335. Exception for fair wear and tear.

The effect of an exception of damage or dilapidations resulting from fair wear and tear from a covenant to keep in good repair and condition depends upon the particular words of the covenant to be construed1. If there is proof that the premises are not in good repair and condition, the onus is on the tenant to prove that the matters complained of result from the fair wear and tear excepted2. If fair or reasonable wear and tear are excepted, the tenant is not bound to make good dilapidations caused by the friction of the air and by exposure