Misconception 1: Using a high-pressure water gun to forcefully clean thoroughly
Misconception: Believing that the higher the water pressure, the cleaner the flushing, especially for dust accumulation in hollow grids.
Technical facts:
The pressure of high-pressure water guns is usually between 5-15MPa, while the lateral impact resistance of suspended floor locks generally does not exceed 3MPa. High pressure water cutting into the interior of the lock buckle through the gap will forcibly support the gap, resulting in two consequences: first, water entering the bottom of the floor cannot evaporate for a long time, leading to the growth of mold; The second is plastic deformation of the lock buckle, which increases the gap over time and produces abnormal noise when stepped on.
Actual test data: After flushing the same area three times with an 8MPa high-pressure water gun, the pulling force of the lock buckle decreased by about 25%.
The correct approach:
Use regular tap water hoses (pressure ≤ 0.5MPa) for daily cleaning, paired with wide mouthed fan-shaped nozzles.
Stubborn stains should be lightly brushed with a soft bristled brush first, and then rinsed with normal pressure water. The pressure standard should be "no stinging sensation when the water column hits the back of the hand".
Misconception 2: Using laundry detergent, dishwashing liquid, or strong alkaline cleaners
False cognition: think that the stronger the decontamination ability is, the better the effect will be. The more foam are, the better the effect will be.
Technical facts:
Laundry detergent and most dishwashing detergents are alkaline (pH 9-11), while polypropylene materials have good acidity and alkalinity, but the anti UV agents (HALS) and antioxidants added to the floor will accelerate precipitation in strong alkaline environments. After precipitation, white powder appeared on the surface (mistakenly thought to be stains that were not cleaned), but in reality, it was due to the loss of additives, which shortened the weather resistance life of the floor by 30% -50%.
More seriously, alkaline residues can reduce the friction coefficient of the floor surface. Tests have shown that after washing with laundry detergent and rinsing with clean water, the dry friction coefficient decreases from 1.3 to around 1.0, which is equivalent to lowering the standard from a basketball court to a sidewalk.
Aromatic solvents such as banana water and toluene can directly swell polypropylene, causing surface stickiness and mesh deformation.
The correct approach:
Use neutral cleaning agents (pH 6.5-7.5) specifically labeled as "suitable for PP/PE" products.
Simple oil stains can be cleaned with a 5% concentration of baking soda solution (pH about 8.0, relatively mild), and then thoroughly rinsed with plenty of water.
Daily dust: Rinse with clean water and use a soft bristled brush is sufficient.
Misconception 3: Waxing or polishing to increase aesthetics
Misconception: Believing that floors, like wooden floors or PVC flooring, require regular waxing and maintenance to appear as shiny as new.
Technical facts:
The sliding performance of suspended flooring depends on the micro frosted texture of the surface (with a concave convex scale of 0.05-0.2mm). After waxing, paraffin or polymer wax will fill in these microscopic textures, making the surface smooth. The dry friction coefficient can drop sharply from 1.3 to below 0.6, which means that athletes slip directly during emergency stops.
The wax layer will also seal the edges of the engraved spaces, hindering drainage. Waxed floors can accumulate water for 3-5 times longer on rainy days.
Polypropylene itself has good gloss retention and does not require additional polishing. Waxing can actually absorb dust and make the floor quickly dirty.
The correct approach:
No form of waxing, polishing, or oiling is allowed.
Just maintain a natural state. If the surface loses its luster due to long-term wear and tear, it does not affect its performance and does not require treatment.
If there is a need for aesthetics (such as for performance activities), a one-on-one PP water-based heart service agent (non wax) can be used, sprayed and wiped to restore luster without reducing smoothness - but the cost is high and it is not recommended for regular use.
Misconception 4: Use a steel wire ball or hard brush to scrub vigorously
Misconception: Believing that the harder the force and the harder the brush, the better the cleaning effect.
Technical facts:
The Mohs hardness of steel wire balls is about 5-6, while the surface hardness of polypropylene is only 2-3 Mohs. Wire ball scrubbing will directly cut off the surface frosted texture, leaving visible scratches to the naked eye. After a few washes, the area will become a "smooth zone", forming a difference in slip performance compared to the surrounding area.
Hard nylon brushes (bristle diameter>0.5mm) also accelerate texture wear. Tests have shown that after scrubbing with a hard brush once a month, the surface friction coefficient decreases by about 40% after 6 months.
The worn surface cannot be serviced with care, only the floor can be replaced.
The correct approach:
Use a soft bristled brush (bristle diameter ≤ 0.3mm, such as a bristle brush or soft nylon brush) or a regular mop.
The pressure applied during brushing should not exceed 10% of the floor's compressive strength (about 0.2MPa, equivalent to the feeling of light finger pressure).
For sticky stains such as chewing gum: first use frozen spray (or ice) to make them brittle, and then gently remove them. Do not rub them hard.
Misconception 5: Only clean when the venue is visibly dirty
Misconception: Believing that the floor is "dirt resistant" and does not need to be cleaned if obvious stains are not visible.
Technical facts:
The hollow structure of the suspended floor can hide small sand particles and dust. Although these particles are not easily noticeable to the naked eye, they have an abrasive effect - when athletes step on them, sand particles roll between the sole of the shoe and the floor, wearing down the surface texture like sandpaper.
More hidden hazards: Fine sand falling into the gap between the lock buckles hinders the micro movement of the floor during thermal expansion and contraction, leading to stress concentration and accelerating the fatigue fracture of the lock buckles.
Accumulated organic (based on actual reports) dirt (sweat stains, food residues) can nourish biomass and mold, especially in damp environments inside the engraved space, which may produce odors.
The correct approach:
Outdoor venue: Rinse once every 2 weeks (once a week during the rainy season).
Indoor venue: Vacuum or mop once a week.
High intensity use (daily>6 hours): Clean surface dust at a suitable speed every 3 days, and rinse at a weekly scale.
After flushing, confirm that the drainage is unobstructed to avoid water accumulation.
Misconception 6: The use of steam mop for high temperature is mainly based on practical considerations
Misconception: Believing that high-temperature steam can primarily dissolve oil stains in practice.
Technical facts:
The outlet temperature of steam mop is usually between 100-120 ℃, directly acting on the floor surface. The thermal deformation temperature of polypropylene is about 110-120 ℃ (unreinforced type). High temperature steam can cause local softening of the surface, resulting in two problems: first, the frosted texture is flattened (under the pressure of the mop), and second, residual stress release causes local warping.
High temperature can also accelerate the migration of additives, forming white mist like precipitates on the surface.
Actual case: After using a steam mop to clean suspended floors in a kindergarten for 3 months, the surface of the frequently mopped area became as smooth as a mirror, and multiple children slipped and fell in that area.
The correct approach:
Clean with clean water at room temperature. If it is necessary to focus on the actual situation, use diluted 84 as the main solution (with a good chlorine concentration of 250mg/L, i.e. 1:200 dilution), and after 10 minutes of washing, rinse again with clean water to remove residual chlorine.
Attention: 84 should not be used frequently (no more than once a month) as the main solution to avoid oxidizing additives.
Misconception 7: Neglecting the cleanliness of the floor bottom
Misconception: Believing that a clean floor surface is sufficient, and not caring if the bottom is not visible.
Technical facts:
There is a 5-8mm gap between the bottom of the suspended floor and the foundation ground. This gap will accumulate: leaf fragments, soil, insect corpses, and material spores. If not cleaned for a long time, these organic substances (based on actual reports) will decompose and produce acidic substances (such as humic acid), corrode the surface of the foundation ground, and produce powder.
When the floor is stepped on, the powder at the bottom will be "pumped" to the surface, forming difficult to remove gray stains.
The blocked bottom gap can also hinder air circulation, leading to long-term moisture under the floor, accelerating foundation aging and mold growth.
The correct approach:
At least once a year, carry out board cleaning: select a corner of the site, remove about 10-20 floors, and use high-pressure air (pressure ≤ 0.5MPa) to blow around from the removal site, blowing out the bottom dust from the carved space. Cooperate with a vacuum cleaner to collect flying dust.
It is recommended to clean outdoor areas once in spring (before the rainy season) and once in autumn (after falling leaves).
After cleaning, check if there is any standing water or mold on the foundation floor, and deal with it if necessary.
Misconception 8: Using acidic rust remover to clean metal pollution
Misconception: Believing that rust or metal scratches on the floor can be removed with oxalic acid or toilet cleaner.
Technical facts:
Acidic rust removers such as oxalic acid, hydrochloric acid, and phosphoric acid can have two adverse reactions with polypropylene: one is that the acid solution infiltrates the lock buckle, corroding the residual metal mold inside (if any), resulting in salt crystallization and cracking of the lock buckle; The second is that the acid solution damages the calcium carbonate filler in the floor, resulting in the appearance of pitting on the surface.
Even more dangerous is that acidic residues can react with the materials of sports shoe soles, accelerating the aging of the rubber on the soles.
The correct approach:
Metal scratches (such as rust marks caused by the movement of a basketball hoop): Use a plastic scraper (not metal) to gently scrape off surface protrusions, then use a soft cloth dipped in citric acid solution (10% concentration, pH about 2.5, mild) to locally wipe, and immediately rinse with plenty of water.
Serious pollution: Replace the floor directly (the modular advantage of suspended flooring). The cost of a board is usually lower than the risk of failure in cleaning attempts.
Misconception 9: Exposure to sunlight and drying to accelerate water evaporation
Misconception: Believing that exposing the floor to sunlight after cleaning can dry it quickly and prevent mold.
Technical facts:
Polypropylene itself is not afraid of sun exposure (with the addition of anti UV agents), but the residual moisture on the cleaned floor surface can form a convex lens effect - water droplets act like miniature magnifying glasses that focus sunlight, and local temperatures can reach over 100 ℃, forming burn spots on the surface.
The degradation of materials at these spots accelerates, and microcracks and pulverization will appear after several months. In outdoor areas, this "water spot aging" has 3-5 times more destructive power than uniform sun exposure.
Suitable drying speed can also cause uneven stress release inside the floor, leading to slight warping.
The correct approach:
After cleaning, use a soft mop or rubber scraper to push away any accumulated water on the surface, rather than exposing it to direct sunlight.
Natural shade drying is sufficient. The ventilation of the suspended structure itself allows water to naturally evaporate within 1-2 hours (summer) or 4-6 hours (winter).
Cannot be dried with a hot air blower (high temperature airflow can also generate local stress).
Misconception 10: Use kerosene or diesel to wipe away oil stains
Misconception: Believing that oil solvents can "dissolve oil in oil" and remove oil and edible oil stains at an appropriate speed.
Technical facts:
Kerosene and diesel are poor solvents for polypropylene, but long-term contact (more than 10 minutes) can still cause its surface to swell. After swelling, the surface becomes soft and sticky, making it easier to adsorb dust and form a stubborn oil ash mixture.
More seriously, kerosene will seep into the interior of the lock, causing the lock material to soften and reducing the pulling force by more than 50%. And this kind of damage is irreversible - the material will not return to its original state after the solvent evaporates.
The correct approach:
Edible oil stains: First, use a tissue to remove excess oil, then wipe with a neutral cleaning solution (pH 7), and finally rinse with water.
Engine oil/lubricant: Use a one-to-one PP surface degreaser (mostly composed of alcohol mixtures such as isopropanol), dip it in a soft cloth, wipe it locally, and immediately rinse with water.
Emergency alternative: Medical grade alcohol (75% concentration) can be used in small amounts, but must be wiped off within 30 seconds and washed with clean water.
