Front Doors in the Florida Sun: Materials and Finishes

A south or west-facing entry door in Central Florida takes a beating. How wood, fiberglass and steel doors hold up, and how to keep the finish alive.

The front door is the one piece of the house every visitor touches, and in Polk County it is also one of the most exposed. A door facing south or west with no porch roof gets direct sun for hours every afternoon, most of the year. That exposure decides how long the finish lasts, whether the door warps, and how often you will be back on a ladder with a brush. Here is how the common door materials handle it.

Wood

Nothing looks like a real wood door, and nothing needs more attention. Sun breaks down the clear finish first, then the wood underneath grays, checks and takes on water. A stained wood door on an unprotected exposure in Central Florida can need recoating every year or two. Paint holds up better than stain because it blocks UV completely, but a painted wood door still expands and contracts with humidity, which is why it sticks in August and rattles in January.

If you love a wood door, a deep porch roof or a storm-rated overhang changes everything. Shaded, a properly finished wood door can go years between coats.

Fiberglass

Fiberglass is the practical choice for most Florida entries. It does not rot, warp or dent, it insulates well and a good wood-grain fiberglass door stained properly fools most people. The finish still fades in direct sun, so a fiberglass door needs a UV-resistant topcoat refreshed every few years on a hard exposure, but the door itself is not at risk while you wait. Smooth fiberglass takes paint beautifully and is the easiest door to keep looking new.

Steel

Steel doors are the least expensive and the most secure, but they have two weaknesses here. They get hot enough to burn a hand in afternoon sun, which cooks the paint and can warp the panel. And any chip in the finish lets humidity reach the steel, and rust follows. On a shaded north-facing entry a steel door is fine. On an exposed west wall it is the wrong material.

Glass, sidelights and hardware

Glass in a door adds light to a dark foyer but it also adds a place for heat to come through and a weak point in a storm. Look for insulated, low-E glass at minimum, and impact-rated glass if the entry is not protected by shutters. Sidelights and transoms are the same story. Hardware takes the same sun as the door, and cheap plated handlesets pit and peel within a few years here. Solid brass or stainless hardware with a lifetime finish costs more up front and looks the same a decade later.

Color matters more than you think

Dark colors absorb heat. A black or navy door on a sunny exposure can reach temperatures that void the manufacturer's warranty on many fiberglass and steel doors, and the heat accelerates fading, chalking and warping. If your heart is set on a dark door, check the manufacturer's guidance on exposure and use a paint formulated for it. Our post on how Florida heat affects paint explains the chemistry.

Keeping the finish alive

• Wash the door a few times a year. Pollen, salt and grime hold moisture against the finish.
• Recoat before it fails. Once a clear finish has cracked and the wood has grayed, the door needs a full strip and refinish, which costs many times what a maintenance coat does.
• Check the bottom edge and the sweep. Water wicks up into the door from a bad threshold seal, and that is where most rot starts. Our post on door thresholds and water intrusion covers it.
• Keep the weatherstripping soft. Hardened, cracked weatherstripping lets in hot air and driven rain.

Refinish or replace

A sound wood or fiberglass door with a tired finish can be stripped, sanded and refinished to look new, which is a good value if the door itself is quality. Replace when the door is delaminating, the bottom rail is rotted, the frame is soft, or when the existing door is not impact-rated and you want storm protection at the entry. New entry doors in Central Florida range widely in price depending on material, glass and impact rating, and installation includes the frame, threshold and hardware. A free estimate gives an exact number.

Inventive Home Improvement installs and refinishes entry doors as part of our door and window services and exterior painting in Lakeland, Plant City and across Polk County. Call (863) 633-5499.

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