Essential Knowledge: Top 5 Hidden Risks in Renovation
Risk 1: Wall Decoration Erosion
Many homeowners have encountered issues like water stains on ceilings or damp corners. Wall paint peels off in large chunks, ceiling plaster crumbles, and wallpaper discolors or tears due to moisture absorption.
These problems are mostly caused by poor-quality waterproofing materials. We recommend choosing rigid waterproof coatings for optimal protection.
Risk 2: Furniture Mold & Electrical Rust
Some customers complain that their custom solid wood furniture—costing tens of thousands of yuan—starts molding within months. After a two-month absence, refrigerators and other appliances may suffer severe rust damage.
Again, inadequate waterproofing is the main culprit. Leaks and dampness coming into direct contact with furniture and electronics drastically shorten their lifespan.
Risk 3: Floor Damage & Corner Mold
Wooden floors damaged by moisture are common, especially in southern regions. Mold often grows in corners, and even multiple coats of wall paint fail to prevent recurrence after rainy seasons.
Superficial fixes with ordinary paints won’t solve the root cause. Many so-called waterproof coatings on the market only treat symptoms; professional-grade waterproofing materials are required for permanent solutions.
Risk 4: Kitchen/Bathroom Leaks Affecting Neighbors
Reliable statistics show that water leakage is the top trigger for neighborhood disputes.
Poor waterproofing leads to the most serious and obvious consequence: leakage. Building seepage not only inconveniences neighbors but also accelerates structural deterioration, turning the property into a potential safety hazard.
Waterproofing involves multiple stages—material selection, design, construction, and maintenance—requiring full attention from homeowners.
Risk 5: Unsafe Waterproofing Materials Endangering Health
In August 2016, a tragic poisoning incident occurred at a hotel renovation site in Beijing, resulting in 1 death and 2 injuries. The cause was toxic fumes emitted by waterproof coatings and thinners used during on-site construction.
Highly polluting waterproof materials include tar-containing polyurethane products, typically made from coal tar or coal tar-derived raw materials.
Volatile coal tar fumes have a pungent odor. Due to their high molecular weight, these fumes easily accumulate in poorly ventilated indoor environments. Inhalation of large amounts in a short period can cause acute poisoning and death.
Another flaw of such materials is the use of organic solvents (e.g., toluene, xylene) as thinners, which are toxic substances.
Long-term low-dose inhalation of coal tar fumes and benzene can cause respiratory illnesses, dizziness, nausea, and even cancer.
Therefore, waterproofing materials must be safe and eco-friendly to protect the health of construction workers and homeowners.
Waterproofing is a critical part of renovation. We update professional waterproofing knowledge daily. Follow us for more essential tips!