Mark McKinstry, co-owner of Diamond Head Windows & Doors, shared the reason for the rapid expansion of the company that has been taking place as of late.

“Simply, I would say word of mouth. We have a quality product that is professionally installed with the best warranty on the island. When we began installing windows in Hawaii, we realized that we needed products that specifically addressed the problems that the climate in Hawaii present.


“Specifically, hardware and glass units that would not deteriorate as many do that are manufactured and sold in Hawaii. We use stainless steel hardware throughout.

“People in Hawaii want the maximum ventilation that they can get, without the drawbacks of jalousie windows. We have come up with windows that provide ventilation, security and prevention from wind driven rain entering the home.

“We also have specially built screens that hold up to the salt and wind and can be easily removed for cleaning from inside the home. In addition, we offer a lifetime screen warranty and installation warranty and have the best overall warranty in Hawaii.


“Service/installation. We don’t use sub-contractors. That gives us better control on quality and training and allows us to give a lifetime installation warranty should any door or window leak. If you do encounter a problem, there is no run-around with the manufacturer. Call us, we fix the problem and at no cost to you as long as you live in your home.”

Then, he also explained why windows and doors so expensive in Hawaii.

“Like all products coming to Hawaii, we have substantial shipping costs as well as business costs from caulking to gasoline. Part of our success is eliminating overhead, middlemen and unnecessary costs. We purchase direct from the manufacturers and pack our own containers in the mainland. With 32 years experience in window replacement, we know how to deliver top quality brands efficiently at below market prices.


“On the flip side, installing a quality window in Hawaii has a high return on investment with the appreciation of homes here. An Amerimax window with a double lifetime warranty on all aspects of the window, screens and hardware is a sound investment that pays dividends as well as adding comfort, safety, security and overall appearance of your home.”

Find out for yourself what makes Diamond Head Windows unique. Set up a free in-home estimate and consultation. Call 419-7500 or on weekends/evenings call 799-8979. Contractor license is C5059. Visit

CONTACT 419-7500 • 799-8979 (weekends)