How to Install a Black Expandable Barrier

Black expandable barriers provide a practical way to control pedestrian access and temporarily restrict residential garages, home workshops, storage spaces and roller-door entrances.

They are made from lightweight aluminium tubing and can be extended across an opening when required, then retracted when access is needed.

Expandable barriers are intended for access control. They do not provide the same level of burglary protection as a rigid steel security gate.

Black Expandable Barrier Components

• Expandable aluminium barrier panel
• 1 × 200mm top fixing bracket
• 1 × 130mm floor fixing bracket
• 1 × 200mm locking bracket
• 1 × Anti-Luce wall fastener, also known as a drop latch or trailer latch
• Swivel castor with foot lock

The black barrier uses a top-and-floor mounting system to secure its fixed side.

Note: Screws and fixings are not included. An 8mm Dynabolt is recommended for suitable concrete surfaces, while a suitable hex-head wood screw is recommended for fixing into structural timber. Always confirm that the fixing type and length are appropriate for the mounting surface.

Step 1: Measure the Entrance

Before choosing or installing the barrier, measure the area you want to cover.

Measure:

• The full width of the entrance
• The required barrier height
• The available floor fixing area
• The available upper fixing area
• The space available when the barrier is retracted

Measure the width from the intended fixed side to the locking point on the opposite side. Confirm that the selected barrier can cover the full opening without exceeding its maximum extended width.

Step 2: Check Door and Roller-Door Clearance

Position the barrier far enough away from the door or roller door so that both can operate without touching.

Before drilling:

• Open and close the door or roller door
• Check handles, hinges and tracks
• Look for power boxes, pipes and wall fittings
• Confirm that the retracted barrier will not block the opening
• Make sure the roller door cannot lower onto the barrier

If a roller door rests on the barrier, it may damage the aluminium panel or place unnecessary strain on the roller-door motor.

The barrier may sometimes be positioned behind a roller-door track where a suitable structural fixing surface is available.

Step 3: Choose the Fixing Direction

The barrier may be positioned using either a face-fix or sill-fix arrangement.

Face Fix

The upper bracket is secured onto the front face of the wall, frame or supporting structure.

Face fixing may be suitable when:

• A strong, flat surface is available
• The barrier needs to sit in front of the entrance
• There is limited space inside the opening
• The barrier must remain clear of a roller-door track

Sill Fix

The upper bracket is secured into an internal, side-facing or rear surface.

Sill fixing may be suitable when:

• Structural timber is available behind the frame
• A concrete wall or lintel is available
• The barrier can sit further back
• A straighter or stronger fixing position is available

Choose the method that provides the strongest practical fixing point while keeping the barrier clear of moving doors and other obstacles.

Step 4: Position the Top and Floor Brackets

The black expandable barrier is secured using:

• One 200mm top fixing bracket
• One 130mm floor fixing bracket

Position the floor bracket at the base of the fixed side and align the top bracket directly above it. Check that:

• The barrier is straight and vertical
• The floor bracket sits on a solid, level surface
• The upper bracket connects to structural timber, concrete or another suitable material
• The moving slides remain clear of both brackets
• The barrier can extend and retract without rubbing
• The swivel castor remains in contact with the floor

Unlike the yellow barrier, the black version uses top and floor mounting points rather than several individual side brackets.

Step 5: Mark, Drill and Secure the Fixed Side

Once the position is confirmed:

1. Hold the barrier upright.
2. Confirm that it is vertically aligned.
3. Position the floor bracket.
4. Position the top bracket directly above it.
5. Mark the fixing holes.
6. Confirm that the marks align with structural material.
7. Drill the required holes.
8. Secure both brackets.
9. Recheck the alignment before fully tightening the fixings.

For concrete, use suitable 8mm Dynabolts where appropriate.

For timber framing, use suitable hex-head wood screws of the correct diameter and length. 

 

Step 6: Test the Alignment

After securing the fixed side, slowly extend the barrier across the entrance.

Use the 200mm locking bracket as the operating handle. Allowing the locking bracket to catch inside the barrier may damage or bend the castor-side post.

Check that:

• The barrier travels in a straight line
• The swivel castor rolls smoothly
• The barrier does not twist or lean
• The slides move freely
• The locking side reaches the intended position
• The barrier remains clear of the door or roller door
• The top and floor brackets remain secure

   

Step 7: Install the Anti-Luce Fastener

The Anti-Luce wall fastener may also be called a:

• Drop latch
• Trailer latch
• Anti-Luce fastener

Install it on the opposite side after extending and aligning the barrier.

1. Extend the barrier to the required width.
2. Hold the locking bracket against the opposite fixing surface.
3. Position the fastener between the barrier slides.
4. Aim for a central position where practical.
5. Leave sufficient clearance around the moving parts.
6. Confirm that the locking bracket can drop fully over the fastener.
7. Mark and drill the fixing holes.
8. Secure the fastener to a structural surface.
9. Extend and retract the barrier again to test it.

Locking the Barrier

A padlock can be fitted through the lower section of the Anti-Luce fastener.

Use a padlock with a shackle no greater than 8mm in diameter.

For the strongest locking position:

1. Drop the locking bracket completely over the fastener.
2. Insert the padlock through the lower locking hole.
3. Confirm that the bracket cannot be lifted.
4. Lock the padlock.
5. Test the barrier.

Using the lower locking hole helps prevent the bracket from lifting and creating a gap.

Step 8: Check the Swivel Castor

The swivel castor supports the moving side of the barrier.

Confirm that:

• It stays in contact with the floor
• It rolls smoothly across the opening
• The barrier remains upright
• The foot lock operates correctly
• The barrier does not pull against the mounting brackets

Uneven flooring may affect movement, so test the barrier across its full travel distance before completing the installation.

Expandable Barriers vs Security Gates

A black expandable barrier is primarily an access-control and pedestrian-management product. It can help:

• Restrict entry into a garage or workshop
• Control pedestrian movement
• Close off a roller-door entrance
• Create a visible boundary
• Temporarily restrict residential access
• Separate visitors from work or storage areas

However, its aluminium construction and open diamond pattern remain flexible.

Do not use it:

• As a substitute for a steel security grille
• Directly in front of a window requiring burglary protection
• As the only protection for a high-risk entrance
• As a child-safety or fall-prevention barrier
• Where valuables can be reached through the openings

For stronger residential protection, consider a steel security gate such as Saftidor.

Final Installation Check

Before using the barrier, confirm that:

• The entrance was measured correctly
• The top and floor brackets are secure
• All fixings connect to structural material
• The barrier is straight and vertically aligned
• It does not interfere with the door or roller door
• The moving slides have sufficient clearance
• The swivel castor moves smoothly
• The locking bracket works correctly
• The Anti-Luce fastener is secure
• The padlock fits through the lower locking point
• The barrier extends and retracts without catching

Stop using the barrier if any bracket, rivet, castor or fixing becomes loose or damaged.

Need Installation Help?

Send DIY Xpanda:

• A clear photo of the entrance
• The opening width
• The required barrier height
• Photos of the floor and upper fixing surfaces
• Details of whether the surfaces are timber, concrete or another material
• Information about nearby doors, roller-door tracks or obstacles

This will help confirm the suitable barrier size, fixing direction and installation position.

Watch the Black Expandable Barrier installation video for a more detailed demonstration.

Due to the size of the barrier shown in the installation video, an additional fixing bracket was installed to reinforce the barrier and improve its durability.