Replacement Doors

Siding Replacement

Your siding installation isn’t just about aesthetics. It’s also about keeping your home sealed off, properly insulated, and shielded from Mother Nature’s harshest elements: wind, hail, water, ice, snow, and sun. At O’Sullivan Installs, we understand that good replacement siding has to perform a variety of functions, and we offer the highest-quality products to protect your home!

Vinyl Siding
Alside

Vinyl Siding

Of all the most common and popular siding options across NH and MA, vinyl tends to be the most budget-friendly material. Because Alside vinyl siding never peels, rots, or requires repainting, it’s a long-term investment with minimal upkeep required.

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Engineered Wood Siding
Smartside

Engineered Wood Siding

Like the name suggests, engineered wood looks like natural woodgrain but offers the many superior benefits of a specially crafted composite. You can enjoy the warmth and sophistication of wood—only in a material that’s much stronger, safer, and more pest resistant.

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Offers from o'sullivan installs

Check out our limited time offers

We stand behind our work, so we offer a warranty on all our products and services.

Like what you see from O’Sullivan Installs? Refer a friend and get rewarded!

Why choose O'Sullivan Installs

Our Five-Star Siding Replacement Options

We Focus on Your Ideas

We Focus on Your Ideas

We may be siding experts, but you’re the expert of your home! We’ll listen to you and put your wants and needs first.

We’re Award Winning

We’re Award Winning

We’ve earned a number of major awards since 2008, including the Angie’s List “Super Service Award” for 10+ years in a row.

Workmanship Guarantees

We Offer Top Warranties

Thanks to our highly acclaimed brand partners, we’re able to offer lifetime manufacturer warranties on our siding.