Serving Massapequa & Nassau County

Expert Sheet Metal Fabrication in Massapequa, NY

Trusted by HVAC contractors and businesses throughout Massapequa, Massapequa Park, and North Massapequa. Precision ductwork, adaptor curbs, and custom fabrication delivered to your job site.

Get a Free Quote View Our Work
20+
Years in Business
100%
Client Satisfaction
Free
Quotes & Estimates
Free
First Order Delivery
Why Choose Us

Why Massapequa Chooses All Island Sheetmetal

Your neighborhood fabrication shop, just minutes away in West Babylon.

All Island Sheetmetal shop near Massapequa, NY

A Short Drive from Massapequa

Located on Wyandanch Avenue in West Babylon, All Island Sheetmetal Inc. is less than 20 minutes from Massapequa via the Southern State Parkway. That proximity means faster turnaround on orders and same-day pickup when you need it.

Our team of 15+ skilled fabricators has been supplying Massapequa-area HVAC contractors with precision ductwork for over two decades. Whether you're working on a residential retrofit in Massapequa Park or a commercial buildout along Sunrise Highway, we have the capacity and expertise to keep your project on schedule.

Free delivery on first orders — including to Massapequa, North Massapequa, and Massapequa Park.

What We Do

Sheet Metal Services for Massapequa Contractors

Full-service fabrication for HVAC, commercial, and residential projects in the Massapequa area.

TDF / Slip & Drive Ductwork

Transverse duct flange systems built to your specifications and ready for installation at your Massapequa job site. Every piece is knocked, slipped, and eared to the highest standards.

Spiral / Oval Ductwork

Round and oval spiral duct in standard and custom diameters. Ideal for clean airflow distribution in commercial spaces across Nassau County.

Adaptor Curbs

Custom rooftop adaptor curbs fabricated to your exact measurements. We regularly supply curbs for Massapequa-area rooftop HVAC equipment transitions.

Exhaust Curbs

Precision exhaust curbs and equipment rails for commercial rooftop installations. Built to spec and delivered to your local job site.

Welded Stands

Heavy-duty welded equipment stands and supports for rooftop units, condensers, and more. Ready for pickup or delivery to Massapequa.

Custom Fabrication

Service trays, drain pans, pipe portals, wall brackets, access panels — if you can draw it, we can build it. Drop off your prints or email them for a free quote.

What Clients Say

What Our Clients Say

Hear from clients who rely on All Island Sheetmetal for their projects.

Excellent craftsmanship, and excellent customer service. If you want a perfect fit, clean cuts, smooth edges, and quick delivery — use All Island Sheet Metal. My company has been using them for years, and we will not stop. They make sure to provide you with what you need, and they make it seem as simple as getting a part at a local supply house.
Daniel Campbell
Google Review
I was in a rush for some stainless fittings. They got them to me same day as needed. Friendly on the phone and easy to work with.
Cole Zimmer
Google Review
Awesome guys. I'm a small business, I needed something small and they were awesome. Made exactly what we needed and explained everything. Great guys, reasonably priced, excellent experience. Would do business with them all the time.
Mike Walsh
Google Review
Our Work

Recent Fabrication Projects

A sample of ductwork, curbs, and custom fabrication from our West Babylon shop.

Rectangular duct pieces staged for delivery
Large spiral duct elbows
Rooftop adaptor curb with transition
Custom plenum with access door
View Full Gallery
Get in Touch

Serving Massapequa & Surrounding Areas

Drop off a print, email it, or fax it and we'll quote it for free. We deliver to Massapequa and all of Nassau County.

Phone

(631) 491-8454

Email

orders@allislandsheetmetal.com

Hours

Monday – Friday: 7:00 AM – 5:00 PM

Fax

(631) 491-1270