Hawaii's Best Custom Windows and Doors Built for Oahu's Hurricanes and Salt Air
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At Landmark Building Supply, we design and supply custom windows and doors for residential and commercial projects across Oahu, Maui, Big Island, and Kauai. Every window and door we offer is engineered for Hawaii's climate : energy-efficient, rust-free, and built to withstand humidity, salt air, and hurricane-force winds up to current Hawaii Building Code wind-zone requirements. From casement and awning windows to French doors and custom sliding glass doors, we carry every major style, fabricated to your exact opening.
Sliding windows and doors
smooth operation for lanai and view openings
Picture windows
fixed, fully sealed, unobstructed views
Casement windows
crank-out ventilation, tight hurricane-rated seal
Awning windows
rain-friendly airflow, great for trade-wind breezes
Hurricane-Resistant Windows
For homeowners and businesses that want extra protection, we also offer hurricane-resistant window options built to stand up to Hawaii's storm season. These windows are constructed with reinforced glass and frames designed to resist high winds and windborne debris, giving you added peace of mind without sacrificing the look or performance of your custom window package. Ask our team which hurricane-resistant options fit your project and budget.
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905 UMI STREET
FAQ
Do you supply hurricane-rated windows for Hawaii's building code?
Yes — our windows and doors are engineered to meet current Hawaii wind-zone and wind-borne debris requirements for both residential and commercial projects.
Do you install windows on the neighbor islands?
e ship windows and doors throughout Oʻahu, Maui, Hawaiʻi Island, and Kauaʻi, and provide professional installation for the products we sell.
What window styles do you offer?
Casement, awning, French, sliding, picture, single-hung, and double-hung windows, plus custom sliding glass doors — all custom-fabricated to your opening.
Do you work on commercial projects, or just homes?
Both. We supply and support residential replacement projects as well as commercial storefront, condo, and multi-family glazing.
Is the estimate really free?
Yes — we schedule a no-cost measurement visit before you commit to anything.