Removing Old Lettering: The Clean Way

Why the old lettering has to go

A used work truck usually arrives still advertising its last owner. Customers call the old business, the truck looks like it belongs to someone else, and the door no longer identifies who is operating it.

Where the federal marking rule applies, the door has to show your legal name or single trade name as it appears on your MCS-150 and your own USDOT number, on both sides of the power unit (49 CFR 390.21T). The last owner's name and number do nothing for you.

California is explicit: after a change of ownership, the previous company's name must be removed or covered within 60 days (CVC 27900(d)). See California DOT decal rules. The Missouri and Oklahoma intrastate marking rules put it on the seller: the carrier selling the truck is responsible for removing its markings (7 CSR 265-10.025(3); OAC 165:30-3-17(e)).

What you need

• Heat: a heat gun on its low setting, or a hair dryer. Warm vinyl lets go; cold vinyl cracks into chips.
• Plastic razor blades: they lift edges without cutting paint. Never put a metal blade on paint.
• Adhesive remover: a citrus-based remover labeled safe for automotive paint, plus isopropyl alcohol for the final wipe.
• Soapy water and clean microfiber cloths.

Step by step

• 1. Wash the panel. Grit caught under a scraper is what scratches paint. Wash, rinse and dry.
• 2. Warm one letter at a time. Hold the heat 6-8 inches off and keep it moving until the vinyl is warm to the touch, not hot. Go easy near rubber seals, plastic trim, lights and repainted panels.
• 3. Lift and peel low. Start a corner with a plastic blade, fold the vinyl back on itself and pull slowly at a sharp angle, close to the surface. Reheat when it starts to tear.
• 4. Shave the stubborn bits. Old, sun-baked vinyl breaks into flakes. Hold the plastic blade nearly flat and work small sections, warming as you go.
• 5. Take off the glue. Spray the remover, let it sit as the label says, then wipe and scrape the residue. Test it on a hidden spot first.
• 6. Final wipe. Clean the panel with isopropyl alcohol. Remover left on the paint keeps new vinyl from bonding.

On bare glass, a razor scraper held flat is the usual tool. Keep any blade off tint film and away from rear-window defroster lines.

The ghost problem

Paint around lettering weathers for years while the paint under the vinyl stays protected. Peel the letters and the outline is still there: the ghost.

• Light ghosting often blends out with a clay bar and a polish, by hand or with a dual-action polisher.
• Deep ghosting on faded paint usually won't polish out. Plan to cover it.

Measure the ghost before you order: overall width, height, and where it sits on the door. Put those numbers in the replace my decals form and we size the new layout to cover the old footprint, then show it on the proof.

When to cover instead of remove

• The truck has to work tomorrow. Cover the old name now and remove it properly when you have a free afternoon. California's rule allows removed or covered.
• The old lettering is painted on. Paint doesn't peel. That is a body-shop job, or a cover.
• The ghost won't polish out. New lettering sized over the footprint hides it.

Thin cut letters laid straight over old letters let the old edges show through. To cover old lettering cleanly, put a solid background panel over the whole area and letter on top of that. Then follow the install guide for the new set.

Decals for this

Off with the old, on with the new:

• Custom Truck Door Lettering, from $18.95: your business name, sized to cover the old footprint.
• Full Compliance Decal Kit, from $54.95: name, USDOT, MC and GVW cut to match for a clean-slate door.

Lettering for your trade

Pages written for one trade's vehicle, customers and state rules: hvac van lettering, landscaping truck lettering, locksmith van lettering. See every industry.