Staff is friendly and knowledgeable, and compared to box stores and suppliers, prices are very…read morereasonable. Quality is better than average box store or Ikea. If you know or care about the difference between an MDF cabinet box with laminate doors and a plywood one with solid maple doors, you will appreciate this place. They have everything you need to finish a home on the interior and exterior. Doors, windows, siding, flooring, cabinets, tubs, on and on. There are some deals, some not. Know your prices headed in. Inventory varies and if their website has it, it may be for order, or only available when they randomly get stock. They are conscientious about what they have or don't if you call ahead, but were a little impatient with a longer list. Their website says "We pride ourselves on providing excellent sales and delivery services to the Cecil County, Harford County, northern Baltimore County, New Castle County, Delaware and Chester County, Pennsylvania areas," but they do not go as far as the PA counties mentioned, at least not for homeowner orders. So be local or be prepare to haul stuff home. Made a trip today but they didn't have what I needed in a price competitive with another liquidator, though they definitely had great deals compared to Depot, Lowe's and my supplier. Had I not known of my other source, I definitely would've still saved 40% on fiberglass entry doors, and about 15% on fiberglass patio doors. They also offer a much better selection than a home improvement box store.

This place is amazing! There are so many choices in supplies to choose from and the staff is very…read moreknowledgeable on everything. We met with Phil to discuss our kitchen remodel design and he went thru the plans in detail, showing us each and every cabinet, drawer and accessory that was incorporated into our design . He asked questions and answered questions quickly and professionally. We are very happy to be working with him on our remodel.

Billy Seymour was extremely professional and helpful. 10/10 recommend national lumber for your…read morekitchen/lumber needs.

I've stopped here several times for basic hardware and they always have what I need and always have…read moreextremely helpful staff to point you in the right direction. Today, I needed a window to fit in a specific size hole. They had no problem designing something that would work and getting it custom made. Highly recommend.

We needed more vinyl siding for a garage wall, we had most of it sided last year and had planned to…read moreput a second garage door in, that never happened . So our handyman constructed a wall over that opening, and it needed siding. We originally bought the siding from 84 lumber so we figured they would still have it. I called and instead of a Hello-Hello start it is "What is your project", I really didn't like that. Please just answer the phone and talk, people will tell you what they want because they are calling to find something out. As it turns out, the siding would have to be ordered, we needed it right away and went elsewhere.

Building a shed, the big box stores didn't have the correct lumber. Called 84 and they had it in…read morestock. Bobby helped me tremendously, good group of guys, very friendly, and unlike most of the other places, they actually knew what they were doing.

I was a little bit unsure of buying material for my new deck from a company out of state,…read moreespecially when the price was about a third of what I would pay at the local building supply warehouses. But Ironstone was awesome! Mike helped me and a friend get a great deal on the materials needed to build both our deck. Great prices, professional organization, and very helpful answering any questions or concerns I had. Highly recommend this company for great prices and excellent customer service.

This is a great company! they have been in business for a long time and have always treated their…read morecustomers fairly. If I need any thing to fix my home, that's the first place I go.

From the owner: State Line Building Supply is a full-service company that specializes in the delivery of gypsum…read morewallboard, acoustical ceiling supplies and other building materials. It offers a range of products for commercial and residential applications, as well as is responsible for jobsite deliveries of drywall, insulation, metal studs and related accessory products. The company provides its services to a variety of commercial and residential clients. State Line Building Supply offers wallboard products, such as gypsum sheathing, shaftwall liners, cement boards and Vinyl Covered Durasan. It also provides acoustical supplies, including mineral fiber ceiling and vinyl-faced gypsum panels, suspended and drywall grid systems, sealants, flexible wall molds, and hanger and tie wires. The company has operations in Delaware.

AGS was recommended to me by our Realtor. I am extremely satisfied with their service and would…read moredefinitely like to recommend them. 1) Melanie (client servicing) was very prompt in responding. Even though I got back to her after couple of months, she honored the estimate that she had given to me earlier. She even went out of her way to get me in touch with a contractor to help prep the existing cabinets before installing the granite countertops. 2) The guys from AGS were all very good and extremely polite. They put drop cloths on the floor and made sure to clean up any messes before they left. 3) I was a bit unsure of how AGS would be after reading their Yelp reviews (since I had placed the order before reading the reviews). But I have to say that they did not disappoint me at all in terms of pricing and services. 4) Last but not the least, their store has two big cats. They steal away all the show and are super adorable.

Really excellent customer service. Beautiful slabs with a great variety to select from. Very…read morepleased with my countertops and backsplash. Responsive and pleasant installers. Don't bother with any other granite companies - these people are the absolute best!

I bought flooring here a year ago for a bathroom renovation. At the time I bought enough for my…read morekitchen...or so I thought. My contractor pointed out that I needed a few more boxes! I called and the salesman told me that there was a change in the thickness of the product!! He called around to local stores and found some older boxes. We picked them up!! Problem solved! I appreciate people that go out of their way to solve a problem. Thanks so much for your assistance and kindness!! Thanks

Helped me out so much, great dudes work there and made my life so much easier. Couldn't be anymore…read morehappy.