Our Services

Window Replacement Services for Long Island

Whether you need a single window replaced or a full-house upgrade, we offer every major window type and brand. All installations include permit handling, professional fitting, foam insulation, interior and exterior trim, and a thorough cleanup.

Vinyl Double-Hung Windows

The most popular replacement window on Long Island. Tilt-in sashes for easy cleaning, vinyl frames that never need painting, and excellent energy efficiency. Ideal for colonial, cape, and ranch homes across Nassau and Suffolk.

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Casement Windows

Crank-open design provides maximum ventilation and unobstructed views. The compression seal creates the tightest seal of any operable window style — perfect for kitchens, bathrooms, and above sinks.

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Bay & Bow Windows

Bay windows (3 panels) and bow windows (4-5 panels) project outward to create additional space, natural light, and a dramatic focal point. Custom-sized to your existing opening.

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Energy-Efficient Windows

Triple-pane glass with dual low-E coatings and argon gas fills. Cut heating and cooling costs by up to 30%. Qualifies for federal energy tax credits up to $600.

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Wood-Clad Windows

Real wood interior with maintenance-free exterior cladding. The premium choice for high-end homes, historic properties, and homeowners who want the warmth and character of real wood.

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Window Repair

Foggy glass from failed seals, broken cranks, stuck sashes, or damaged frames — we repair all window brands and styles. Often more cost-effective than full replacement for newer windows.

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Why Choose Us

The WCLI Difference

Free In-Home Estimate

We measure every window, assess your frames, and provide a detailed written quote — no pressure, no hidden fees.

Permit Handling

We pull permits in every Nassau and Suffolk town and schedule all required inspections on your behalf.

Factory-Trained Crews

Our four install crews are factory-certified by Andersen, Pella, and Harvey. No subcontractors, ever.

10-Year Workmanship Warranty

On top of the manufacturer's lifetime warranty, we guarantee our installation work for a full decade.

Need Help Choosing?

Our window specialists will help you pick the right style, material, and brand for your home and budget.

(631) 565-8126 Request Estimate