Hawaii's Largest Roofing and Supplies Company

On Time, On Budget, On the Roof

RSI Roofing & Building Supply is Hawaii's largest roofing supply business. Since 1983, we have been providing only the finest roofing and building materials at the most affordable prices. We have the experience you want, and the service you expect.

Whether you're a contractor or a homeowner, you owe it to yourself to stop by RSI for all your roofing and building supplies, as well as waterproofing and insulation product needs. With our extensive showroom and knowledgeable staff, selecting the right products for your new construction or home improvement project has never been so easy! Stop by today in Honolulu, Hawaii, to view our showroom and see the wide range of roofing and building supplies available to you. You’ll be glad you did!

Getting Our Start
Ritchie Mudd started RSI in 1983, and the company has since grown to include locations on the 4 islands of Oahu, Maui, Kauai, and the Big Island. With the customer in mind, we have geared our roofing and building supplies toward convenience by investing in vehicles and equipment designed specifically for rooftop delivery. Our customer service philosophy can be summed up in 1 phrase: "On time, on budget, on the roof."

We Keep You Cool & Dry with These Roofing & Building Supplies: