Let’s start with the GLASS...
We use Cardinal® IG Glass Units in our windows. The figures below show this unit provides superior insulating value for your money. Unlike other window manufacturers, we leave the glass to the experts.

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Figures courtesy of Cardinal® IG. The lower the U-Factor, the greater the insulation value. Our windows have the lowest.

Why does this matter?
At Parco, we are sincerely concerned about your satisfaction. Our selection of only the best materials in our windows, combined with assembly by some of the most experienced people in the vinyl window industry, has yielded some of the best results ever. We prove it through independent testing at Architectural Testing, Inc. in New Brighton, MN.

Thermal Test Results
Parco Windows exceeded the minimum requirements of the Energy Star® Program by over 20%!

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Air Infiltration Test Results
Parco Windows came in under the maximum allowable air infiltration requirements of the American Architectural Manufacturer's Association by over 50%.

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What does this mean to You?
Better insulating factors mean a warmer window in your home when the cold winters of the north come around. Old Man Winter doesn’t stand a chance with our glass. Lower air infiltration rate means less drafts into your home.

When it's 0º outside, the glass types below will result in an inside temperature of:

  • Pargon soft coat Low-E glass with argon gas = 60.3º
  • Double-pane clear glass = 51º
  • Single-pane clear glass = 29º
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Vinyl for Maintenance Freedom
All of our windows are constructed with rugged, maintenance-free uPVC (polyvinyl chloride). Unlike wood or metal windows that can stick when they swell or deteriorate from corrosion, pitting or rot, vinyl windows never will. Wash them with soap and water and they’ll look great year-after-year.

Because vinyl’s base color is solid throughout, you’ll never need to paint or stain these windows. The same properties that ensure vinyl’s maintenance freedom also allow window designs that are easy to operate and clean.

Built Tight to Keep Air Out
Air infiltration is a major cause of energy loss. Our sashes are double weatherstripped and double-hung and sliding windows feature full meeting rail interlocks. This method of construction creates a solid barrier to air and water. Parco casement windows are lined with two seals of specially designed weatherstripping which provides one of the lowest air infiltration rates in the industry. The low air infiltration rate means windows prevent drafts and keep you comfortable.

Tests prove that our windows save energy dollars. In independent air infiltration studies by Architectural Testing, Inc., our windows rate significantly better than the industry standard and much better than major wood window brands.

Our Glass System—A Major Advantage
All insulated glass will save energy. Parco’s system has the edge, however. This technologically advanced insulated glass spacer system utilizes a unique, U-shaped channel to separate glass panes and interrupt the natural flow of heat to cold and is standard on most products. It also reduces the chill that can occur around the glass perimeter which may cause condensation and puddling.

While most spacer systems use four separate pieces of aluminum joined together by corner keys, our warm-edge design is a continuous piece. The result is a stronger, more energy-efficient insulated glass unit. In addition, the warm-edge spacer’s unique ability to flex with glass expansion and contraction ensures a strong seal for the life of the window.

Pargon Glass for Higher Thermal Performance
For maximum energy efficiency specify optional Pargon multilayer vacuum-deposition soft-coat lowE2 glass filled with argon gas which gives the center of glass R-value of 4.35 and offers protection from the sun’s damaging ultraviolet rays. LowE2 glass is up to 40% more energy efficient than other types of lowE glass—and up to 50% better than ordinary insulated glass. And since Pargon also blocks more of the sun’s harmful ultraviolet rays, it will help protect furniture, carpet and drapes from fading while letting plants thrive.

We don't want you to just take our word for it - check out our Links page to learn more about windows.

Pargon Glass Technology

  • High performance LowE2 argon-filled (dual seal) insulated glass, provides the highest energy efficiency; saving dollars on your energy costs.
  • Proven dual seal technology protects Argon fill for the life of the window.
  • Minimizes condensation.
  • Reduces sound transmission making your home quieter.
  • Warm edge spacer provides strength and durability while allowing expansion and contraction for seal protection.
  • Minimizes effects of the sun’s harmful UV rays to protect furniture, drapes and carpet while letting plants thrive.