Sound deadening applications to the underbody chassis area of a vehicle will reduce road sounds on the inside. But is sound deadening really necessary? To some vehicles such as vans and some 4x4 vehicles this can offer a significantly improved driving experience. These vehicles have less interior trimmings therefore are more prone to noice vibration particularly from the wheel wells and door panels.

Rust proofing application will treat and protect the underbody chassis. Protecting against corrosion prepares vehicles for winter weather conditions - wet, salt gritted roads. But is rust proofing really necessary?

Regular washing with attention to the underbody will help rid your car of a build-up of salt and mud etc. However, salt and grime can collect in those tough to reach nooks and cavities causing problems. It you live close to the coast or drive winter gritted roads, then a rust proofing application is going to protect your car for longer.

That said, corrosion resistant coatings at time of manufacture to many makes of vehicles is pretty comprehensive. So, unless you're planning on keeping your car for more than 5 years then the need may not be there, unless the car has had damage and the rust proofing coating will need to be reapplied. 

How often do you take a look under your vehicle to check for rust? 

The parts that are most susceptible to rust are the underneath chassis components - frame, A arms, suspension parts, painted steel brackets and drive shafts. These areas, rust experts will argue are not always fully protected at the factory or import plant. Rust proofing and frequent undercarriage washes, cars, vans and trucks are far more likely to stay rust free on the undercarriage. 

Dinitrol anti-corrosion is a brand that offers a wide range of rust proofing products including cavity waxes and underbody waxes and oils. Applied to the underbody of a vehicle, Dinitrol offers the following advantages: 

• reduces road noice by absorbing sound transmission, 
• protects against stone chips
• protects against the onset of corrosion
• resists moisture - underbody wax rust proofing dries to a flexible tough film that withstands rain and salt

Dinitrol underbody coatings can help in reducing noice by as much as 10 decibels. This is sufficient to reduce road noice in a vehicle. Cavity waxes applied into the side panels, doors and body frame crevices and underbody chassis area will also offer some some deadening.

Dinitrol is an oil based product that contains rust inhibiting ingredients to treat rust and offer high quality rust proofing to prevent further corrosion.

Dinitrol 445 is a black polymer based underbody and stone chip coating with good rust proofing and sound deadening properties. It forms a durable, tough and elastic film which results in very good stone chip resistance.

Which product you buy to protect the undercarriage of your vehicle is most likely to come down to choice or ease of application. Dinitrol is well known for it's ease of application - as supported by the number of customer reviews and comments in Practical Classics product comparison articles.

Three things about underbody rust proofing is that it offers some sound deadening effect, protects against stone chips and self-heals, with stands the corrosive effects of salt in road grit or sea air.

Will you be rust proofing your underbody? The choice is yours but to make the job easy, Rejel offer rust proofing kits with all the products you need to treat any signs of rust and protect against further corrosion.