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Sheffield Fusion-Welded Vinyl Windows

Ultra-Premium, Custom-Made Windows

The superior performance of Sheffield Windows starts with innovation. Every precision-engineered component contributes to superior energy savings. The multi-chamber design helps trap dead air to produce an effective barrier, while the extra-thick, fusion-welded frame and sashes provide superior structural strength and create a permanent barrier against air and moisture infiltration, adding up to greater energy savings and lower utility bills.

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Vinyl Color Choices

Customize your home by selecting a vinyl color that complements its style and look. Optional decorative interior and exterior paint finishes create the perfect curb appeal.

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Color Selected:

*Extruded Solid Color

Exterior Colors

Interior Colors

Our Limited Lifetime Warranty

Your investment in Alside windows, siding and accessories is backed by lifetime limited transferable warranties. This peace-of-mind warranty coverage is added assurance that you have not only invested in windows and siding from a leading innovator in vinyl building products, but with proper care, your purchase is guaranteed to perform for the lifetime of the product.

For more information download the Sheffield Brochure and Warrranty

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Features and Benefits

  • The multi-chamber design of the Sheffield Window helps trap dead air to produce an effective insulating barrier.

  • Fusion-welded frame and sashes provide superior structural strength and create a permanent barrier against air and moisture infiltration.

  • Ensuring easy operation, the constant force balance system and heavy-duty operating hardware continue to operate perfectly, even after decades of regular use.

  • Heavy-duty SteelForce reinforcement is placed within the sashes at the meeting rails to ensure extra protection at this very critical and often used location.

  • The Intercept Spacer System helps reduce conducted heat loss through the window and is better at retaining insulating gas than many conventional designs.

  • Triple-barrier weatherstripping between the sash and jamb for superior protection from air and water infiltration.

  • Sloped sill helps prevent water and air infiltration, forcing water to drain to the exterior of the window.

Sheffield Fusion-Welded Vinyl Windows can be fitted with ClimaTech Insulated Glass packages, featuring Low-E glass, argon gas and the Intercept Warm-Edge Spacer System. The superior thermal performance of this insulating glass unit can help lower your energy costs while further reducing the consumption of fossil fuels. Many ClimaTech insulating glass packages meet the latest ENERGY STAR requirements.

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Available Options for Sheffield Fusion Windows

Sheffield windows are available in 5 stunning window styles. All backed by our industry leading Limited Lifetime Warranty. Every window is custom made for your specific order by professionals who are invested in your satisfaction.

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Double Hung

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Bay and Bow

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1. ClimaTech Insulated Glass

The optional ClimaTech insulated glass package combines multi-layered low-emissivity (Low-E) glass and argon gas. In the winter, it lets in solar heat and holds the warm air inside. In summer, it repels heat and glare while filtering out ultraviolet rays, which can fade carpet, furniture, artwork and painted or stained wood.

2. Intercept Warm-Edge Spacer System

The Intercept Spacer System features a unique, one-piece metal alloy, U-channel design that creates an effective thermal barrier to help reduce conducted heat loss through the window. Its sealed, one-piece design makes Intercept spacers stronger and better at retaining insulating gas than many conventional designs. Intercept spacers are so energy efficient that they keep the edges of the window glass warmer so your home feels more comfortable in the winter.

ThermD Stainless Steel Intercept Warm-Edge Spacer

ClimaTech ThermD features insulating Low-E glass, argon gas and a stainless steel Intercept Warm-Edge Spacer for even greater thermal efficiency with the unique Intercept design. Through its stainless steel alloy, ThermD advances performance to the highest level. Stainless steel known for its unsurpassed strength, durability and resistance to corrosion is also impervious to gas transmission, which improves insulating gas retention in the window unit and increases its overall thermal performance. The stainless steel spacer also incorporates flex, for low stress on the sealant bond to offset effects of temperature changes and helps to prevent seal failure. ThermD Stainless Steel Spacer delivers thermal performance, structural integrity and reliability to maximize your new window investment.

3. Insulating Argon Gas

Argon gas is a colorless, odorless, nonflammable, nontoxic, and safe inert gas that is heavier than air. When the air between two window panes is replaced with argon gas, the energy efficiency of the window increases. Additionally, it acts as a sound barrier to help make your home quieter.

Climatech Insulated Glass Package Sell Sheet PDF Download

Available in multiple profile and configurations, grid patterns are designed to further showcase your homes architectural style. Additional decorative options are available, including simulated divided lites.

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1 1/4" Simulated Divided Lite with shadow bar

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7/8'' Simulated Divided Lite with shadow bar

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Double Prairie

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Profiles give the stylistic appearance of individual glass panes and are offered in multiple colors and styles.

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Flat White

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Flat Beige

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Contoured White

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Contoured Beige

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Contoured Rich Maple

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Contoured Light Oak

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Contoured Dark Oak

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Contoured Foxwood

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Contoured Cherry

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In todays world we need to look beyond just the aesthetics of our new windows. We find our environment captured by an increased focus on energy, and we can help you reduce energy consumption with ENERGY STAR qualified windows from Alside. Since windows are roughly 80% glass, its important to choose an energy-efficient ENERGY STAR qualified window.

Alside windows meet stringent ENERGY STAR performance requirements in all U.S. climate zones. Paragon Partners can help you choose the best insulated glass package to meet the ENERGY STAR requirements for your home.

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