Skip the auto shop - Our mechanics make house calls

Q: Can i bolt a sheet of wood underneath my car to prevent rust?

asked by on

I live in New York state, so cars are always getting torn up by rust and salt damage. I noticed that most cars are open underneath, with a lot of exposed metal.

Is it safe to bolt a sheet of wood underneath to try and prevent some of that damage?

Hello, and thank you for writing in. Wood absorbs water, and due to that physical trait, you should not use wood to help prevent rust damage. This will instead hold the moisture close to the metal components and influence them to rust faster. This type of maintenance has more to do with prevention. You should look into chemical sprays that you apply to the bottom of the vehicle that keep water off of the metal surfaces. Another common way to handle this is to use a quality vehicle wax twice a year. This is more for the body and where it attaches to the frame. Use a separate spray for the bottom of the vehicle. If road salt is commonly used in your area, you will want to make sure it gets washed off as soon as possible. Even rinsing the vehicle after it gets a light coating of road salt will help dramatically. If you already have some rust damage, you should remove that rust and treat it so that it stops the corrosive damage. For more help, contact our service department to schedule an appointment, we would be happy to take a look.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: I'm smelling gas - 1997 Volvo 850

Hi there and thanks for contacting YourMechanic. The best way is to look in your owner's manual and look up the fuel tank size. Then remove the fuel tank from the vehicle to gain access to the fuel filler neck....

Q: Rusted spring perches in front suspension are falling apart

Hello. When rust like this occurs, the only way to repair it is to take the vehicle to a frame fabricator, or by having the frame replaced. In certain climates this will occur if the frame is not protected with...

Q: Rustproofing & rubberized undercoating for 2 cars

Any part of the vehicle that has already started to rust will continue to rust underneath the coating no matter what type of coating is applied. Modern vehicles already have rustproofing applied at various stages of the production process and...

Related articles

How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.