Andersen Windows

• ▸Country: USA
• ▸Founded: 1903 by Hans Andersen
• ▸Headquarters: Bayport, Minnesota
• ▸Scale: Largest window and door manufacturer in North America
• ▸Signature material: Fibrex composite - wood fibre and recycled PVC
• ▸Product families: 100 Series (vinyl), 200 Series, 400 Series (wood/Fibrex), E-Series (aluminium/wood), Renewal by Andersen
• ▸Climate context: USA national - products specified for all US climate zones from Minnesota winters to Gulf Coast humidity

• ▸100 Series
• ▸200 Series
• ▸400 Series
• ▸E-Series
• ▸Renewal by Andersen

Fibrex composite is the defining Andersen material. It is harder than standard uPVC, more resistant to staining, and will not rot or require repainting - but it is not impervious to harsh chemical cleaners. The composite surface can be dulled by solvent-based products, even ones that do not visibly damage uPVC. Use pH-neutral, solvent-free cleaning products on all Fibrex surfaces. The 400 Series wood interior means the inside face of the frame is painted or stained wood. Any water that runs onto the interior frame surface during cleaning needs to be wiped dry immediately. Wood interiors do not tolerate repeated moisture exposure the way vinyl and composite exteriors do. E-Series aluminium-clad windows have a different maintenance requirement from Fibrex products. The aluminium cladding can be powder-coated or anodised - confirm before using any frame cleaning product. Andersen operates at every price point from entry vinyl to custom aluminium-clad wood. Identify which product family you are working on before selecting your approach.

This is how I clean Andersen Windows 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 Andersen Windows systems.

• ✕Do not use solvent-based, citrus oil, or alkaline cleaning products on Fibrex composite frames
• ✕Do not use abrasive pads or steel wool on any Andersen surface - composite, vinyl, aluminium, or glass
• ✕Do not allow water to pool on wood interior surfaces of 400 Series windows
• ✕Do not use alkaline cleaners on E-Series anodised aluminium cladding
• ✕Do not apply cleaning solution directly to hardware mechanisms
• ✕Do not confuse 100 Series vinyl frames with Fibrex composite - they look similar but vinyl can tolerate slightly more aggressive cleaning

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