New Castle Building Products

New Castle Building Supply is hands down one of the best suppliers I’ve worked with. From start to finish, the service was professional, friendly, and extremely knowledgeable. The staff took the time to answer questions, make solid recommendations, and ensure I had exactly what I needed for the job. Their materials are high quality, pricing is fair, and everything was ready when promised. You can tell they care about their customers and take pride in doing things the right way. I highly recommend New Castle Building Supply to contractors and homeowners alike — I’ll definitely be using them again.

I don’t usually leave reviews, but I felt like New Castle deserved one. Every time I’ve worked with them, it’s been smooth, fast, and hassle-free. No mix-ups, no delays, just straight-up reliable service. Gary, Patrick, Jon, and Tony are the real deal. They know what roofers and contractors need, and they make it happen without the runaround. I can always reach them and there aren’t any delays. I highly recommend them to anyone who’s stuck in making a decision. Let me be the guy to tell you that you would be making the right decision

⭐️⭐️⭐️⭐️⭐️ New Castle Building Products is hands down the best supply house I’ve worked with! The service here is unmatched — fast, reliable, and professional every single time. Huge shoutout to Gary, Patrick, Jon, and Tony — these guys are absolute pros. They always go the extra mile to make sure orders are smooth, accurate, and on time. You can tell they genuinely care about your success and treat every customer like a priority. Inventory is always solid, pricing is fair, and the turnaround time is impressive. Whether it’s a last-minute need or a large-scale project, New Castle always comes through. If you’re in the trades and not using New Castle, you’re missing out. These guys don’t just supply materials — they fuel your business. Highly recommend!

I bin dealing with them for years everyone friendly except Gary always on the phone but its cool haha

The staff is extremely professional and knowledgeable! Always accommodating! Everyone in the Ronkonkoma branch is always looking to help out!! Can’t say enough all great people!! Happy to go in everyday!!