Dock Seal, Shelter, Bumper & Vehicle Restraint Repair in Columbia, SC
For dock seal, shelter, bumper, dock plate and trailer restraint repair in Columbia, SC, call (385) 325-7138 about a torn seal, a missing bumper, a bent dock plate, or a dock lock whose light won't change. Tell us which door and what you see.
Call to describe the problem—if the door is stuck open or the dock is down, say so first.
Independent service-request website. Calls may be shared with an independent commercial dock-and-door repair company. That provider confirms availability, scope, pricing, and service terms.
Facts checked: September 23, 2026.
This page covers the gear around a dock door, other than the door and the leveler. A vehicle restraint, also called a dock lock or trailer restraint, holds a trailer in place while it's loaded; designs engage the rear bar or a wheel. Seals, shelters, bumpers and portable dock plates are here too.
Example of what you might say: "The dock lock at door 9 in our West Columbia building stays on red after the trailer leaves, and I can give you the address."
Which piece of dock equipment is this?
Around most dock doors there's a seal or shelter, a pair of bumpers, sometimes a portable plate, and often a trailer restraint with red and green lights. Here's how to tell them apart.
| What you see | What it is | Go to | Not this |
|---|---|---|---|
| Foam pads that press against the trailer's sides and top | Dock seal | Seals and shelters | — |
| A frame with fabric curtains the trailer backs into | Dock shelter | Seals and shelters | — |
| A fabric curtain across the top of the opening | Head curtain | Seals and shelters | — |
| Rubber or steel blocks on the dock face | Dock bumpers | Bumpers | Not boat-dock bumpers |
| A loose metal plate or board set across the gap | Dock plate, dock board or bridge plate | Plates and boards | Not the built-in leveler — see dock leveler repair |
| A hook or arm that holds the trailer, with red and green lights | Trailer restraint ("dock lock") | Trailer restraints | Not car or truck seat-belt restraints |
| Red and green lights inside and outside the door | Dock signal lights | Trailer restraints | — |
| Wedges at the trailer's wheels | Wheel chocks | Trailer restraints | — |
If the problem is the dock door itself, see commercial garage & overhead door repair. If you're not sure what's wrong at the dock, start with loading dock and dock door repair in Columbia.
Dock seals and shelters
A dock seal presses foam pads against the trailer to close the gap. A dock shelter wraps the back of the trailer with curtains on a frame, without squeezing it. Both keep rain, bugs and outside air out, and heated or cooled air in.
| Type | How it works | Often chosen when | Common damage | Say this on the call |
|---|---|---|---|---|
| Compression foam seal | Foam pads squeeze against the trailer | A tight seal matters and trailers are fairly alike | Torn covers, crushed foam, pads pulled off | Which pad — top or side — and how torn |
| Inflatable seal | Air bags fill up around the trailer | A tight seal with trailers of different sizes | Tears; won't fill | "Inflatable"; is the blower running? |
| Dock shelter | Curtains wrap the back of the trailer | Full access to the trailer opening; mixed trailer sizes | Torn curtains; frame bent after a hit | Which curtain; is the frame bent? |
| Head curtain | A fabric curtain across the top | Closing the gap at the top | Torn or pulled down | "Head curtain" |
The "often chosen when" column is general guidance. The company that sees your dock confirms what fits.
| What you're seeing | What a qualified technician may check | Why it matters | What to mention |
|---|---|---|---|
| Daylight around a parked trailer | Pads, curtains, frame, how the seal lines up with trailers | Heated or cooled air leaks out | Door number; where the light shows |
| Rain or wind coming in | Top pad or head curtain, side pads | Wet floors and product damage | Door number |
| Torn fabric covers | Covers, foam, mounting | Tears grow fast once they start | Door number; how big |
| Crushed or flattened pads | Foam, backing, bumper depth | A flat pad doesn't seal | Door number |
| Curtain hanging or torn loose | Curtain, frame, fasteners | It can catch on a trailer | Door number; which curtain |
| Frame bent after a hit | Frame, mounting to the wall | It may not hold the curtains in place | Door number; what hit it |
Seals and shelters are made by several companies. Rite-Hite, Blue Giant, Pioneer, McGuire and Serco are examples we checked on their own websites on September 23, 2026. You don't need the brand to call.
Dock bumpers
Bumpers take the hit when a trailer backs in. They protect the dock wall, the leveler and the building. When they wear through, crack or come off, trailers can strike the building or the equipment.
- Kinds. Molded rubber blocks, stacked laminated rubber, and bumpers with a steel face.
- Signs of trouble. Worn through, cracked, missing, or bolts pulled out of the wall.
- What to mention. How many doors, and roughly how many bumpers.
- Not boat docks. These are loading-dock bumpers on commercial buildings, not bumpers on Lake Murray boat docks.
Ask whether replacement includes the bumper, mounting hardware and attachment work. If anchors have pulled out or the dock face is damaged, the equipment quote needs a clear boundary: concrete and structural repairs require a separate contractor. The replacement size and projection should suit the dock and trailer contact point.
Dock plates and dock boards
A dock plate or dock board is a portable bridge between the dock and the trailer. If one is bent, cracked, or missing its handholds or locking legs, stop using it and follow your facility's process for taking it out of service. The maker manuals we checked direct damaged plates and boards out of service, and one requires written factory consent before any repair.
Plate or board?
Blue Giant's glossary describes a dock plate as a plate with no added support members, typically used for lighter loads like foot traffic and hand trucks. It describes a dock board as a plate with beam-like side members that carry heavier loads such as forklifts and act as a curb (Blue Giant glossary).
ANSI MH30.2 is the industry standard for portable dock leveling devices like these (LODEM). Federal OSHA groups plates, boards, bridge plates and levelers together as "dockboards" (29 CFR 1910.21(b)). For how a plate differs from a built-in leveler, see dock plate or installed leveler?
What the federal rules expect of a dockboard
The federal dockboard rule has five parts (29 CFR 1910.26):
- It must be able to carry the biggest load it's meant for.
- Dockboards first put into service on or after January 17, 2017 must be built to keep vehicles from running off the edge, with an exception.
- Portable dockboards must be secured in place. If the employer demonstrates that securing them isn't feasible, enough contact with the surface must prevent movement out of a safe position.
- Something like wheel chocks or sand shoes must keep the trailer from moving while people are on the dockboard.
- Portable dockboards need handholds or another safe way to move them.
The forklift rule adds that dockboards must be secured before they're driven over, crossed carefully and slowly, and never loaded past their rated capacity (29 CFR 1910.178(n)(11)).
Repair or replace a portable plate or board?
A damaged portable plate or board needs a qualified assessment against the maker's instructions and the load it carries. Ask whether an approved repair is available or replacement is needed; don't authorize straightening or welding just from a photo.
| What you see or need | What the makers and rules say | Possible next step | Tell the company |
|---|---|---|---|
| Cracked welds, or a bent or twisted plate | Vestil: "Remove the dockboard from service…" and "Never make temporary repairs" | Out of service; a maker-approved repair, or a new plate | Size, maker if known, how it was damaged |
| Missing handholds or locking legs | OSHA addresses secure positioning and handholds or other safe handling means | Maker-approved parts, or a new plate | What's missing |
| No capacity label, or not sure it's rated for forklifts | OSHA: it must carry the load it's used for | Establish the maker's rating; replace it if suitability cannot be established | What crosses it: hand trucks, pallet jacks or forklifts |
| A change in use — heavier forklifts, new loads, different trailers | The rating has to fit the new use | A plate or board rated for the new use | What's changing |
| Any damage on a brand that requires factory consent | Copperloy: no repair "without the written consent" of the maker | The maker-approved route only | The maker's name, if known |
| Just the part, no service | — | Not covered by this line | Call a parts supplier or the maker |
Sources for the maker rules: Vestil dock plate manual and Copperloy dockboard manual. Portable plates and boards are made by Vestil, Copperloy and Pioneer, among others.
The plain rule: don't patch or weld a damaged plate in-house, and don't drive a forklift over a plate that isn't rated for it.
Pulled a plate out of service? Call and say what's wrong with it.
Trailer restraints (dock locks)
A trailer restraint holds the trailer at the dock while it's loaded, and it usually signals with red and green lights. If it won't grab, won't let go, or its lights won't change, stop using that door and call.
Types, in plain words
- Hook or arm restraints grab the trailer's rear bumper bar, often called the ICC bar.
- Wheel restraints hold one of the trailer's wheels instead.
- Manual or powered. Some are moved by hand. Powered ones are run from a control box inside.
Restraints are made by several companies. Rite-Hite (its Dok-Lok line), Blue Giant, Pioneer, McGuire and Serco are examples we checked on their own websites on September 23, 2026.
The lights
Restraints usually come with a light system: one set for the dock worker inside and one for the driver outside. In Blue Giant's system, for example, the outside red and green lights "advise the truck driver when it is safe to depart" (Blue Giant SVR303 manual). ANSI MH30.3 is the industry standard for vehicle restraining devices (LODEM).
| What you're seeing | What a qualified technician may check | Why it matters | What to mention |
|---|---|---|---|
| Won't grab the trailer | Hook or arm, sensors, controls | The trailer isn't held | Door number; trailer at the dock? |
| Won't let go | Hook or arm, controls, power | The trailer can't leave | Door number; is the trailer loaded? |
| Inside or outside light stuck on red, or showing the wrong color | Lights, sensors, controls, wiring | Drivers and dock workers go by those lights | Door number; which light, which color |
| Alarm keeps sounding | Controls, sensors | It may be warning about a real problem | Door number |
| Hook or arm bent after a trailer pulled away | Hook or arm, mounting, sensors | Structural damage | Door number; what happened |
| Leveler won't work and the restraint light looks wrong | Restraint and leveler controls | Some systems link the two | Door number; what each one does |
Some docks link the leveler to the restraint so the leveler only works when the trailer is held. See levelers and restraints that work together.
Dock lights and communication/interlock systems
A dock light illuminates the trailer; communication lights and interlocks control or signal the loading sequence. Report which one is failing and what the connected equipment is doing.
| Problem | What to describe | Ask the company |
|---|---|---|
| Trailer-interior light is out or damaged | Which bay and which light, from a safe place | "Does the quote cover the fixture, mounting or electrical supply?" |
| Inside and outside signals disagree | Which signal shows which color | "Will you check the signal system and its connected restraint?" |
| Door, restraint or leveler will not follow its normal sequence | What stopped first; any message already visible | "Who checks the interlock and confirms the whole sequence works after repair?" |
Do not bypass a sensor or interlock to keep loading. Electrical work and system testing need to be included in the provider's scope.
Chocks and restraints
The federal rules we cite call for measures such as wheel chocks or sand shoes to keep the trailer from moving while people are on the dockboard (29 CFR 1910.26). When forklifts are used, truck brakes must be set and wheel chocks or blocks put in place (29 CFR 1910.178(k)(1) and (m)(7)). Those sections don't require a powered restraint. Federal OSHA also recognizes equivalent mechanical protection when the restraint is installed, maintained and used as the maker directs. Vehicle/employer jurisdiction and SC OSHA requirements still matter; the facility's safety lead should confirm the applicable program, not treat any dock lock as permission to drop other precautions. Blue Giant's manual tells owners to review the need to use wheel chocks along with its restraint, because trailer rear bars differ in strength and construction. More reading: vehicle restraints vs. wheel chocks.
Don't override a restraint or its lights to let a trailer go. Follow your facility's process and call.
Light stuck on red, or the hook won't let go? Call and give the door number.
Something's damaged right now — what should we do?
Stop using that door, keep people clear of the damaged equipment, and follow your facility's process for taking the bay out of use. Call (385) 325-7138, say which door and what's damaged, and say whether a trailer is there.
What to say
- The door number
- Which part: seal, shelter, bumper, plate or restraint
- What happened: a trailer pulled out, a forklift hit it, or it wore out
- Whether a trailer is at the dock, and whether it's loaded
The independent repair company confirms availability, timing, and any charges for urgent or after-hours work.
Door down with a trailer on it? Say that before anything else.
What we take calls about — and what we don't
Covered: dock seals, shelters and head curtains; dock bumpers; portable dock plates, dock boards and bridge plates; trailer restraints; dock lights and signal systems — at warehouses, distribution centers, plants, cold storage, food and beverage sites and other commercial buildings.
Not covered:
- Residential equipment and truck or trailer cargo doors
- Pedestrian entry doors, their locks and closers, and swinging fire doors
- Other slab or structural repairs
- Boat-dock bumpers, seals and lifts
- Seat-belt and safety restraints in cars and trucks
- Parts-only orders
- Concrete dock-face and dock-pit repairs
Built-in levelers and dock lifts are on the dock leveler page. Dock doors are on the overhead door page.
What happens when you call?
Uptime Dock & Door is an independent commercial service-request website for loading-dock and commercial door repair. You say what's damaged and where the building is. The call may be shared with an independent commercial dock-and-door repair company, which confirms whether it can help, plus the scope, price, timing and its own terms.
- You call (385) 325-7138 and say which door, which part, and the address.
- Your request may be shared with an independent commercial dock-and-door repair company.
- That company confirms the details — scope, availability, price and its own terms. Uptime doesn't do the repair, set the price or send anyone.
If you reach voicemail, leave the facility address, the door or dock number if known, what's wrong, and a callback number.
Commercial facilities are not charged by Uptime to access the public website or use its published service-request paths. For more, see how Uptime works and how loading dock repair calls work.
Door number and address in hand? You're ready to call.
Useful to have — not required
The address, the door number and what's damaged are enough. These can save a question or two:
- Which doors, and which parts at each one
- Seal or shelter, from the table above
- Plate or board size and maker, only if they're on file
- Restraint type — hook or wheel — and what the lights show
- Whether a trailer is at the dock
- Who approves the work: the tenant, the landlord or the property manager
What moves the price on dock equipment?
We can't quote dock equipment work from a web page. The price depends on the part, the damage, parts, and access. Here's what to ask before you authorize work.
Price words, briefly. A service-call or diagnostic fee is the charge to come look. A starting price is the floor for a simple job. A scoped fixed price covers a written list of work. An estimate can change once the work starts. The final quote sets the agreed scope and price; the invoice should reflect it and any changes you approved.
| What affects the price | Why it moves the number | Ask this |
|---|---|---|
| The visit | There may be a charge to come out and look | "Is there a service-call charge, and does it count toward the repair?" |
| Pad or curtain vs. the whole seal or shelter | One pad costs less than a full seal | "Can you replace just the torn pad?" |
| Frame damage | A bent shelter frame is extra work | "Is the frame part of this price?" |
| Bumpers | The number and type of bumpers, and wall damage | "How many bumpers, and what type?" |
| Plates and boards | Maker-approved repair vs. a new plate, and its rating | "Repair or replace — and what rating?" |
| Restraint type | Hook, arm and wheel restraints use different parts | "What type are you pricing?" |
| Controls, lights and wiring | Electrical work may need a licensed electrician | "Who does the electrical work?" |
| Parts on hand | Special-order parts can mean a second trip | "What's the lead time?" |
| Downtime and access | A trailer at the door can limit access | "Can you work around our schedule?" |
Get it in writing before work starts
- What gets repaired or replaced, door by door
- Parts and labor
- Any service-call or trip charge
- The company's own warranty terms
- Who handles any permit or electrical work
- For regulated construction over $10,000, the company's South Carolina contractor license number and classification
Ready to talk it through? Call and name the doors.
Planned maintenance for dock equipment
Seals, shelters, bumpers, plates and restraints wear with use. Planned checks can catch torn pads, worn bumpers and restraint problems before they stop a door.
If you want dock equipment checked on a schedule, ask for these in writing:
- Which doors and which equipment are included
- What gets checked at each door
- How findings are reported, and how urgent items are flagged
- That repairs found on a visit are priced and approved separately
You can ask to cover dock equipment, levelers and doors on the same visit. See leveler maintenance and commercial garage door maintenance.
Rules that apply to dock equipment here
Federal OSHA rules cover dockboards and trailer movement at the dock, and South Carolina runs its own OSHA program. A state contractor license comes into play for regulated general or mechanical contracting when the total cost of construction is more than $10,000.
- OSHA. The dockboard and forklift rules are summarized above (1910.26; 1910.178). South Carolina's standards page lists the federal Part 1910 general industry rules along with South Carolina's own changes.
- Industry standards. ANSI MH30.2 covers portable dock leveling devices, and MH30.3 covers vehicle restraining devices (LODEM).
- License. South Carolina requires a contractor license for regulated general or mechanical contracting when the total cost of construction is more than $10,000, and electrical work is its own licensed category (S.C. Code Title 40, Chapter 11). A new powered restraint or new dock lights may mean electrical work, so ask who holds that license.
- Permits. Ask the permit office how it treats the repair, replacement and any electrical work at this address. The permit office depends on the building's address — find yours.
The provider and the issuing office confirm what applies to your job.
Where we take dock equipment calls
We take calls about commercial buildings across Richland, Lexington, Kershaw, Fairfield, Calhoun and Saluda counties. That covers Columbia, West Columbia, Cayce, the Saxe Gotha and airport areas, Lexington, Irmo, Blythewood's I-77 parks, the Pineview Road area, Camden and Lugoff. If the call is shared with an independent repair company, that company confirms whether it serves the address.
Town pages: West Columbia & Cayce · Blythewood · Camden, Lugoff & Elgin · every county and town
Dock equipment questions from Columbia facility managers
Is a dock lock the same as a trailer restraint? Yes. "Dock lock," "trailer restraint," "truck restraint" and "vehicle restraint" are names for the same kind of device that holds a trailer at the dock.
Can we keep using a bent dock plate? No. Stop using it and follow your facility's process for taking it out of service. Some makers direct damaged plates out of service, and one requires written factory consent before any repair.
Can a bent dock board be welded and used again? Don't assume so. One maker's manual says never make temporary repairs, and another requires written consent before any repair. The maker and a qualified technician decide, and a new board may be the answer.
Does OSHA require a vehicle restraint? The federal rules we cite call for measures such as wheel chocks or sand shoes, not a powered restraint. Whether to add a powered restraint is your facility's decision.
How do we know if we have a seal or a shelter? Seals are foam pads that squeeze the trailer. Shelters are curtains on a frame that wrap around it. The table above shows both.
Do you take calls about boat-dock bumpers? No. Only loading-dock equipment on commercial buildings.
Get the dock back in service
Tell us which door, which part, and whether a trailer is there. If the dock is down, lead with that.
Independent service-request website. Calls may be shared with an independent commercial dock-and-door repair company. That provider confirms availability, scope, pricing, and service terms.
About Uptime · How service requests work
Sources
Sources checked September 23, 2026.
-
Federal safety rules (eCFR): 29 CFR 1910.21, 1910.26, 1910.178
-
State safety program: SC OSHA standards
-
Industry standards: LODEM (MH30 standards)
-
Licensing: S.C. Code Title 40, Chapter 11
-
Maker documents: Blue Giant glossary; Blue Giant StrongArm SVR303 owner's manual, rev. 3.11 (March 13, 2026); Vestil AHTD/TAS dock plate manual (rev. 11/11/2025); Copperloy STR dockboard manual
-
Maker product lines: Rite-Hite; Blue Giant; Pioneer; McGuire; Serco
-
OSHA enforcement context: equivalent mechanical restraint protection; wheel-chocking jurisdiction clarification (March 7, 2011)