Flood Barrier Sheet

Floods can strike suddenly without warning.
But now there is an easy flood prevention solution - ‘just set it up!’

A residential street submerged by floodwater up to the height of the building foundations
The flood barrier sheet installed across the full width of a house entrance

A flood barrier sheet placed at doorways to prevent indoor flooding during heavy rain. Easy for one person to install in about 5 minutes. Lightweight and compact, making it a practical flood prevention measure for households.

Front view of the installed flood barrier sheet, showing the adjustment pipe and the three jacks
Applicable Opening Dimensions:
85 cm to 125 cm
Height
25 cm
Applicable Water Level Height
up to 15 cm

※This product is designed to help prevent flooding, but it is not guaranteed to stop all water leakage.

Installation Method

With its lightweight and simple design, anyone can easily install it.

  • Measuring the width of the entrance opening by hand

    1. Confirm Installation Location

    Please measure the entrance (installation location) of your home.

  • A tape measure on the sheet showing the opening size plus 25 cm and the cutting position

    2. Cut to Opening Size + 25cm

    Measure the opening size of the entrance, then cut the water stop sheet with scissors to a size that adds 25cm to the measurement.

  • Folding the cut sheet inward from the right end with both hands

    3. Fold Inward to Match Opening Size

    Fold the cut water stop sheet inward from the right end to match the opening size.

  • Folding the sheet along its diagonal to form a triangle

    4. Fold Diagonally to Create a Triangle

    Fold the valley-folded water-blocking sheet along the diagonal to form a triangular shape.

  • Pressing the triangular folded sheet flat to fit the entrance opening

    5. Installation at the Opening

    Fit the folded sheet securely to the entrance opening.

  • Securing the triangular folded section with curing tape so that it does not open

    6. Attach with Curing Tape

    Use commercially available curing tape to firmly secure the triangular folded section so that it does not open, and fix the sheet in place. Please make sure that the water-blocking sheet has no tears or damage.

  • The hook-and-loop surface fasteners on the sheet, circled, being attached to the entrance door

    7. Install the Prepared Sheet on the Inside of the Entrance

    Install the prepared water-blocking sheet on the inside of the entrance. Peel off the three hook-and-loop fasteners and attach them to the entrance door.

  • Pointing at the length-adjustment screw on the main unit

    8. Preparing the Main Unit

    1. Loosen the length-adjustment screw so that the adjustment pipe can be pulled out smoothly.
    2. Turn the grip and confirm that the grip moves. After checking, return the grip to the start-line position.
    Tip: Make sure to place the main unit so that it sits on top of the water-blocking rubber.

  • Pulling out the adjustment pipe with both hands to match the width of the opening

    9. Attaching the Adjustment Pipe

    1. Pull out the adjustment pipe to match the full width of the opening where it will be installed.
    2. Tighten the length-adjustment screw firmly all the way to the base.
    3. A hole will be created in the adjustment pipe, fixing its length.
    Tip: Move the jacks to both sides and the center.

  • Turning the grip by hand to crimp it and fix it in place

    10. Crimping and securing the grip

    1. Turn the grip firmly to crimp it securely and fix it in place.
    2. Lightly shake it to make sure it is securely attached.

  • The three jacks along the bottom of the unit, circled, being turned to pressurize the floor

    11. Floor Pressurization

    Turn the jacks (three locations) to the right about 3-4 times to pressurize the floor.
    Please tighten and secure them in the order: both sides → Finally, tighten and secure in order starting with the central jack.

  • The flood barrier sheet fully installed at the entrance

    12. Completion

    Installation is now complete.
    When removing the unit, please remove it in the reverse order of installation.

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