Window Services That Add Value, Style & Energy Savings

Whether you’re replacing drafty windows, upgrading your home’s look, or adding natural light with a skylight, Alexander Home Improvement Corp delivers state-of-the-art installation and high-performance products. With over 25 years of experience, we serve homeowners across Long Island & Nassau County with personalized service, precision workmanship, and superior products that last.

We make window and skylight installation easy — from custom fit measurements to final walkthroughs — with a focus on efficiency, affordability, and outstanding results.

Window Installation, Replacement & Custom Solutions

Replacing your windows can transform your home from the inside out. At Alexander Home Improvement, we offer:

Window Replacement – Upgrade aging windows with energy-efficient models that lower heating & cooling bills from day one.
New Window Installation – Adding a new room or remodeling? We’ll help you choose the best windows to suit your space.
Custom Windows – Unique shapes, sizes, or finishes? We design windows to match your vision exactly.
Skylight Installation – Let more daylight in with leak-proof, high-performance skylights from top brands.

All of our windows are custom-measured, precision-fitted, and installed by professionals for optimal performance.

Types of Windows We Install

Every home is different — and we’ve got a window for every style.

Double-Hung Windows – Classic and versatile with tilt-in sashes for easy cleaning.
Casement Windows – Hinged at the side for wide, unobstructed views and excellent ventilation.
Bay & Bow Windows – Expand your space and bring in more light with beautiful outward projections.
Picture Windows – Maximize your view with a clean, fixed-glass design.
Slider Windows – Simple, space-saving design that glides open horizontally.
Custom Shapes – Arches, circles, triangles—you dream it, we install it.

Why Customers Trust Us

Certified. Trusted. Experienced.

Over 25 years of experience
Custom-fit installations that maximize energy efficiency
High-quality windows and skylights that last
Financing options available
Repeat customers & word-of-mouth referrals
A+ Rated & Fully Licensed

Why Add a Skylight?

Skylights are one of the most effective ways to naturally illuminate your home and improve indoor airflow. Benefits include:

Brighter interiors – Great for hallways, bathrooms, and living rooms
Improved ventilation – Allows warm air to rise and escape during summer
Energy efficiency – Reduces dependence on artificial lighting and heating
Privacy-friendly natural light – Ideal for spaces where standard windows aren’t practical

We offer standard and custom-fit skylights for new installations and replacements — using top-tier brands like Velux and Supreme.

Additional Information On Skylights

Pro series copper flashed skylights are the best option for your residential or light commercial project. This is our premier skylight for pitched and flat roof applications. Standard and custom sizes available.

Features include:

1” Insulated Tempered Low E Argon Filled Glass
Primed Pine Curb
Heavy Duty (6063 T-5) Aluminum Extruded Top Fully Welded and Powder Coated
Thermally Broken PVC Frame/16 oz. Copper Flashing
Bronze Cover (Custom Colors Available)

Window Gallery

Take a look at some of our recent window transformations:

Flexible Financing Options

Dream big—without financial stress. We offer flexible financing to make your custom home or renovation more affordable. Ask us how to qualify during your free consultation.

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