Ply Gem Industries

• ▸Country: USA
• ▸Corporate name: Cornerstone Building Brands (formerly Ply Gem)
• ▸Founded: 1943
• ▸Window brands in group: Simonton, Great Lakes Window, Atrium Windows
• ▸Other products: Vinyl siding, roofing, gutters, trim
• ▸Scale: One of the largest exterior building products groups in North America
• ▸Climate context: USA national - brands cover all US climate zones

• ▸Simonton Windows
• ▸Great Lakes Window
• ▸Atrium Windows
• ▸Exterior building products

The group model means a professional who understands one Ply Gem vinyl window brand largely understands the others. Common manufacturing standards and shared engineering result in consistent cleaning requirements across Simonton, Great Lakes, and Atrium. Ply Gem exterior products - siding, trim, gutters - appear on properties alongside Ply Gem windows. Be aware of chemistry compatibility when cleaning both windows and exterior products on the same visit. At the group level, Ply Gem represents the volume mid-market of US vinyl window manufacturing. These brands collectively cover a very large proportion of USA new construction and replacement residential windows.

This is how I clean Ply Gem Industries windows. The tools and technique below come from 25 years of daily professional work on the glass. Every step has been tested on real installations and adapted specifically for Ply Gem Industries systems.

• ✕Do not use solvent, abrasive, or alkaline products on any Ply Gem group vinyl window
• ✕Do not allow siding or exterior cleaning chemicals to migrate onto window frames
• ✕Do not exceed 3% bleach concentration for mildew treatment
• ✕Do not neglect weep hole maintenance across any brand in the group

Bundle Kit

Pro KitThe full professional setup. Brass squeegees, T-bar with applicator cover, tool belt, rags, soap, and bucket. Everything from the daily tool list in one box.Shop now →

Tool Recommendations