Has anyone used a clear cost over this? If so, what kind is recommended? Reason I ask is due to marks left from bird droppings

USC makes a aerosol clear 3680061, However we cannot guarantee results, surface would also need to be properly prepped, scuffed to ensure adhesion

The spray comes out somewhat spotty/blotchy, is there a correct way to clean it or is it supposed to come out like this?

Well it souldn't be splotchy; if the can is going to sit unused for over 20 minutes, invert the can and spray onto scrap until cleared of spray. If the nozzle is somewhat clogged, clean it up with acetone and a very find pin. Fine abrasive, paper or steel wool should clean up the already sprayed. I don't know if acetone or some other solvent can be used after the paint has set up. Very clean surface is needed: no oil, grease, or hand prints. Oh yes, shake the can for at minimum 1 1/2 minutes before using. That marble in the bottom of can really need to sound sharp when it hits the bottom of the can. Also, best use it at room temperature. If cold, test it first on a piece of scrap. Read the directions about how far the can should be from the surface. And read about the time between sprays. I've used SEM 39143 for my old toy cars for years. Guess they can put out a bad can, so test spray scrap. Good luck.

Can this paint be used on metal trim with out primer?

It is for plastic trim. If you want to use it on metal I would use primer so it sticks well. It will be a little thick after a few coats.

Can cera trim....a ceramic rubber and plastic coating by Last Coat be applied over this when cured..thank you?

Most likely. Trim Black is a lacquer type paint and should not react negatively to being overcoated.

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🖤 Elevate your ride’s style with SEM’s sleek satin black trim spray—because first impressions last.

FLEXIBLE FINISH - Retains flexibility to prevent cracking on exterior automotive trim
FLAWLESS COVERAGE - Multiple light coats deliver even, satin gloss coverage without overspray
EFFORTLESS OEM MATCH - No primer needed—achieve factory-perfect trim in fewer steps
DURABILITY THAT LASTS - Full hardness and adhesion develop over 48 hours for long-term resilience
READY FOR THE ELEMENTS - Water-resistant formula protects your trim from weather and wear

SEM 39143 Trim Black Aerosol (2-pack) offers a 15 oz satin black spray paint designed specifically for automotive exterior trim. It requires no primer, matches OEM finishes, and cures fully in 48 hours to deliver durable, flexible, and water-resistant protection. Ideal for professionals and enthusiasts seeking a flawless, factory-quality finish with excellent adhesion and coverage.

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Brand	SEM
Color	Black
Finish Type	Satin
Size	12 Ounce (Pack of 2)
Item Volume	15 Fluid Ounces
Unit Count	30 Ounce
Paint Type	Spray
Specific Uses For Product	Exterior
Surface Recommendation	Automotive Trim
Indoor/Outdoor Usage	Outdoor
Item Form	Aerosol
Included Components	Masking Tape
Is Waterproof	True
Package Information	can
Color Code	#000000
Full Cure Time	48 Hours
Coverage	Full
Water Resistance Level	Water Resistant
Manufacturer	SEM
Dry Time In Hours	48
Item Weight	1.3 pounds
Product Dimensions	10.1 x 5.6 x 3 inches
Exterior	Paint
Manufacturer Part Number	39143_2PACK

SEM 39143 Trim Black Aerosol (2)

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