep you informed and provide photos of the before and after work. Highly recommend.
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Troy Etley profile picture
Troy Etley
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I've been an automotive business for 30 years and have come in contact with a lot of vendors. With these guys, all you have to do is have an in-depth conversation, tour the facility or go through the website, read about the services they offer (and the associated reviews) and you will know everything you need to know. Clearly a five-star business from top to bottom.
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Bruce Marcum profile picture
Bruce Marcum
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All work done as advertised.great guys to work with. Work done in a timely professional matter
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knut christiansen profile picture
knut christiansen
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Super easy to work with. Ruben and Zach were direct and pro. Truck looks beautiful.
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Charles & Shely Balch profile picture
Charles & Shely Balch
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The team went above and beyond working on my engine bay, as I had some very stubborn cosmoline areas. They kept me in the loop during the process and even let me watch their work.
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Harrison Vallaro profile picture
Harrison Vallaro
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I brought my truck in with the underside covered in rubberized and wool wax based undercoating. They did an amazing job cleaning it up and exposing the factory paint underneath. Very nice guys and super easy to work with!
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joey cheema profile picture
joey cheema
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Best choice It was easy and superb experience. My Jeep Gladiator is fully built but was missing this final puzzle, but not anymore after this Dry Ice cleaning and proper coating it looks newer and better. Thank you to the whole team.
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Luke profile picture
Luke
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Great experience from end to end. Very knowledgeable and professional staff that clearly take pride in their work. I am very satisfied with the prompt and quality work they did on the underbody of my older GMC truck. Definitely recommend their services if you have concerning rust issues!
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Blair Greenberg profile picture
Blair Greenberg
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Friendly, quick service - cleaned my engine bay in just over an hour! Looks brand new. Will be back again.
How long does the undercoat process take?

It mostly depends on the project and product of choice.

WoolWax applications are typically a day turn around. Drop off early morning, pick up before closing.

Dinitrol applications are a good portion of the week. Expect we have your vehicle multiple days.

Ceramic coat applications we can typically clean and apply in one day, but we keep over night to allow time to fully cure.

The life of an undercoating depends on the products used and the quality of the installation. CryoMode uses a selection of products that last anywhere from 3 years to 10+ years. Our recommended product for your vehicle is based on the condition of your vehicle and your budget, but we have options for just about everyone.

Yes, we offer free estimates by appointment only at our shop in Mukilteo, WA. In most cases we can get your vehicle on the lift to complete an inspection with you. This allows us to create a plan together that falls within your budget and needs.

We can help stop rust from spreading! We offer products that thoroughly coat and seal the metal under your vehicle, preventing exposure to oxygen and water. We also coat the inside of the frame on trucks and SUVs to prevent rusting from the inside out.

Pressure washing pushes water into seams and crevices, leaving trapped moisture that can accelerate rust. Dry ice blasting sublimates on contact. No water, no residue, and no waiting for the frame to dry before coating.

It depends on your vehicle’s condition, how long you plan to keep it, and your budget. Dinitrol suits long-term ownership, WoolWax is great for vehicles with existing rust, and our ceramic option keeps factory finishes visible. We’ll walk you through the right pick during your free assessment.

Stop rust before it's too late

Every wet season without protection costs you frame life and resale value. Send us your year, make and model and we’ll tell you exactly what your vehicle needs.

Curious about our cleaning services? See dry ice blasting