Why Do My Kitchen Cabinets Turn Black?

Heat and Burns

• Untreated wooden cabinets are more likely to discolor when exposed to hot kitchen appliances, such as open-faced toasters. Examine the black spot to determine what electrical appliance could have caused the black spot. For example, an open-faced toaster placed close to a cabinet wall may turn the untreated cabinet wood black during use, as it expels hot air directly up in the air. Cabinet bottom panels located closely above an open-faced toaster may also be subject to blackening or discoloring. This type of discoloration is easily treated, as it can be sanded down and repainted.

Mold and Decay

• The color black on a wooden surface may be a sign of wood decay. Wood starts decaying, deteriorating and turning black after suffering from untreated mold and mildew. The mold may also appear in brown or dark green shades before turning completely black. Decay is difficult to treat, as the wood starts to crumble and weaken. The only option for advanced decay is to replace the affected cabinet panels.

Planning Ahead

• Avoid blackened cabinets by providing enough space when using open-faced burners and toasters. If possible, there should be no panels, cabinets or obstacles above the open-faced burners at any time during operation. In addition, cabinets are protected from water and moisture when sealed with laminate. Ensure that all cabinets have proper ventilation, specifically in moist environments or humid weather.

Mold Prevention

• Decay stems from untreated mold, meaning you must treat mold during the early stages to prevent black decay. Ensure that your wooden cabinets are dry and avoid exposing them to heavy moisture or water. When you install the cabinets in your kitchen, treat them with mold prevention preservatives to fight any potential mold bacteria that may arise during moist conditions.