How to Apply Floor Marking Tape So It Stays Down
When a floor tape line lifts in the first week, people blame the tape. At JPPL we have been making packaging since 1997, adhesive tapes included, and I can tell you the floor is usually the real culprit. Dust, damp concrete, a cold morning or a line pulled tight while laying it will defeat even a good adhesive.
I will give you the short version first. Put the tape on a clean, dry, room-temperature floor, never stretch it, press it hard, and keep wheels off it for 24 hours. The rest of this post explains each step, plus the two places where tape lines fail most: corners and forklift turns.
Is your floor ready for tape?
Check three things before you open the box. I would not skip any of them.
- Dust. Unsealed concrete keeps shedding a fine grey powder. Press a short piece of any packing tape on the floor and pull it off. If the sticky side comes back grey, the tape will stick to the dust, not the floor. Scrub and vacuum, and on a badly dusting floor apply a concrete sealer first.
- Oil and grease. Near machines and loading docks, floors carry a thin oily film you cannot see. Wash with a detergent solution, rinse with clean water and let it dry completely. Do not use a cleaner that leaves a shine behind.
- Moisture. New concrete and ground floors in the monsoon hold water. Tape a square of plastic film, about 45 cm x 45 cm, flat on the floor with its edges sealed, and leave it overnight. If you see droplets under the film in the morning, or the concrete has darkened, the floor is too damp for tape. Wait, or ventilate the area for a few days.
The plastic sheet check is an old method used by flooring contractors. Any clear film works, for example a piece of LDPE shrink film.
Painted and epoxy floors take tape well, as long as the coating is fully cured and clean.
Polished stone and vitrified tiles in offices are also fine.
What temperature should the floor be?
A pressure-sensitive adhesive needs to flow slightly into the microscopic texture of the surface to grip. When it is cold, it stiffens and only touches the high points.
We see the same behaviour with our packaging tapes in winter.
In North India in December, a warehouse floor at 7 in the morning can feel like ice. Do the installation in the afternoon instead, when the temperature has recovered. If the floor feels cold to your palm, wait. Cold rooms and freezer areas need tapes designed for low temperatures, so ask us before you order.
Heat causes a different problem. Rolls stored on a hot mezzanine or in a delivery van in May can lose shape and their edges can ooze. Keep your inventory of rolls in a cool, dry place and bring it to the work area an hour before you start. Every adhesive tape we make prefers that storage.
How do you lay a straight line?
- Mark the line first. A chalk line or a string tied between two nails is enough. Marking by eye always drifts after 5 m.
- Peel and lay about 1 m at a time. Do not unroll the full 25 m and then try to steer it. It never ends up straight.
- Never stretch the tape to make it straight. Plastic film has memory. A stretched line shrinks back over the next day or two, and the ends lift.
- Cut with a sharp blade, not by tearing. Round off the corners of each cut end with scissors. A square corner lifts first, because the wheels and shoes catch it.
How hard should you press?
Harder than you think.
The bond of this kind of adhesive develops with pressure and time, not with heat or water.
Use a hand roller if you have one. We recommend a rubber roller, the kind used for wallpaper or laminates. If not, walk the full line heel to toe, then push a loaded trolley over it twice. Light finger pressure is not enough.
Then give it time.
Keep forklifts and pallet trucks off a new line for 24 hours. Foot traffic is fine straight away.
How do you handle corners and joints?
Do not bend the tape around a corner. It creases, and a crease is a ready-made lifting point. I would rather you spend 2 extra minutes cutting. Cut two pieces and butt them together, or overlap them with a neat 45 degree cut.
On a traffic lane, think of roof tiles. Overlap the joint so the top piece points in the direction of travel. Then wheels roll over the edge instead of pushing into it.
Leave no gaps between pieces. A gap collects dirt and water, and the edges around it start to peel.
What about forklift lanes?
This is where tape has a hard life, and I want to be fair about it.
We would rather you hear it from us than discover it in your warehouse.
A forklift tyre turning on the spot scrubs the floor like an eraser. No tape lasts long under that. So keep your lines away from the exact spots where trucks pivot, such as rack ends and dock doors. At those points, I would use paint or a heavy-duty tape made for forklift traffic, and we can suggest one if you tell us the truck type. Our PackSmith floor marking tape is a 2 inch, general-purpose, yellow line for walkways, zones and packing areas, and that is where it performs best.
When a section gets damaged, do not pull up the whole line. Cut out the bad part, clean the floor under it, and lay a new piece with a small overlap. Keep a spare roll for this.
One more caution.
Ride-on scrubbers with aggressive solvent cleaners attack tape edges over time. Plain water or a mild detergent is enough for a taped floor.
Which mistakes should you avoid?
- Taping a floor that was mopped 20 minutes ago.
- Laying the line on top of old, peeling paint.
- Pulling the tape tight to straighten it.
- Letting forklifts on before 24 hours.
- Running a line through a forklift turning point and then calling the tape weak.
Avoid these five and I am sure your lines will last far longer than you expect.
If you are still deciding between tape and paint, read our comparison of floor marking tape, paint and epoxy. For what each colour should mean, see our guide to floor marking colours.
If a line lifts within the first week, send us a photo of the floor and of the back of the lifted piece. In most cases we can tell you the cause from those two pictures.
