If tatami facing does a change of color (sunburn) in sunlight and wears out, let's reverse a tatami mat.
(There is tatami facing on both sides)
You may depend on tatami-maker, and it is not that even one can not do it.
It’s a good idea to change tatami hem at the same time.
An aim to reverse a tatami mat depends on the use situation, but every two or three years are common.
When it is stained when you reverse the tatami, or if you’ve already reversed it in the past, you have to renew tatami facing. (Omote gae)
When a stain/crut is too terrible, tatami mat in itself becomes unstable, and a hindrance is given even if you reverse it.
Let’s think well for a timing of flip.