Underbody Coating
Underbody Coating:
Underbody coating is dense cladding applied to underbody of vehicle it provide protect from corrosion for long period A cars underbody is most prone to corrosion. Underbody coating provides long term protection from corrosion to car's underbody. It also protects parts like internal body panels, frame rails and other inner cavities that are not physically accessible but are prone to corrosion.
Type of Underbody Coating
1. Rubberized Undercoating
Rubberized vehicle undercoating is easy to apply and offers sound-cushioning as well as protection from dust, moisture, and dings or dents.
In addition to your undercarriage, rubberized undercoating is also safe to use on wheel wells and quarter panels, and dries to a soft rubbery finish that prevents further rust, damage, or moisture seeps. The coating can be painted over and, if necessary for bodywork, can be easily removed with an undercoating removal spray.
Overall, rubberized coating is generally the best option for protecting your vehicle's undercarriage, as it provides the simplest and best protective measures against rust and moisture.
2. Polyurethane Undercoating
The other option for undercoating your vehicle is to use a polyurethane-based sealant. This type of vehicle undercoating is a little bit quicker and easier to apply.
Oftentimes, polyurethane undercoating will come in canisters ready to preload into an application gun. This type of sealant works by seeping into all cracks and seams, displacing salt and moisture and oozing around rusty areas to bond with and protect unoxidized metal. It also sands quickly in case you'll need to perform bodywork and can be painted over.
On the flipside, this type of car undercoating generally requires a little bit more surface prep work before applying -- sanding and applying an etching primer to bare metals before using are generally recommended.
3. Wax or Paraffin-Based Undercoatings
A paraffin-based undercoating will be the cheapest and quickest option available with which to protect the undercarriage of your vehicle. However, keep in mind that it will wear off quicker than other types of undercoating and will need to be stripped and reapplied at least once every year.
Wax-based undercoatings never truly harden. During application, they drip or flow into seams and cracks to provide protective properties. They are usually available in a spray gun canister or in an aerosol can and offer at least a base protection in moderately humid climates.
4. Asphalt-Based Undercoating
For standard vehicles, any of the aforementioned types of undercoating will provide sufficient protection. For large trucks and heavy machinery, asphalt-based undercoating provides a bit of extra durability against rocks, chips, and moisture.
Asphalt-based undercoating generally contains a little bit of rubberized material that sets up firmly and also helps soften noise. Generally sold in five gallon containers, this type of undercoating also needs more cure time than the other three, and is NOT paintable, making it best to use only for undercarriages.
ADVANTAGES OF UNDERBODY COATING:
1. Protection against Rust and Corrosion:
The primary function of coating is to prevent underbody from rust and corrosion.Metal components which are exposed to mud, stones and water get corrod easily so coating prevent it from rusting.
2. Reduces NVH
One of the benefits of coating is that it reduces NVH (Noise vibrations harshness) level. It act as sound barrier between road and passanger seating compartment. Thickened layer absorbs all noises and vibration.
3. Protection from Chip,Stones
Coating provided protection from chips and stones present in road.Chips present in road tears the underbody components but coating provide addition layer of protection from such stones and chips
DISADVANTAGES OF UNDERBODY COATING
1. Less effective if corrosion already exists
If rust is already present in any part then applying coating will not save the part so first rust should be removed then coating should be applied but even with this coating is not as effective as it would have been for rust free part
2. Economical for New vehicle
If vehicle is new then underbody cost will not be very high but if we want to apply for old vehicle then first we have to remove the existing rust and clean all parts. To clean all parts indvidualy will not be feasible as its price will go very high so underbody coating is economical only for new vehicles
3. Need to apply at regular intervals
Coating is not one time soltution to keep the protection on for underobdy we need to apply coating again after 3-5 years.And also if we travel in road where conditions are not idle and we dont wash underbody of vehicle then life of coating reduces and it will wear out fast but in generak it is adviced to reapply after every 5 years.
Without coating After coating