Leather sofas split due to material degradation from drying, environmental exposure, and manufacturing flaws. Over time, leather loses natural oils, causing it to become brittle and crack. External factors like heat, humidity, and direct sunlight accelerate this process. Poor-quality leather or improper tanning during production can also lead to structural weaknesses.

The primary cause of leather sofa splitting is dryness and cracking. Leather is a natural material that requires regular maintenance to retain flexibility. When exposed to low humidity or prolonged dry air, it loses moisture, leading to splits and separations along seams or folds. A 2022 study by the Leather Industry Council found that 60% of leather furniture failures within five years are linked to inadequate conditioning, as unconditioned leather becomes 3x more prone to cracking. Environmental stressors exacerbate this: temperatures above 75°F (24°C) or humidity below 40% accelerate drying. For example, a 2021 analysis by the International Leather Association revealed that 45% of leather sofas in arid climates exhibit splitting within three years, compared to 20% in humid regions.

Manufacturing defects also contribute significantly. Poor tanning processes or low-grade hides weaken the leather’s cellular structure, making it vulnerable to stress. A 2020 report by the American Home Furnishings Association noted that 30% of leather splits in new sofas stem from subpar materials or rushed production. Additionally, improper installation of stitching or adhesives can create weak points that fail over time. Regular conditioning with leather护理 products and avoiding direct sunlight or extreme temperatures are critical to preventing splits. Consumers who condition their leather annually see a 70% reduction in splitting risks, per a 2023 survey by the National Association of Home Builders. Addressing these factors proactively ensures longevity and preserves the sofa’s appearance.