Black Spots On Engineered Hardwood

For more on black spots see my previous article what causes mysterious black spots in wood floors.

Black spots on engineered hardwood. However items such as oil water grease and pet urine will create black spots on the hardwood floors. I considered black iron oxide contamination but such spots encapsulate once the finish is dry and do not spread. The homeowner was convinced the flooring was defective and wanted the floor replaced. Dark spots on hardwood flooring are commonly the result of some type of liquid that has soaked into the polyurethane finish and top layers of wood.

Last january i was commissioned by a flooring manufacturer to inspect a prefinished 3 inch engineered oak floor that had developed dark spots. Black spots on wood can also appear due to prolonged exposure of water and metal nails forming the iron oxide. It reacts with the tannin in the wood and turns black. With the proper care hardwood floors will last a lifetime.

These discolorations will cause your hardwood floors to look old and dingy. The use of the best hardwood steam mops is recommended for sealed floors. Black rings or dark water marks can be more problematic as these are generally water stains that have penetrated into the finish of the floor. Over several weeks and even months the mysterious crud spread onto adjoining floors and materials.

The gulf coast area home was late 1970s construction with a concrete slab. Ceramic tile sheet.