Office Chair Damages Floor

The main reasons for office chairs damaging floors are wheel material conflicts, concentrated pressure, and amplified damage from impurities. Here is a detailed analysis:

I. Causes of Damage

1. Wheel Material Conflicts: The universal wheels of ordinary office chairs are mostly made of hard PVC or nylon, which have high hardness, while the paint film on the surface of wooden floors has relatively low hardness. When hard plastic wheels (such as PP/PU hard wheels) roll on hard surfaces for a long time, the tiny sand particles or dust trapped on their surfaces will scratch the paint like sandpaper, with scratches being more noticeable on light-colored floors.
2. Concentrated Pressure: When a person weighing 68 kg uses five small-diameter (50 mm) hard wheels, the pressure borne by a single wheel is approximately 2.5 MPa, exceeding the compressive limit of most composite floors (1.8 MPa), resulting in dents or impressions on the floor surface.
3. Amplified Damage from Impurities: The sand and gravel trapped by the wheels act as 'abrasives'. Wheels containing quartz sand can accelerate floor wear by 400%. Especially in dry environments, the friction between impurities and the wheels exacerbates floor damage.

II. Preventive Measures

1. Choose Special Floor Protection Pads: Prioritize PVC mats with a high-density cushioning layer at the bottom and a non-slip texture on the surface, such as thickened PVC bases paired with micro-textured frosted mats, which can effectively disperse pressure and prevent slipping.
2. Replace with Soft Rollers: Replace hard plastic or metal wheels with soft rollers made of high-elastic PU or TPR materials, which are wear-resistant, smooth, and do not damage the floor. When purchasing, ensure interface compatibility to avoid installation failures due to size mismatches.
3. Install Chair Leg Protectors: Use transparent thickened silicone or rubber protectors. Silicone materials are moderately soft and hard with good resilience, while the beveled elastic opening design of rubber foot pads ensures a firm fit, preventing direct contact between the chair legs and the floor.
4. Regular Maintenance and Cleaning: Use a vacuum cleaner weekly to clean dust and sand from the wheel grooves, and lubricate the wheel axles with WD-40 monthly to reduce friction, avoiding sudden turns and stops and other violent movements.

III. Repair Methods

1. Wooden Floor Dent Repair: Clean the dent area with a damp cloth and keep it moist. Lay a clean damp towel over it and heat it with an electric iron. Use high-temperature steam to make the wood fibers expand and restore their original shape. Control the temperature and time during operation to avoid paint damage.
2. Tile Scratch Repair: The reference information does not provide a complete repair plan. It is recommended to choose a professional tile repair agent according to the depth of the scratches or contact after-sales service for handling.