- Glass is porous. A cross-section of a sheet of glass reveals peaks and valleys.
- Glass is a liquid that continues to harden over time.
- Because glass is porous, it’s easy to understand how it’s transparent look can quickly become obstructed with airborne pollutants.
It’s also understandable how hard water (rain water that runs over a prefabricated surface, i.e. wood stained plank, painted siding, concrete sealant and deposits minerals and acids from those substances into the pores of the glass) can damage glazing if not maintained on a regular basis.