Some common sources of moisture damage to wood floor structure include:
• Leaks or flooding.
Exposure to excess water that seeps or floods into the wood floors or below them can severely damage the structure. Sources include plumbing leaks, roof leaks, foundation leaks, flooding, etc. Moisture causes wood to rot, warp, and lose strength.
• High humidity.
Excessively high indoor humidity levels can lead to moisture damage over time. Long-term exposure to humidity over 70% RH leads to wood swelling, warping, and rot. Lack of ventilation, improper heating/cooling, and leaks can contribute to high humidity that damages wood floors.
• Standing water.
Any standing water contact with wood allows maximum moisture absorption which leads rapidly to rot, decay and structural damage. Water should never be allowed to stand against wood floors or subfloors for any length of time.
• Groundwater/Seepage.
If the groundwater table rises or water seeps up through foundations and along walls, it can saturate wood floor structure over time. Basement and crawlspace wood floors are especially prone to such groundwater issues. Flooding and waterproofing foundations/walls help prevent this problem.
• Spills/Splashes.
Spills, splashes, mopping and improper cleaning techniques can drive moisture into small cracks and crevices in wood floors or around joints and edges over time. Encasing edges, minimizing standing water and drying quickly are best practices.
• Snow/Ice.
During winter months, snow and ice melting on wood floors or in basements/garages leads to saturation. Routines should ensure all snow/ice is removed from around structures as quickly as possible to avoid this type of moisture damage.
• Humidity Fluctuations.
Rapid cycling between high- and low-humidity conditions can cause wood to expand and contract repeatedly, which leads to stress and damage. High-performance HVAC systems help provide humidity control and prevent damage from fluctuations.
• Lack of Air Circulation.
Inadequate air circulation limits how quickly moisture is able to escape from wood floors and their environment. Use fans, dehumidifiers, open doors/windows, etc. to improve circulation and speed moisture dissipation when needed. Stagnant, still air leads to higher humidity around wood.
Preventing excess moisture exposure and maintaining limited, controlled humidity conditions are the best ways to avoid damage to wood floor structures over time. Be on alert for any potential moisture issues and address them promptly to minimize harm.
