Will this adhere to a slick surface such as aluminum flashing?

Paint especially rattle cans don't tend to adhere to anything slippery, you must at least use something abrasive against it to some degree even if it's only a scour pad just to rough up the surface a little bit.

Would this work in the spare tire compartment located inside a cars' trunk?

Yes. Works pretty much anywhere

Is the undercoating product acid resistant?

I have no idea I bought it cove a mount for a fish finder. I didn’t like it it didn’t dry maybe I put to thick a coat

Rubberized Undercoating | Desertcart Belgium

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€ 27.35

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Sold byAmazon BelgiumDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛠️ Spray on strength, silence, and style—because your ride deserves the best!

NOISE REDUCING ARMOR - Deadens road noise and cushions against damage, turning your vehicle into a quieter, tougher ride.
ULTIMATE RUST DEFENSE - Rubberized formula shields metal from corrosion, water, salt & chemicals for long-lasting protection.
EFFORTLESS APPLICATION - Comfort spray tip with any-angle technology lets you spray upside down or in tight spots with ease.
FAST EFFICIENT COVERAGE - Covers up to 12 sq. ft. per can and dries to touch in just 30 minutes—get back on the road faster.
VERSATILE METAL PROTECTION - Perfect for cars, trucks, trailers, and RVs—protect your investment wherever metal meets the elements.

Rust-Oleum 248657 Rubberized Undercoating Spray is a 15 oz aerosol designed to protect vehicle underbodies from rust, moisture, and road damage. It dries quickly in 30 minutes, covers up to 12 sq. ft., reduces road noise, and features an easy-to-use comfort spray tip with any-angle spray technology. Ideal for cars, trucks, trailers, and RVs, it provides durable, water-resistant protection with a matte black finish.

Specifications

ASIN	B003CT49AI
Age Range Description	Adult
Best Sellers Rank	#5,888 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #48 in Spray Paint
Brand	Rust-Oleum
Brand Name	Rust-Oleum
Color	Black
Color Code	12 sq ft
Container Type	Can
Coverage	12 sq ft
Customer Reviews	4.6 out of 5 stars 3,650 Reviews
Finish Type	Matte
Full Cure Time	3E+1 Minutes
Global Trade Identification Number	00020066185985
Included Components	Rust-Oleum Black Undercoating 15 oz. (12 Pack)
Indoor Outdoor Usage	Outdoor
Is Waterproof	True
Item Form	Aerosol
Item Type Name	Rust-Oleum Black Undercoating 15 oz. (12 Pack)
Item Volume	443.6 Milliliters
Item Weight	14.8 Ounces
Manufacturer	Rust-Oleum
Model Name	Automotive
Model Number	248657
Paint Type	Spray
Part Number	248657
Size	15 Ounce (Pack of 1)
Special Feature	Rust Resistant
Special Features	Rust Resistant
Specific Uses For Product	Exterior
Surface Recommendation	Metal
UPC	020066185985
Unit Count	15.0 Ounce
Warranty Description	Warranty
Water Resistance Level	Water Resistant

Reviews

G**Y

Durable undercoating with consistent texture and strong coverage

This Rust-Oleum undercoating applies evenly and creates a thick protective layer that adheres well to metal surfaces. The texture is uniform and dries to a firm finish that helps reduce moisture exposure. It sprays smoothly and does not run when applied in controlled passes. Once cured the coating feels durable and provides good resistance against road debris and salt. It is effective for covering existing small surface rust and helps prevent further spread when applied properly. The cans spray consistently across the entire set so there is no variation in finish between applications. For anyone looking to protect the underside of a vehicle or metal components this product offers reliable performance and long lasting protection.

10.12.2025

S**S

Great product great price works just like it says

Amazing product. I already used it. It works beautifully and it arrived on time and ran on my doorstep. Thank you Amazon.

31.03.2026

V**C

Works better than I thought it would

Bought it to use under RV. After thoroughly cleaning space to coat, product sticks great. Goes on evenly. I recommend at least two(2) coats. Shake well and shake between spraying. Really good product.

10.05.2026

B**C

Good value as protection and noise reduction

Used as undercoating for my 2006 f150. Works great Protects well

13.04.2026

J**N

Undercoating is easy to use.

Undercoating for my Hummer. Works good and fast.

20.12.2025

B**B

Great

Great product- just Expensive

30.04.2026

D**K

works well

covers well, covers good size area. i undercoated mny pickup truck

22.03.2026

S**Y

Good price

Good product covers well

14.05.2026

K**U

Antirust

Best for applying under car body. Well it takes around three days for complete dry and strong coating.

27.12.2023

M**M

Really good , recommend

Fast delivery

25.11.2023

A**I

Good product

Good product for repainting your Chasis or under-body of car, it gives a new agency like look with Matt black color, and it removes rust and protects against it, makes your car look new again Recommended

6.06.2025

O**M

Great preservation spray

Good for preserving from rust

2.04.2026

B**Z

Excelente calidad

Excelente protector de chasis

27.08.2025

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