High levels of tannic acid present in woods like oak walnut and mahogany can produce a dark discoloration when coming in contact with some products used in the finishing and maintenance of wood floors.
Hardwood floor discoloration from water.
Most problems with wood floors are caused by too much moisture.
In general most solid wood flooring will contract during periods of low humidity leaving cracks between boards and expand during periods of high humidity.
When water sits on top of hardwood floors it can permanently ruin the hardwood as the wood will absorb the water through its pores causing warping and discoloration.
Certain species of wood floor are more prone to fading and discoloration than others.
Tannic acid is water soluble and may discolor when it comes in contact with iron and water which usually appears as a bluish gray.
Wood floor problems caused by excessive moisture.
They are usually the result of standing water and are most likely to occur when the finish has worn thin.
When rh falls wood loses moisture to the air.
Rugs block uv light which causes uneven fading.
Uneven discoloration of wood flooring is sometimes caused by a rug.
Puddles of water on your hardwood can cause swelling and discoloration so it is recommended to use a light mist of cleaner that is specifically made for wood floors.
So if you have a flood or water damage or even just a spill on your hardwood flooring you ll want to remove the water and dry your floors as quickly as possible.
These are some of the most common causes.
Water on or under the floor.
The most troublesome hardwood floor stains are those that affect the wood itself.