Simply Underbody Spray - 500ml - Black
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Product Information
Full details
Simply Underbody Spray is a high-performance, rubber-based protective coating designed for vehicle owners who want to shield their chassis from rust, corrosion, and road damage. This 500ml aerosol is perfect for cars, vans, 4x4s, and trailers, providing a durable, flexible barrier against salt, moisture, and debris. While it offers excellent long-term protection and noise reduction, it requires careful surface preparation to ensure the product adheres properly and provides the intended benefits.
All features
| Model Part Number | SP-040 |
|---|---|
| Brand | Simply |
Extended Product Information
FAQs
Can I apply this over existing rust?
It is best to remove loose rust with a wire brush before application to ensure the product bonds directly to the metal.
How long does it take to dry?
Drying times vary by temperature and humidity, but the coating is generally touch-dry within a few hours and cures fully within 24 hours.
Can this be painted over?
Simply Underbody Spray is designed to be a final protective coating; it is not recommended to paint over it.
Is one 500ml can enough for a whole car?
One can is sufficient for smaller sections like wheel arches, but a full chassis application may require multiple cans.
Do I need to prime the surface first?
The product is formulated to adhere to bare or primed metal, provided the surface is clean and dry.
Troubleshooting
Spray nozzle is clogging
Invert the can and spray for a few seconds to clear the valve, or remove the nozzle and soak in solvent.
Coating is peeling off
The surface was likely not cleaned or dried properly; remove the loose material, clean thoroughly, and reapply.
Dripping or sagging during application
You are holding the can too close to the surface or applying too much material at once; use lighter, faster passes.
Pros and Cons
Pros
- Protects against rust and corrosion effectively
- Easy-to-use aerosol application
- Provides added soundproofing qualities
- Resilient and flexible finish that resists chipping
Cons
- Requires thorough cleaning before application
- Cannot be applied to moving parts like brakes or exhaust
- Overspray may require masking of vehicle body panels
Setup, Compatibility & Care
Before applying the spray, the underbody must be completely clean, dry, and free from grease, oil, or loose rust. Use a wire brush for heavy corrosion and a degreaser to prepare the surface. Ensure the aerosol is at room temperature and shaken vigorously for at least two minutes before use.
Compatibility Note: This product is designed for vehicle chassis, wheel arches, and floor pans. Do not apply to exhaust systems, brake discs, calipers, or engine components, as the high heat or operational friction will compromise the coating. Periodic inspection of the underbody is recommended; if the coating is damaged by severe impact, clean the area and re-apply a fresh layer to maintain full protection.