Simonton Windows & Doors

• ▸Country: USA
• ▸Founded: 1946
• ▸Material: All-vinyl manufacturer - no wood, aluminium, or fibreglass frames
• ▸Product lines: 12 lines from Prism (entry) to Reflections and ProFinish (premium)
• ▸Parent company: Ply Gem / Cornerstone Building Brands
• ▸Related brands: Great Lakes Window, Atrium Windows (same parent)
• ▸Climate context: USA national - strong Southeast and Mid-Atlantic presence

• ▸Prism Series
• ▸Reflections 5500
• ▸ProFinish Brickmould
• ▸StormBreaker Plus

Simonton is an all-vinyl manufacturer. Every product family - entry to premium - uses uPVC vinyl frames. The cleaning approach is consistent across the entire range: pH-neutral, solvent-free, no abrasives. The StormBreaker Plus impact-resistant line uses laminated glass in a heavier vinyl frame. Laminated glass has edge seal sensitivity - inspect seals at every clean and do not allow water to pool at the glass base. Simonton products appear heavily in the Southeast US - a climate zone that combines high UV, high humidity, and significant mildew and algae loading on window surfaces. Cleaning intervals in the Southeast need to reflect this.

This is how I clean Simonton Windows & Doors 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 Simonton Windows & Doors systems.

• ✕Do not use solvent, alkaline, or abrasive cleaning products on vinyl frames
• ✕Do not use bleach concentrations above 3% for mildew treatment
• ✕Do not allow water to pool at the glass base on StormBreaker Plus impact glass
• ✕Do not force tilt-wash mechanisms on double-hung windows
• ✕Do not leave cleaning solution residue on vinyl in direct Southeast sun - it bakes onto the surface

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