Can You Use Ceramic Spray on Door Jambs, Trunk Sills, and Other Hidden Areas?

You’ve coated the paint, the wheels, maybe even the trim. But what about those dirty, often-overlooked zones—like door jambs and trunk sills?

Good news: ceramic spray works great there, too. Using a product like Tough As Shell on these hidden areas adds real protection, makes them easier to clean, and keeps your entire vehicle feeling dialed-in.

Why Ceramic Spray Is Great for Door Jambs and Sills

Repels dirt, grease, and fingerprints
Protects against moisture and light corrosion (especially in rainy climates)
Makes future cleaning faster and easier
Leaves a clean, non-greasy finish that feels OEM—not oily or shiny

Other Great Places to Use Ceramic Spray

Trunk edges and loading sills
Gas cap surrounds
Inner hatch lips
Tailgate interiors (for trucks and SUVs)
Hood channels and fender undersides

How to Apply Ceramic Spray in Tight or Hidden Areas

Clean the area thoroughly with The Super Soaper or a gentle all-purpose cleaner
Dry with precision using the Everyday Microfiber Towel
Spray Tough As Shell onto a towel or foam applicator (never directly onto hinges or trim)
Wipe into crevices and high-touch areas like latches, sill plates, and hinges
Buff lightly to ensure an even finish with no residue or streaks

How Long Will It Last in These Areas?

Expect 4–6 weeks of protection in most hidden areas, depending on use and environment. Reapply monthly or after every deep clean for best results.

Pro Tips

Use a small foam pad or folded towel to reach tight gaps
Don’t overapply—light, even coats are all you need
Avoid hinges that need grease—ceramic is for protection, not lubrication

Testimonial

“Started using Tough As Shell on my door jambs and trunk lip—those areas stay cleaner and wipe down with almost no effort now.” – Brian T.

Detail Like a Pro—Even Where People Don’t Look

The difference between a quick wash and a fully detailed car? The hidden areas. Protecting your jambs, sills, and edges with ceramic spray is one of the easiest ways to maintain a clean, complete finish.

✅ Coat every corner with Tough As Shell Ceramic Spray

✅ Clean and prep those tight spots with The Super Soaper and wipe in with the Everyday Microfiber Towel

Need help applying ceramic in tricky spots? Read: Spot Applying Ceramic Spray: What You Need to Know