Black Spots On Engineered Hardwood

I considered black iron oxide contamination but such spots encapsulate once the finish is dry and do not spread.

Black spots on engineered hardwood.

Last january i was commissioned by a flooring manufacturer to inspect a prefinished 3 inch engineered oak floor that had developed dark spots. 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. Dip a small brush such as a toothbrush into a small amount of bleach and rub onto the stain. The homeowner was convinced the flooring was defective and wanted the floor replaced.

The gulf coast area home was late 1970s construction with a concrete slab. It reacts with the tannin in the wood and turns black. Ceramic tile sheet. With the proper care hardwood floors will last a lifetime.

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. Over several weeks and even months the mysterious crud spread onto adjoining floors and materials. Unlike white water stains residing on the very surface of the hardwood floor dark stains require more steps and products in order to restore the beauty of the wood. These discolorations will cause your hardwood floors to look old and dingy.

Black spots on wood can also appear due to prolonged exposure of water and metal nails forming the iron oxide. To remove dark water stains from wood floors you have two options.