Residential

Your windows are one of the most expensive investments you have ventured in your house and they deserve proper cleaning, washing and maintenance. Window glass is porous; its surface is filled with peaks and valleys. These valleys easily capture and trap airborne debris that will diminish glass’ integrity. To protect your investment DeMark’s recommends  interior and exterior window cleanings twice per year and additional exterior window cleanings as needed.

Clean glass improves the R-Value of thermal pane windows which is the measure of resistance to heat gain or loss.

Regardless of your glass type, a clean window allows the glass to better regulate the effects of exterior weather, which can produce greater efficiency and reduce your monthly heating and cooling cost.