Wood is a natural product subject to variations from region to region and the season in which it is cut.
Wood is also sensitive to heat and UV light, which over time may change the color of the sample being viewed and subsequently the floor that has been installed.
Changes in color and deepening of wood grain are a natural occurrence.
These changes are normal, commonly referred to as patina and not considered a defect.
Wood is also hygroscopic (it has the ability to attract and hold water) and is subject to changes such as gapping or possible surface distortion and deterioration in a hostile environment.
Careful control of temperature and humidity can help maintain optimal preservation of the floor.
Many factors influence weathering. Prolong exposure to sunlight will slightly discolor the floor.
Water, moisture, mechanical forces and heat will alter the appearance and texture of wood.