How to Replace a Garage Door Panel: Dent Repair, Single Panel Swap, and Full Section Replacement (2026)

Frequently Asked Questions

Can I replace just one panel on a sectional garage door?

Yes, most sectional garage doors (the type that roll up in horizontal sections) are designed so individual panels can be swapped without replacing the entire door. Each panel is connected to the adjacent panels by hinges, and the door rides in a track system that stays in place during panel replacement. The challenge is matching the panel: the replacement must be the same width, height, profile (the raised or recessed pattern), material (steel gauge, aluminum, wood), and ideally the same color or a color that can be painted to match. Many manufacturers sell replacement panels for their doors — you'll need the door brand and model, which is often on a sticker on the top panel or the torsion spring tube.

How do I find out what brand and model my garage door is?

Check for a manufacturer sticker on the top panel (inside the garage), on the torsion spring tube above the door, or on the door operator. The sticker usually has the brand name, model series, and a date of manufacture. Common brands include Clopay, Wayne Dalton, Amarr, CHI, and Raynor. Once you have the brand and model, contact the manufacturer directly or a garage door parts supplier with that information — they can confirm whether a replacement panel is still available. For doors older than 15 to 20 years, replacement panels from the original manufacturer may be discontinued, requiring a custom fabrication or full door replacement.

Is it worth replacing a panel or should I replace the whole door?

Replace only the panel when: the damage is limited to one or two sections, the door is less than 10 to 15 years old, matching panels are still available from the manufacturer, and the door structure (tracks, springs, opener) is in good condition. Replace the entire door when: the door is near the end of its useful life, matching panels are unavailable, multiple panels are damaged, or the cost of panel replacement approaches the cost of a new door. A new single-car steel door with installation runs $700 to $1,500. A replacement panel (where available) typically costs $100 to $300, making the panel swap economical when feasible.

What tools do I need to replace a garage door panel?

Panel replacement tools include: safety glasses, work gloves, a socket set and wrenches (for hinge bolts and roller bolts), a flathead screwdriver, a locking pliers or clamp (to hold the door in position), a stepladder, and possibly a second person to hold the panel while you reconnect hinges. The job does not require special garage door tools, but you need to disconnect the door from the opener and lock the door in the open position (using clamps or locking pliers on the track) to safely work on it. Never work under a door held only by the opener — always mechanically secure it.

How do I fix a minor dent in a steel garage door panel without replacing it?

For dents less than 2 inches across on steel panels: use a heat gun and compressed air method. Heat the dent area with a heat gun for 30 to 60 seconds (not so hot that the paint blisters — keep the heat gun moving). Immediately spray compressed air (the kind sold for cleaning keyboards) held upside down so it expels liquid CO2. The rapid temperature change causes the steel to contract and often pops the dent out. For larger dents: use a suction cup dent puller. For dents with creased edges (the metal is kinked, not just pushed in), the metal fibers are stretched and cannot be fully restored — panel replacement or a cosmetic filler and repaint is needed.

Can I paint a replacement garage door panel to match the rest of the door?

Yes, and for older doors where the existing color has faded, painting the entire door after panel replacement often gives the best result. For steel panels: clean with TSP or a degreaser, lightly sand with 120-grit to scuff the surface, apply an exterior metal primer, and topcoat with an exterior latex paint in the matching color. Many garage door manufacturers provide paint codes — check the brand's website or call their customer service line with the door model. If the exact paint code is unavailable, take a small scraping from an inconspicuous panel edge to a paint store for spectrophotometric color matching.

Replacing a garage door panel (section): (1) Determine if replacement is feasible: single dent or cosmetic damage on a structural panel is repairable; major dent that distorts the section or damage to the bottom section typically requires full section replacement.

A damaged garage door panel — whether from a car backing into it, a hailstorm, or the classic scenario of someone forgetting the door was down — is one of those repairs that feels more intimidating than it actually is. The sectional design of virtually every residential garage door in the United States is specifically meant to allow individual section replacement. You are not committed to a new door every time one panel takes a hit.

This guide covers the full range of panel repair options: popping minor dents without replacing the panel, swapping a single damaged section on a sectional door, and understanding when a panel replacement doesn’t make economic sense and a full door is the better call.

What You Need

• Replacement garage door panel / section — must match brand, model, width, height, and profile; $100–$300 from the manufacturer or parts suppliers
• Garage door hinge set — replace hinges at the same time if they’re bent or rusted; $15–$30 for a full set
• Garage door roller replacement — nylon rollers last longer than steel; upgrade while the door is disassembled; $15–$30
• Socket set and wrenches — 3/8 and 7/16 inch are the most common hinge bolt sizes; $20–$50 for a set if you don’t have one
• Exterior metal primer and paint — for finishing the replacement panel and painting to match; $15–$30
• Locking clamps or C-clamps — to secure the door open while working on it; $10–$20

Estimated total cost: $150–$400 for a single panel replacement including new hinges, rollers, and paint. Professional installation of a single panel section: $200–$500.

Step 1: Assess the Damage and Decide on Your Approach

Not every damaged panel needs replacement. Work through this assessment before ordering anything.

Minor dent (no crease, less than 2 inches): Attempt the heat-and-cold pop-out method (described in Step 2) before ordering parts. Many minor dents in steel panels can be resolved in 15 minutes with no parts cost.

Larger dent with a crease or buckle: The metal fibers have stretched and kinked. The dent won’t pop back. You can fill it with body filler (Bondo) and repaint for a cosmetic fix, or replace the panel. For a door in otherwise good condition, a Bondo repair is a legitimate option — it’s what autobody shops do with dented car doors, and the material is equally durable on a garage door.

Through-damage (the panel is punctured, bent at a sharp angle, or shattered): Panel replacement is necessary. A punctured or severely bent panel creates a structural weak point in the door that affects how it tracks and opens.

Multiple damaged panels: If two or more sections are damaged, get a quote for a full door replacement alongside the repair estimate. At two or three panels, the economics often favor a new door, especially if matching panels from the manufacturer are no longer in stock.

Step 2: Minor Dent Repair — Heat and Cold Method

For dents without a crease in a steel door panel, this technique works well and is worth trying before committing to a more involved repair.

You need a heat gun (a hair dryer on high also works, though slower) and a can of compressed air (the kind sold for computer keyboard cleaning — used upside down, it expels liquid CO2 at very cold temperatures).

Clean the dent area with soap and water, rinse, and dry. You need a clean surface for even heat transfer.

Apply heat. Hold the heat gun 6 to 8 inches from the dent and move it in slow circles. Heat for 30 to 60 seconds. The goal is warm metal — not hot enough to blister the paint or burn your finger if you touch it quickly, but clearly warm.

Apply cold immediately. Flip the compressed air can upside down and spray the center of the dent for 5 to 10 seconds. You’ll hear a hiss and see white frost form. The thermal shock causes the steel to contract sharply.

Observe. Many dents pop back fully or nearly fully in the first application. If not, wait 2 minutes for the panel to return to ambient temperature and repeat — up to 3 cycles. After the third cycle, if the dent hasn’t moved, it’s a creased dent and this technique won’t work.

Cost: $0 if you have a heat gun, $8 for a compressed air can.

Step 3: Surface Dent Repair with Body Filler

For dents too large for the heat method, or dents with a crease that won’t pop, body filler is the DIY cosmetic repair. This is the same material and technique used on car body panels.

Sand the dent area with 80-grit sandpaper to remove paint and create a surface the filler will bond to. Feather the sanding 2 inches around the dent edge.

Apply auto body filler (Bondo). Mix the filler with hardener per package instructions (usually a golf ball-sized amount of filler with a ribbon of hardener, mixed on cardboard). Apply over the dent with a plastic spreader, overfilling slightly. Work quickly — pot life is about 5 minutes at 70°F.

Sand after cure. The filler will be sandable in 20 to 30 minutes. Start with 80-grit, then 120, then 180. Feather the edges into the surrounding paint. The repair should be smooth with no visible edge when you run your palm across it.

Prime and paint. Apply a coat of self-etching metal primer over the repair area and 1 inch of surrounding panel. Let dry 30 minutes. Apply a topcoat of exterior latex paint matching the door color. You may need 2 to 3 coats to achieve full coverage. For the best match, paint the entire panel rather than just the repair spot — feathering paint on a large flat panel is nearly impossible to make invisible.

Step 4: Order the Replacement Panel

Before ordering, gather the following information:

Door brand and model: Check the manufacturer sticker on the top panel (inside the garage), on the spring tube, or on the operator housing. If the sticker is gone, a door professional can often identify the manufacturer from the panel profile, hardware, and hinge pattern.

Panel dimensions: Measure the damaged section’s width (should match the full door width — 8 feet, 9 feet, or 16 feet for a double-car door) and height (most residential panels are 21 inches or 18 inches high).

Panel profile: The raised or recessed pattern on the face of the door — short panel, long panel, flush, ribbed. This must match exactly or the door will look inconsistent.

Thickness and gauge: Standard residential steel doors are 24 or 25 gauge. Insulated doors have a layer of polystyrene or polyurethane between the steel skins — your replacement panel must have the same insulation type and R-value as the rest of the door.

Contact the manufacturer directly (their website or customer service line) with the model number for an exact match. Garage door parts suppliers (local and online) may also have the panel. Expect 1 to 4 weeks for a special-order panel. If the panel is out of production, a door manufacturer can sometimes fabricate a custom panel — call to ask.

Step 5: Disconnect the Opener and Secure the Door

Panel replacement requires working with the door partially raised and in a fixed position. The spring system is under tension and the opener must be disengaged.

Important safety note: The torsion spring above the door is under extreme tension and is dangerous to adjust or work near without professional training. This guide covers panel replacement, which does not require adjusting the springs. If you notice spring damage during this repair, stop and call a garage door technician.

Disconnect the opener. Pull the emergency release cord (the red rope hanging from the trolley carriage on the opener rail). This disengages the door from the opener so the door can be moved manually.

Raise the door manually to a position where the damaged panel is at a comfortable working height — roughly waist to chest level.

Secure the door open. Apply two locking pliers (Vice-Grips) to the vertical track on each side, just below the bottom roller bracket. This prevents the door from sliding down while you work. Never rely on the opener’s brake or a person holding the door.

Step 6: Remove the Damaged Panel

With the door secured:

Disconnect hinges at the top of the damaged panel. Each hinge is bolted through both the top of the damaged panel and the bottom of the panel above it. Use your socket set to remove the bolts connecting the two panels. You may need to support the panel above with a clamp while you work.

Disconnect hinges at the bottom of the damaged panel. Same process — unbolt the hinges connecting the bottom of the damaged panel to the top of the panel below it (or the bottom bracket if the damaged panel is the lowest section).

Disconnect the roller brackets. The rollers at each end of the damaged panel ride in the track. Remove the roller bracket bolts. The rollers will slide out of the track when the panel is freed.

Remove the panel. With all hinge and roller connections disconnected, the damaged panel can be lifted and pulled out. Have a helper assist — panels are awkward and run the full width of the door.

Step 7: Install the New Panel

Set the new panel in position. Slide it into the opening where the old panel was, aligning it with the panels above and below. If the new panel is identical to the old one, the hinge bolt holes should align exactly.

Attach the roller brackets. Insert the rollers into the track and bolt the roller brackets to the ends of the new panel. The rollers should sit in the track freely without binding.

Connect the hinges. Bolt the hinges between the new panel and the panel above it (at the new panel’s top), and between the new panel and the panel below it (at the new panel’s bottom). Snug all bolts finger-tight first, then torque to firm with a socket wrench — tight enough that the hinge doesn’t rock, but not so tight that it can’t articulate.

Remove the locking pliers and lower the door manually. Watch the new panel track through its full range of motion. It should move smoothly through the track system with no binding or rubbing.

Reconnect the opener. Raise the door to align the trolley carriage with the opener’s drive mechanism and push the carriage up to engage (you’ll hear it click). Run the opener through 2 to 3 full cycles to confirm the door operates normally.

Step 8: Prime and Paint the New Panel

Most replacement panels come primed but not painted, or in a standard white. Prime the new panel with exterior metal primer and topcoat to match the rest of the door.

For the best color match, paint the full new panel rather than trying to blend at a seam. If the existing door color has faded significantly, painting all panels the same new color gives the most uniform result. A roller and brush application typically gives a better finish on textured garage door panels than spray — spray can sag in the panel recesses.

Two coats of exterior latex in the chosen color, followed by a light sand with 220-grit between coats, produces a durable factory-like finish.

Related Reading

• How to Fix a Garage Door That Won’t Close — track alignment and sensor issues that can affect panel operation
• How to Lubricate a Garage Door — maintenance after the panel repair
• How to Replace Garage Door Weatherstripping — seal around the repaired panel for a complete repair