Afternoon heat in a west-facing Kihei condo

Why the west side runs hot

Kihei is on Maui’s dry, sunny south shore, and its shoreline faces west, toward Kahoolawe and Lanai across the water. That’s the view people buy, and it means the lanai sliders of an ocean-view unit face the afternoon sun. Around midday the lanai roof shades the glass. By mid-afternoon the sun is low enough to come in under it, straight onto the floor and the furniture, and it keeps coming until sunset. The water and the pale concrete below add reflected light and glare.

The angle shifts through the year. In summer the sun sets north of west, and in winter south of west. A unit facing due west takes afternoon sun all year; one facing northwest or southwest catches it hardest for part of the year and less the rest.

Neighbors in one building don’t get the same sun, either. A higher floor, the next building, a tree or a deeper lanai above all change how much of it reaches the glass.

Start with the glass the sun hits

Before choosing a film, spend a clear afternoon in the unit and note which panes take direct sun, from what time, and where it lands. A few photos through the afternoon make this easy to share. In a typical west-facing unit the list is short:

• the lanai sliders, including any fixed panel beside them
• a lanai door from a bedroom
• a large window on the same wall

Windows on the north and south walls may get sun for only part of the year. Glass under a deep overhang, or shaded by the next building, may get almost none. Filming the sun-struck panes first does most of the work with a fraction of the glass. If you add other windows later, use the same film so the unit matches inside and out.

Keep the view

In a view unit, the film choice is mostly a choice about the view.

Light, low-reflective solar film cuts heat and glare and looks close to clear from inside. You still see the water, the color of the sunset and the lights along the coast at night. For a view unit, this is where to start.

Darker film cuts more glare but dims the room and the view all day, including the hour around sunset that is the reason you’re on the lanai.

Mirror-style reflective film bounces the most sunlight away, but it reflects. From outside by day the glass looks like a mirror. After dark, with the lights on inside, the reflection flips to your side, and you see the room instead of the coastline. Many associations rule it out for that look alone.

In the last half hour, when the sun sits right in the window, no film you’d want on a view window takes away all the glare. A shade for that stretch still helps.

Ask the association first

Film on condo glass is visible from outside, so many associations control it. Rules often cover color and reflectivity, and some buildings name one approved film so every unit matches. Ask management for the window rules and any request form, and get approval in writing before you book. The guide to what condo boards ask for lists the usual paperwork: the film’s data sheet, a sample or mock-up, the list of windows and the installation plan.

Buildings also set rules for contractors, such as check-in, parking, elevator use and work hours. Pass those on when you request the visit.

Check the glass

Lanai sliders are big panes, and in a west-facing unit part of each pane is often shaded by the lanai roof or the railing while the rest sits in full sun. Some buildings have dual-pane or low-E glass. All of that affects which films suit the glass, because a film that absorbs a lot of heat can stress large, partly shaded or insulated panes. The installer checks the glass before recommending a film, and can window film crack glass? explains why.

If the unit is a rental

The install needs the unit empty, so book it on a gap between guest stays. The film then takes a few days to dry, and a light haze or small water pockets at first are normal. Ask housekeeping to leave the filmed side of the glass alone until it has cured. The condo and vacation rental page covers owners who live off-island and managers looking after several units.

Getting it quoted

Kihei is about 25 minutes from the shop in Wailuku, and condo film is measured and installed on site. Each unit is quoted in writing after a measure, with no online checkout. Send the address and unit number, which way the lanai faces, photos of the glass in the afternoon, the association’s window rules and your open dates through the quote form, or call (808) 707-7064. The Kihei and Wailea page covers the rest of the south shore.