1986
Weathermaster Products Corporation begins operation in Baltimore, Maryland with its mission to provide high quality exterior remodeling products at unheard of wholesale prices

1987
Weathermaster's service area extended to Howard, Carroll, Anne Arundel, Montgomery, Prince George's, Frederick, and Harford Counties

1988
Weathermaster installs its 5,000th window

1989
Weathermaster Products Corporation is renamed WeatherMaster Custom Windows, recasting its mission to focus on windows

1990
WeatherMaster opens a showroom/outlet in Baltimore, Maryland

1992
WeatherMaster's service area is extended to include Washington, DC and Queen Anne's County

1994
WeatherMaster installs its 25,000th window

1998
WeatherMaster signs ENERGY STAR partnership agreement with the US Department of Energy & EPA

2001
WeatherMaster installs its 75,000th window

2002
WeatherMaster opens its new 10,000 SF warehouse/showroom in the Fells Point section of Baltimore

2006
WeatherMaster celebrates its 20th Anniversary

2007
WeatherMaster's service area is extended to Northern Calvert County