Waterproofing Materials Products

Waterproofing Materials

Waterproofing materials are a key part of keeping foundations, walls, slabs, and other structures protected from moisture intrusion. At 9 Brothers Building Supply, we stock waterproofing materials for contractors working across Long Island, and we help homeowners who want the right products for repairs, upgrades, and new construction. Our customers ask for dependable jobsite materials that help manage water, protect below grade surfaces, and support long term performance. We carry practical solutions for everything from concrete joints to drainage layers and temporary site protection, and we serve Long Island from our yards in Brentwood, East Setauket, and Riverhead.

Types Of Waterproofing Materials We Carry

We stock a range of waterproofing materials for foundation work, drainage control, joint protection, and site coverage. Product options include:

• MEL-DRAIN 5035 Roll
• 4″ PVC Waterstop
• 6″ PVC Waterstop
• All Weather Roof Cement 10OZ
• Anti-Hydro
• G FORCE Blue All Purpose Tuff Tarp
• Poly Tarp
• Poly Sheeting
• And more

These materials are used by contractors handling commercial work, residential foundations, site prep, flatwork, retaining structures, and other projects where water control matters. We see this a lot on Long Island jobs, one product handles drainage, another seals a penetration or joint, and another protects materials or open work areas during changing weather.

Brand Options

We carry products from W.R. Meadows, a brand many contractors know for dependable waterproofing and construction solutions. Their materials are commonly used for below grade protection, joint treatment, drainage applications, and moisture control around concrete and masonry work.

When customers ask about brand selection, they usually care about job compatibility, ease of installation, and whether the product fits the phase of the project. That is where we help. Our team can walk you through what makes sense for foundation walls, roof patching, slab joints, or temporary moisture protection so you leave with the right material for the job.

Where Waterproofing Materials Get Used

Waterproofing materials get used in residential, commercial, and municipal work throughout Long Island. Contractors use them for foundations, retaining walls, concrete pours, expansion joints, utility structures, crawl spaces, and site protection. Homeowners often need them for foundation repairs, leak prevention, patching, or managing moisture around basements and exterior walls.

Here’s one real tip we give at the counter, plan your waterproofing system before the wall is backfilled or the slab is poured. It is much easier to install drainage products, waterstops, and protective sheeting correctly when the sequence is mapped out early. We also tell people to order a little extra poly sheeting or tarp coverage for overlap and field adjustments, especially when weather or site conditions are unpredictable.

Pickup And Delivery Across Long Island

You can pick up waterproofing materials at our Brentwood, East Setauket, or Riverhead yard. We load fast, which helps contractors keep crews moving and helps homeowners get what they need without wasting time. We also offer delivery across Long Island and into NYC for projects that need materials brought directly to the site.

Call ahead if you want your order staged. Our team can help make pickup smoother, and we can help coordinate delivery when timing and site access matter.

Ready When You Are

Whether you are handling foundation waterproofing, roof patching, concrete joint protection, or site coverage, 9 Brothers Building Supply has waterproofing materials ready for Long Island jobs. Stop by one of our yards, call ahead and we’ll stage your order, or ask us about delivery across Long Island and NYC.