However items such as oil water grease and pet urine will create black spots on the hardwood floors.
Black spots on engineered hardwood.
These discolorations will cause your hardwood floors to look old and dingy.
Last january i was commissioned by a flooring manufacturer to inspect a prefinished 3 inch engineered oak floor that had developed dark spots.
It reacts with the tannin in the wood and turns black.
Ceramic tile sheet.
Dip a small brush such as a toothbrush into a small amount of bleach and rub onto the stain.
The use of the best hardwood steam mops is recommended for sealed floors.
I considered black iron oxide contamination but such spots encapsulate once the finish is dry and do not spread.
Over several weeks and even months the mysterious crud spread onto adjoining floors and materials.
For more on black spots see my previous article what causes mysterious black spots in wood floors.
With the proper care hardwood floors will last a lifetime.
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.
The gulf coast area home was late 1970s construction with a concrete slab.
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.