rust proofing car underseal corrosion prevention undercarriage dinitrol 4941 car guide tiltrak shop uk treatment
rust proofing car underseal corrosion prevention undercarriage dinitrol 4941 car guide tiltrak shop uk treatment
Rust Proofing

Rust Proofing

With many different rust proofing treatments available by specialist providers, independent garages and D.I.Y. solutions. Choosing a professional competent treatment provider or suitable brand can be a stressful task. When you are simply trying to find a treatment that will protect your vehicle from corroding. However, some UK professional providers do not apply treatments correctly. This is usually due to a lack of experience, knowledge or training with underseal products. Due to this reason, we have created a comprehensive ultimate rustproofing treatment step by step guide.

The guide below is based on applying DINITROL Corrosion Protection product treatments. By following the step by step process performed in DINITROL Scandinavian treatment centres. Who are internationally recognised for operating to the highest standards. This is primarily due to the harsh Scandinavian winter conditions with snow and ice. Along with most people living in close proximity to the coast. Making them susceptible to sea salt a corrosive accelerator naturally present in the atmosphere. Owners of vehicles living in Denmark, Sweden, Finland and Norway must protect and retreat their cars religiously every couple of years.

This car rust proofing article also provides a good reference point guide. For checking the application process when seeking potential treatment providers. It’s also an invaluable resource for D.I.Y. rust proofing applications providing expert tips and professional guidance. If you are searching to find a professional treatment provider the DINITROL UK website enables you to locate local providers. Alternatively, if you are seeking quotations from other sources please be suspicious of any quotes under £400. Quality workmanship with rustproofing is essential to ensure your vehicle remains rust-free. Without the premature requirement to replace body panels that can become costly.

Rust Proofing Guide Step One

Prior to starting any rustproofing treatments, the vehicle must be lifted and all wheels removed. Removing all plastic trim protective guard covers fitted around the undercarriage is essential to gain full access. It’s also advisable to remove all sound deadening pads from wheel arches as well. They are commonly fitted on newer cars to reduce road noise in the cabin but can sometimes retain moisture leading to corrosion. Please note if you are applying a D.I.Y. rust proofing application you will require a set of suitable ramps and trolley jack. Please note if you search online it’s possible to rent a professional vehicle lift via an hourly rate in some garages.

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Steam Cleaning Step Two

The vehicle undercarriage must now be steam cleaned to remove all dirt, grime and debris. We also recommend using a specialist anti-corrosive cleaning solution. To ensure all salts are completely removed from the surface before completely rinsing off with hot water. When using the steam cleaner make sure you clean within all crevices and wheel arches thoroughly. You will also need to wait until the undercarriage is completely dry before applying any corrosion protection treatments. Otherwise, moisture could become trapped underneath that will soon start rusting. If you have selected a professional treatment provider make sure they have a suitable drying area. For D.I.Y. applications purchasing a humidity, gauge can be I wise investment to check and prevent moisture from becoming trapped. Usually, the car must be left overnight for approximately 24 hours.

However, the time can be increased due to damp or humid weather conditions. Sometimes professional rustproofing technicians will leave a car to dry for around 2-3 days or more. The correct drying time is dependent on local climate temperatures. Failing to clean the underbody chassis adequately or not allowing to fully dry can lead to future disastrous problems.

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Rust Proofing Inspection Step Three

Once the vehicle underbody is completely dry a full inspection is usually performed. When a professional treatment provider is rustproofing the vehicle. However, you can still conduct an inspection yourself when opting for a D.I.Y. application. By inspecting the undercarriage and wheel arches for any evident corrosion rust already present. We recommend removing all identified flaking rust corrosion with a wire brush from the surface. Before applying DINITROL RC 900 a specialist rust converter and primer. This complex organic Chelat base epoxy treatment actively converts rust on substrates into a stable organic iron complex. Also, to prevent further corrosion it forms an impermeable barrier and the coating is over-paintable.

During this process, you must keep treating the rust until it appears black to confirm the conversion has been successful. Sometimes, multiple coatings may be needed with the rust converter until no evidence of corrosion remains. Please note when applying additional coatings you must wait for the previous rust converter treatment to fully dry.

Normally the coating takes around 24 hours to fully dry based on average atmospheric conditions of 60% humidity and 15 degrees. Also when applying the rust converter covering the outer edges is vital to provide a good seal. Remember the visual indication that the treatment has been successfully applied is the saturated deep black surface. If you don’t wish to use the DINITROL RC900 spray rust converter we can recommend DINITROL RC800. This co-polymer latex-based rust converter can be brushed onto the treatment area substrate. It also doesn’t contain phosphoric acid or lead and has a very low order of toxicity. For vehicle owners who have instructed a professional rustproofing treatment provider.
You should request a copy of the inspection report and also physically visit the treatment provider to inspect the vehicle yourself.

If this is not physically possible don’t be afraid to ask for full photo documentation to accompany your report. It’s your vehicle and assessing any corrosion damage to evaluate the problems is key to stopping rust. This can sometimes include the requirement for additional welding and replacement parts in extreme cases.

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Underbody Coating Vehicle Masking Step Four

Before spraying any rustproofing corrosion protection coatings. You need to fully mask the vehicle to prevent overspray. We recommend purchasing some professional drop masking film. Normally used by professional car body paint sprayers that will cling to vehicle. The masking film that is supplied on large rolls is also ideal for protecting floor surfaces. Along with surrounding walls when working within a small garage space at home. Also whilst it’s possible to use newspaper for masking paper we advise against this practice. This usually leads to the product coating bleeding through the paper around the edges. Due to this reason, professional car Bodyshop masking paper should be sourced. Please make sure all masking film and paper are securely taped into position to minimise the impact of any impact.

You must also fully mask the vehicle brakes and exhaust this is for safety reasons and also prevents the product from burning on the surface. To fully protect the vehicle disc brakes section and wheel arm extensions. It’s sometimes possible to secure a plastic bag over the top if you are unable to purchase professional masking product accessories. Also, don’t worry if you incur a little overspray during the rustproofing treatment application. DINITROL Autocleaner 7225 is specifically designed for removing overspray and small drips associated with underbody coatings.

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Rust Proofing Cavity Injection Step Five

When applying the cavity wax you need to locate the insertion holes around the vehicle that are already present. The cavity wax injection access holes are created by automotive manufacturers. During vehicle production assembly and you should not start drilling the frame yourself. This can cause structural damage, safety issues, void your insurance and also lead to corrosion by bare metal becoming exposed. Usually the access holes will be sealed with plastic cavity plugs, however, it’s possible to purchase these on Tiltrak if required. Within the DINITROL cavity wax collection, you will find a wide selection of products including DINITROL 1000 a transparent coating. Along with DINITROL ML a brown oily penetrating cavity wax that is ideal for older second-hand cars and classic cars.

The DINITROL ML cavity wax is very effective at stopping any corrosion already present. You will need to inject the cavity wax into doors, frame members, box sections, crevices, sills, pillars and bonnet. Be careful when injecting cavity wax into the doors to avoid damaging safety sensors. That are usually present and connected to air-bag impact activation systems. To successfully inject the cavity wax you’ll need additional tool accessories. That can include simple aerosol nozzle extension attachments. Or hose lance extensions that are screwed onto undercoating guns. When attached to an air supply whilst using 1-litre schutz canisters. Also please be aware you only apply pressure to the trigger once the extension hose is fully inserted whilst pulling back out to apply a fine mist.

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Underbody Primer Layer Step Six

Before applying the underseal rustproofing treatment to the undercarriage. We recommend applying a thin layer of cavity wax to the undercarriage beforehand. This has two great benefits by softening up the underbody coating already present and helping to improve adhesion. The cavity wax also contains rust inhibitors that can provide further protection against corrosion caused by road salt and abrasion. DINITROL ML can be applied wet in wet with DINITROL 4941 Car black bitumen based underbody coating.

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Rust Proofing Underbody Step Seven

You are now ready to apply the underbody rustproofing coating. We recommend using DINITROL 4941 Car a solvent-based coating. With excellent abrasion resistance properties and self-healing characteristics. Please note in some circumstances you may need to warm the undercoating due to being a much thicker material when compared with cavity wax. You will now need to apply by evenly spraying, to build thickness of around 700 microns that will dry to around 500 microns. This must also be achieved by layering the product onto the surface to avoid it simply dripping and falling off the car.

Also if the underseal layer is to thin it’s likely to crack when dry and provide no protection. You also need to make sure the wheel arches are fully coated and protected due to them being under constant attack from stone-chippings. Once the DINITROL 4941 underseal rustproofing treatment has been applied and becomes dry. Your vehicle chassis is protected against stone-chippings, gravel, salt, water ingress and harsh weather conditions. To remove any overspray we recommend using DINITROL 7225 Auto Cleaner and a Benzene based spirit to clean equipment.

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Rust Proofing Underbody Protection

DINITROL recommends that your car should be treated with a new DINITROL rustproofing coating, every 2 years for the ultimate protection. However, we also recommend inspecting the undercarriage regularly to check for small holes. Usually caused by road debris and stone chippings that can reveal the unprotected bare metal underneath. Inspecting the underseal can be conducted by touching and feeling the rubberised layer surface for any defects. If you find any small holes or cracks it’s possible to repair them with DINITROL 4941 Car aerosols. Or DINITROL 479 an extremely thixotropic brush-able underseal that forms a very hard, elastic, wear-resistant protective film.

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Finally, after reading this feature. You may wish to source a professional rustproofing treatment provider. Make sure you ask them what warranties or guarantees are provided. You should also check when the next underbody inspection is due. To prevent any warranties or guarantees provided becoming void. Also if you don’t wish to apply DINITROL products there are alternative brands available. Including Mercasol, Hammerite Waxoyl, Por 15, Ziebart and Krown.

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Engine Corrosion Prevention

Also for the ultimate vehicle rust proofing treatment corrosion protection. You may wish to additionally protect the engine compartment. With DINITROL 4010 Corroheat a specialist heat resistant transparent coating. The corrosion protection wax creates a hard resistant film, that can withstand temperatures exceeding 200°C. The engine compartment rustproofing corrosion prevention treatment is also resistant to both alkalin and acids. If you want a full vehicle corrosion protection rustproofing system. We advise people to try the extensive range of innovative DINITROL products. Commonly applied by many global automotive manufacturers during vehicle assembly and throughout the after-market.

This article was published July 22, 2019