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Salt, sun and wind load narrow the field quickly. Here is how the common materials behave within a few miles of the water, and what to specify beyond the door itself.
Coastal steel: the practical default
Insulated sandwich-construction steel with a coastal-grade coating is what we fit most on the coast. It takes wind rating well, holds finish acceptably with rinsing, and offers the best combination of price, insulation and impact options. Specify a heavier gauge and a marine-grade finish, and expect to rinse it — salt film left on any coated steel accelerates corrosion at every edge and fastener.
Aluminium and full-view glass
Aluminium frames resist salt corrosion better than steel and suit contemporary elevations, particularly with impact-rated glazing. Trade-offs: lower insulation value unless specified with insulated glass, higher cost, and more careful hardware specification because the frames are lighter. For beachfront properties where finish longevity matters more than budget, this is often the right answer.
Composite and wood-look
Fibreglass and composite overlay doors deliver a wood appearance without the maintenance load. They handle humidity far better than real timber. Check the impact and pressure ratings carefully: some architectural overlay products are rated well below their plain-panel equivalents.
Real wood: honest advice
A genuine timber door in coastal Florida is a maintenance commitment — refinishing on a short cycle, swelling in humidity, and a weight penalty that drives up spring and opener specification. Beautiful, and we will fit one properly if you want it, but go in knowing the ownership cost.
The hardware matters as much as the door
- Galvanised or powder-coated springs — high-cycle sets on the coast
- Stainless or hot-dip galvanised fasteners throughout
- Sealed-bearing nylon rollers rather than steel
- Marine-grade bottom seal and jamb weatherstripping
- Reinforcing struts as the wind-load approval specifies
- An opener with battery backup, mounted clear of standing-water risk
We have replaced plenty of good coastal doors whose hardware failed years before the panels did. Specifying the door and skimping on the hardware is the classic false economy here.
The short version: Coastal-coated insulated steel for most homes, aluminium with impact glazing where finish longevity and looks lead, composite for a wood look without the upkeep. Whatever the door, specify galvanised or stainless hardware and high-cycle springs.
