As Hawaii's largest locally owned and operated roofing supply company, we've been serving your roofing supply needs since 1983.

In the beginning, co-founder Ritchie Mudd started RSI with a Matson container converted into an office. Now RSI are located conveniently on four islands Oahu, Maui, the Big Island, and Kauai with over 65 employees.

Many of the people hired in the previous years are still with RSI. These fellow workers show a commitment to growth, a positive attitude, and strength of will to make RSI Hawaii's No. 1 roofing and building material supplier through quality service, professionalism and Kama'aina friendliness. We provide you with exceptional service and most importantly, we get the job done!

RSI focuses on customer service to set us apart from competition. Our friendly local service enables us to be the market leader in the industry. The philosophy of customer service can be summed up in phrase, "On time, On Budget, On the Roof." With RSI, rooftop delivery is standard.

From the onset of our venture, RSI geared up for complete customer servicing by investing in vehicles and equipment designed specifically for rooftop delivery. Our philosophy is that when you purchase your materials from RSI, you've not only purchased the best supplies, you've also invested in the best service and the best people in the industry, and not to mention, the best peace of mind.

Come see us for the largest product line. Everything from roofing, siding, trims, waterproofing, building materials, and accessories!