Abstract: A method of constructing shower enclosure support structures which decreases the probability of mold growth by utilizing interior and/or exterior corner directional flow flashings between the joints of the sheets of synthetic marble, tile or other porous or non-porous material which cover the interior of the shower enclosure support structure and the material comprising the vertical walls of the shower enclosure support structure, a shower pan floor sloped downwardly toward the shower drain, a shower floor supported above the shower pan floor by spacers or mortar piers creating a void for air circulation between the shower floor and the shower pan floor, spacing between the shower floor periphery and the vertical walls of the shower pan to provide additional air circulation between the shower floor and the shower pan floor, shower enclosure support structure horizontal framing members that are sloped toward the shower drain, shower enclosure support structure horizontal framing members that are covered by the