Koolau Roof Tech
Company Overview
Homeowners in Hawaii have struggled to find a reliable way to care for their roofs until now. Our unique natural asphalt shingle rejuvenator is 100% safe for humans, pets, and your property. As Hawaii's first roof rejuvenation business, Koolau Roof Tech will assess your roof onsite and furnish a thorough photo report with our insights. I’m Kirt Kobashigawa, the owner and operator of this small, locally owned business, and I promise to provide a five-star service that reflects our local values. I bring three generations of experience in residential construction. Both my grandfather, Taro, and my father, Mel, established successful construction businesses on the Windward side of Oahu. Having worked with them from a young age, I carry that priceless experience into Koolau Roof Tech. I’m Kirt Kobashigawa, the owner of this small, locally owned business. In addition to learning how to build a home from scratch, the key lesson they taught me was how to prioritize customer service. Our family has consistently emphasized the importance of trust in client relationships, and that commitment remains strong at Koolau Roof Tech. My name is Kirt Kobashigawa, the owner and operator of this locally owned small business. We have always valued building trust with our clients, and that tradition lives on at Koolau Roof Tech.
Business Services
- Roof cleaning
- Roof inspection
- Roof repair
Business Location & Hours
| Mon: | 8:00 AM - 5:00 PM |
| Tue: | 8:00 AM - 5:00 PM |
| Wed: | 8:00 AM - 5:00 PM |
| Thu: | 8:00 AM - 5:00 PM |
| Fri: | 8:00 AM - 5:00 PM |
| Sat: | 8:00 AM - 5:00 PM |
| Sun: | 8:00 AM - 5:00 PM |
Recommended Customer Reviews
Kirt exemplifies professionalism, courtesy, extensive knowledge, and meticulous organization, all while delivering unparalleled service. His genuine commitment to assisting clients is evident in the consistently exceptional quality of his work and service. Throughout our discussions, it was evident that Kirt invests considerable effort in research and steadfastly stands behind the products he employs and the services he provides. Without a doubt, I am so glad that he was able to provide my family peace of mind when it comes to the life of our roof. Mahalo plenty, Kirt! You da man!
Kirt was very professional, polite, and detailed. He was very responsive from beginning to the end. Never doubted the quality of his work. I would recommend him to anyone with any roof issue.
I had a leak in my roof and I contacted Koolau Roof. They responded quickly and we were able to set a time for a visit. Kirt came to the house and did some quick repairs to plug damaged parts of the roof. He wrote a detailed report. I was really blown away by the attention to detail and his genuine care about the roof and home overall. For my next large roof repair projecti will certainly hire Kirt and his team.
Gary B.I contacted Koolau Roof Tech to inspect our residential roof and get an assessment of any issues that needed to be addressed before the winter storm season. Kirt Kobashigawa immediately responded to inspect the roof and provided a detailed assessment of services Koolau Roof Tech could provide. He identified areas that needed to be resealed and took care of a portion of our roof that we previously experienced a leak. This was done just in time and withstood the heavy rains of December 2023. Kirt Kobashigawa and Koolau Roof Tech have my highest appreciation for providing an honest assessment, and roofing services at a fair price. I'd gladly recommend Koolau Roof Tech to my family and friends. Absolutely great service! Thank you, Kirt!
Kirt and his father recently did our roof in Palolo Valley and did a great job. They explained things and answered our questions. They also provided excellent photos before and after. I appreciate they offer an environmentally safe way to preserve the life of our roof. I highly recommend them.
Betsy T.Koolau Roof Tech is an excellent roofing company. Since we are in the process of installing solar panels & our asphalt shingle roof is 17 years old, but not quite ready to be replaced. Koolau Tech was the only company that had the answer for our roof, Renuvenation, instead of replacement. None of the others recommended reroofing, but didn't have anything to recommend.
We were so fortunate to have found Koolau Toof Tech!!! Our roof is now ready to be installed. The rejuvenation has a 5 year warranty as well!!!
Thank you Kirt for providing a sustainable alternative treatment to extend our roofing shingles instead of spending a fortune to replace them or have it remain in our landfills indefinitely. I deeply appreciate your kindness in going above and beyond to help us and providing excellent communication, a free estimate with photos and repair suggestions, courteous customer service, post treatment and repair photos. I'm glad Kirt checked our roof and I highly recommend Koolau Roof Teck! Mahalo to Kirt and his father Mel.
I was able to Communicate with Kirt through emails and texts as I travel a lot. He rejuvenated 3 of my neighbors homes roofs and results were great. Kirt did my home a couple days ago after giving a free estimate with photos and suggestions, suck as sealing my air vents from Birds.
His estimate was impressive and he keep in communication on exactly what he and company can do. He sealed my roof from some loose stings, sealed nail holes and then put the rejuvenation on the roof. He was so thoughtful he even covered my neighbors suv in case of overspray
The most impressive thing about Kirt imo was that I was dealing with a truly nice and host guy who did what he said he would do and the constant communication and before and after photos are a keeper.
If you are looking for a good roofing company give Kirt a call. You wont be disappointed. I know I wasn't and neither were my neighbors
Jim
We are pleased and appreciative for Kirt's roof treatment. He was courteous, friendly and professional prior to and after the treatment. We were given a thorough explanation of the process and provided post-treatment photos!
Certainly we view the treatment as being performed well and we are comforted in that we have a five year warranty. This was definitely a value decision on our part. Thank you Kirt and Dad Mel.
Kelly D.Thank you Kirt I appreciate your professionalism! The treatment process was fast, and I have a piece of mine that for the next five years I have a warranty, and extended life on my roof!
Mahalo Kelly Boy DeLima

























