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6AM - 4:30PM
4701 Veterans Memorial Hwy, Holbrook
Building Materials
“I’m a homeowner doing a DIY masonry project. If I didn’t call them I would have overpaid on the wrong material. I explained what I was doing. They explained what I needed. Pricing is so much better than home chepot it’s not even funny”
“Excellent , very customer friendly. My sales associate answered all my questions I was able to find what I was looking for. The man in the office explained to me everything on how and what I needed to do my job. I can't believe how helpful everyone is. The pizza is good ?”
“These guys are great. We work multiple states and they have never failed to provide great on time product delivery. If you have questions someone is always available. I personally work with Barbara and she is the best. If they have a product you need you should for sure give them a look.”
“The customer service in this Alside location is amazing. They went above and beyond to help me, even though I had a small order. Efficient, knowledgeable, and very nice to customers.”
“I have been going to Sider Lumber for my windows, doors, lumber, moldings, siding, roofing, hardware...you name it really - for over 30 years. The staff are all very knowledgeable and eager to assist clients. They go out of their way to find solutions and offer advice on the best products for my projects. And most importantly, they are trustworthy. They provide the great service and customer experience you would expect from a small town family business with all the benefits of large scale national company such as a quality showroom, large selection of in stock tools and supplies, extremely competitive pricing and a large selection of the nations top brands for just about all home building materials.”
10AM - 6PM
2111 Lakeland Ave, Ronkonkoma
Building Materials
“Anthony and Scott picked up my donated furniture and were truly incredible. They were kind, professional, and incredibly efficient. The entire process was smooth and stress-free thanks to them. Awesome guys!!”
“New name, from Allied to Beacon to QXO. Do not know if there are any changes planned. The staff is always helpful
I generally am buying small amounts of products for my apprentice class and the practical application of the materials”
“Stone yard rookie? Same. ?
Walked into All County Block & Supply not totally sure what I needed for a path between our deck and shed—and walked out feeling like I could probably build the whole thing myself.
This place has everything. If you can’t find it here, you’re not finding it anywhere. What really stood out is how they have everything laid out—you can actually walk through and see the different styles installed, not just stacked up. There’s plenty of signage and labeled sections, which makes comparing options a lot easier and takes away that “where do I even start?” feeling.
We were able to look at different stone options side by side, get a real feel for what would work, and actually visualize the project before making a decision—which made a huge difference.
The team here really knows their stuff—friendly, patient, and genuinely helpful without any pressure. You can tell they enjoy what they do, and it makes the whole experience feel easy (and even fun), which is not something I expected walking into a stone yard.
Only heads up: the parking lot can feel a little tight and busy with trucks and people moving around… but honestly, that just means you found the right place.
Call it… handled. ?”
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“I’ve been coming to Florence personally and professionally and they always heave friendly staff at the counter like Jennifer. They were nice enough to give me roofing samples, and I ended up purchasing my roofing project with them and couldn’t be happier.!”