Building Materials

Lumber, Masonry, Insulation, Attic Fans & Fencing

Lumber Materials on Kauai

Aloha Roofing Supply has a wide variety of high quality, building materials and products for residential and commercial construction and masonry projects.  In addition to our fine selection of roof products, our retail location in Kapaa is well stocked with lumber, plywood, siding, drywall, concrete block, rebar, cement, waterproofing materials, insulation, ag fencing and much more.  You can see a sampling of our specialty products below.  Need delivery? Let us deliver the materials to you, in most cases, we can arrange same day delivery.  Contact us at phone (808) 378-4446.

Lumber, Plywood, Siding


Aloha Roofing Supply has a wide selection of treated lumber, plywood and  siding for your residential and commercial construction projects. 


Trim & Molding


Aloha Roofing Supply has the largest stock of WindsorONE trim and moldings on Kauai.   Click here to see more styles and specs.


Ipe Decking


Ipe wood is a type of hardwood that comes from South America, mainly Brazil. It is also known as Brazilian walnut or ironwood. It is one of the most popular choices for decking because of its many benefits, such as:


Durability: Ipe wood is extremely dense and hard, which makes it resistant to rot, decay, insects, fire and weather. It can last for decades with minimal maintenance and has a Janka hardness rating of 3,680 pounds of pressure.


Aesthetics: Ipe wood has a rich brown color and a fine grain that gives it a luxurious and natural look. It can also be stained or oiled to enhance its appearance or left to age gracefully to a silver-gray patina.


Sustainability: Ipe wood is harvested from sustainable forests that follow strict environmental and social standards. It is 100% natural and does not require any chemical treatments.


These are some of the reasons why Ipe wood is a great option for decking. We have various sizes in stock and custom sizing is available.  If you want to learn more about Ipe wood or get a free quote, please stop by or give us a call.

Foundation, Masonry, Waterproofing

Aloha Roofing carries a variety of concrete block, bag concrete, rebar and waterproofing products for foundation and masonry projects.


Gaco Western

GacoDeck and GacoRoof are a building’s first line of defense against the elements, no matter the season. Read More.



The HydroStop® PremiumCoat® Finish Coat is a water-based acrylic top coat. Used in conjunction with the HydroStop® PremiumCoat® Foundation Coat and HydroStop® PremiumCoat® Fabric, it creates the HydroStop® PremiumCoat® System, which is a roofing and waterproofing solution for coating, recover, re-roof and new roof applications. It provides a fully-adhered, adhesively attached, breathable acrylic membrane and a complete roof cover. Read More.



APOC sells below grade products that feature 60 millimeter sheet waterproofing. Our water based, elastomeric products can be applied to further waterproof the membrane. Protection board and bridge deck planks further ensure water tightness. ASTM emulsion damp-proofing is offered in spray, brush and trowel grades. Read More.


Glaze & Seal

A contractor’s favorite for over 50 years! Glaze ‘N Seal offers a complete line of sealers and maintenance care products for concrete, masonry, tile, grout, and in/outdoor stone. 

Read More.




Knauf Insulation

Knauf Insulation EcoBatt® Insulation combines sand, one of the world’s most abundant resources, recycled bottle glass and ECOSE Technology to create the next generation of sustainable insulation…naturally from Knauf Insulation. Read More. 

Agriculture Fencing


Aloha Roofing Supply carries agriculture fencing materials for fence building and repair projects.


  • CCA-treated Fence Poles
  • Metal T Posts – HDG and green painted
  • Ag Fence Fabric – various sizes

Chain Link Gates and Panels


Get your chain link gates and panels for quick animal pen, garden projects, repairs, and more.




4, 6′, and 8′ Wide x 4′, 5′, and 6′ Tall

Clear Industrial Fiberglass Panels


Corrugated – 8′, 10′ and 12′ Tall
J-Rib – 12′ Tall

Solar/PV Waterproof Roof & Attic Fans


Aloha Roofing Supply carries photo voltaic, brushless, DC, waterproof, roof fans.:


  • 40 watt brushless motor;
  • 316 stainless steel construction;
  • 15 year warranty (original purchaser / original address only);
  • IP68 motor rating – only one of it’s kind in a Photo Voltaic fan – rated to run fully submersed in saltwater for over one hour;


Click here for more information…

Structural Steel


Aloha Roofing Supply now carries structural steel in a large selection of sizes and lengths.


  • Rectangular Tube
  • Square Tubing
  • Structural Channels
  • Bar Size Tee
  • Structural Angles
  • Flat Plates and Sheets
  • Hot Dip Galvanized

Proud to sell these fine products…

Have questions about our Specialty Products?