Why Water Doesn’t Drain the Way You Think It Does | BEM

Why Water Doesn’t Drain the Way You Think It Does | BEM

Why Water Doesn’t Drain the Way You Think It Does | BEMFrank
Published on: 08/11/2026

Commercial low-slope roofs drift over time. Learn why standing water happens, how deck deflection and insulation compression alter drainage, and how to read the roof.

roof deck deflectionlow-slope roof drainagecommercial roof ponding