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High-Performance Windows at a Fraction of the Cost

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Reducing business energy use by 10 to 20 percent, low-emissivity (low-e) storm window attachments are a cost-effective, high-performance alternative to full window replacement for small commercial buildings. Low-e storm window attachments simply attach to the interior or exterior of a window for quick installation with minimal tenant disruption. At about one-third the cost of window replacement, this durable and consistent product comes with extended manufacturer guarantees.

How it works

When attached to an existing window, low-e storm window attachments significantly reduce air leakage by creating an airtight seal and an insulating pocket of air between the windows. The low-e coating applied to the added pane of glass reduces heating and cooling costs by reflecting unwanted exterior solar heat gain and interior heat loss. This results in fewer drafts, reduced outside noise and glare, reduced HVAC load and significant energy savings.

Easy Installation

Installing low-e storm windows is one of the most cost-effective and simple solutions for improving the performance of older, inefficient existing windows. The average storm window attachment takes 10 to 20 minutes to install, with just a handful of basic materials: your low-e window, tape measure, screwdriver, putty knife, caulk and a caulking gun. 

The low-e storm window frame has interlocking, overlapping joints that can be installed on the interior or exterior of your current window’s frame. The frame features a built-in window sill expander that allows the frame to fit snuggly into a wide variety of window types and sizes. 

Low-e storm windows are customizable to a building’s existing aesthetic and, with options for operable or fixed windows, adaptable to the existing window function. This operational flexibility reduces maintenance needs, as they don’t need to be removed like traditional, clear-glass storm windows.

Get started today

Low-e storm window attachments can be custom-ordered directly from your preferred manufacturer (listed below). They are also available in standard sizes at most large home improvement stores.

  • Larson Manufacturing Company
  • Quanta Panel
  • Inner Glass Window Systems
  • ProVia
  • Harvey Building Products
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