1 (631) 732-7700

394 Middle Country Rd. Selden NY 11784 US

Exterior Architectural Bronze

Exterior White

Interior Rich Maple WoodgraIn


Preservation High-Performance Windows encompass all of the hallmarks of exceptional window design - unsurpassed quality, functional beauty and maintenance-freedom - in custom styles to masterfully complement your home's architecture. Plus, Preservation Windows are designed to help reduce heating and cooling costs and make your home more comfortable.


✔ Pass Air infiltration
✔ DP55 Water resistance
✔ DP65 Structural load

Preservation Windows are certified by subjecting them to the battery of ASTM (American Society for Testing and Materials) tests for air infiltration, water infiltration, and structural performance. These tests are part of the accepted industry standard for windows.* Independent third parties, from an AAMA (American Architectural Manufacturers Association) approved testing laboratory, witness all tests. AAMA is a national trade association that establishes voluntary standards for the window and door industry. The AAMA administrator issues the certification.


Preservation Windows are tested for air infiltration using the industry's rigorous air infiltration resistance testing procedure. Test ASTM E 283.


Preservation Windows are subjected to a driving water spray of five gallons per hour/per square foot (equals rainfall of eight inches per hour) at a simulated wind speed of over 57 mph. Test ASTM E 547.


Preservation Windows are subjected to interior (negative) and exterior (positive) structural load conditions simulating a wind speed of over 190 mph (the highest ranking on the Hurricane Damage Potential Scale is a Category 5, which is reserved for those hurricanes which exceed 155 mph wind speeds). Test ASTM E 330.

*(ANSI/AAMA/NWWDA 101 I.S. 2-97)

Exterior Sand Dune

Exterior Taupe

Interior Cherry Woodgrain

Interior Dark Oak Woodgrain

Exterior Castle Gray

Exterior English Red



The heart of the Preservation platform is Origin II™ premium vinyl resin. This advanced vinyl is rugged, durable, and virtually maintenance-free. The material's low thermal conductivity makes it the perfect choice for window manufacturing. It assures that Preservation Windows will never rot, peel, blister, swell, or deteriorate from corrosion or pitting. Preservation's Origin II vinyl also features through-and-through color compounding, so your windows will never require staining or painting. And, Preservation utilizes natural warm white and taupe for its base vinyl color.


Every sash and masterframe corner of the Preservation Window features IntegraWeld Fusion Welding, a technologically advanced method of construction that delivers superior strength.  The IntegraWeld method produces full-contact welding points, and does not require below-the-face flash clean up. The result is maximum strength welding with a clean low-spread finished appearance. And, unlike mechanically fastened windows, Preservation Window corners will never work loose, or leak air or water.


Preservation Double-Hung, Sliding, and Casement Windows feature a beveled exterior masterframe. This masterframe design helps the Preservation Window accommodate differing installation methods and architectural styles. It helps to ensure that every Preservation Window installation will look and perform great, now and for generations to come.


Our double-hung and sliding windows feature Maxum33™ fiberglass sash meeting rail reinforcements. Maxum33 adds extra strength to the sash meeting rails to help prevent flexing during heavy winds. 


The premium vinyl resin used in the construction of Preservation Windows provides superior energy efficiency. But we've taken thermal performance even further by incorporating Progressive Efficiency high-density carbonized polystyrene insulation into both the sash and masterframe of our windows. Preservation's insulation is also pre-expanded to eliminate the inconsistencies found with some insulating methods.


Our double-hung windows feature a TrueCapture™ sloped sill. This sill design incorporates the elegant look of a traditional sloped sill with the energy-efficient properties of a capture sill. The result is a great-looking window that is better able to withstand harsh elements.


Our double-hung windows feature the EvenForce™ block and tackle balance system. This system ensures smooth and easy sash opening and closing and has been rigorously tested for decades of operation. 


BetterVue® screens do for your window what high-definition technology has done for television: it maximizes the view by making it sharper and more brilliant. Better airflow, a clearer view, and superior insect protection versus standard fiberglass screens.

Interior Foxwood Woodgrain

For more than 30 years, Eastsiders has provided exceptional window & patio doors installations for homes and businesses throughout Suffolk and Nassau counties on Long Island. Our commitment to superior craftsmanship and outstanding customer service has defined our legacy as a true industry leader.

For a variety of looks from traditional to contemporary, no matter what the application is, Eastsiders has you covered. Choose from a complete product line that offers Single-Hung, Double-Hung, Sliding, Casement, Awning, Swing & Clean, Bay, Bow, Garden, Picture and Specialty Shape Windows as well as Sliding Patio Doors. You’ll find that the combination of many styles and configurations will work well to enhance your home’s appearance.

In addition to a variety of window configurations and colors, you have an extensive choice of grid patterns and glass styles to create the perfect finish to your window design project.

The measurement and installation of windows is just as important as the quality and features of the windows themselves.   We understand that and train our employees to the highest standards.

We expertly install many brands of windows including Preservation Collection, Alside, Andersen, Pella, M.I., Atrium, Simonton, Wincore and Marvin.  Eastsiders highly recommends Preservation Collection windows above the rest for their exceptional value, warranty, energy efficiency, and service.

Interior Taupe

Suffolk License # 14,380 Nassau License # H18E6350000  expert installation of siding, windows, roofing, kitchens, bathrooms. Copyright © Eastsiders       Privacy Policy.

Exterior Hudson Khaki

Interior Light Oak Woodgrain

window installation

Exterior Desert Clay

Exterior Onyx

Exterior American Terra

Quality and experience you can trust