Materials and finishes for a coastal kitchen

What the climate is

The numbers are worth stating, because the popular picture of Newport Beach weather is not quite the working one. NOAA 1991 to 2020 Climate Normals for the nearest first-order station, John Wayne Airport, give an annual mean temperature of 64.0 degrees, an annual mean maximum of 72.0 and an annual mean minimum of 55.9. The warmest month averages 72.6 degrees and the coolest 56.1. Annual precipitation normals total 13.33 inches, and it is heavily seasonal: about 2.9 inches in each of January and February against 0.04 inches in July and 0.03 in August.

So: mild all year, almost no summer rain, and no freezing to speak of. What that description leaves out is the marine layer, which brings persistent morning humidity through the summer months on the coastal strip while the airport a few miles inland burns off earlier. Salt-laden air plus sustained humidity is the combination that matters, and it is strongest on the peninsula, the island, and the bluff-top streets of Corona del Mar.

Metal is where it shows

Chloride in the air attacks metal, and it finds the weakest specification first. In a kitchen that means handles, knobs, hinges, faucet finishes, appliance trim and fixings, in roughly that order.

• Plated finishes over a base metal fail first. A thin decorative plating over zinc or pot metal pits and lifts, and once the plating is breached the corrosion runs underneath it. This is the single most common coastal disappointment in a kitchen, and it is a purchasing decision rather than a maintenance failure.
• Solid brass and solid stainless age instead of failing. They change appearance over time, which is a different proposition from degrading. Unlacquered brass in particular is designed to patinate, so a kitchen specified in it will not look the way it did on day one, and that is the intent rather than a fault.
• Stainless is not one thing. Grades intended for marine and coastal exposure resist chloride pitting considerably better than the commodity grades used in inexpensive fittings. Where a fitting sits near an open window or a door to the water, it is worth asking a supplier what grade it is rather than assuming that "stainless" answers the question.
• Fixings matter more than they look like they should. A beautiful solid brass handle held on with a plain steel screw will still stain the door around the screw head within a couple of years.

Sheen, and the salt film

Coastal air deposits a fine haze on every horizontal and vertical surface in a house near the water. It wipes off easily and it comes back. The specification decision that follows is about sheen rather than durability.

High-gloss lacquered cabinetry and polished stone show that film every morning and read as dirty when they are simply coastal. Satin and matte finishes, and honed rather than polished stone, hide it almost completely. Nobody regrets a satin kitchen near the water; a good number of people regret a gloss one, and the regret is daily rather than dramatic.

Cabinet finishes near the water

The cabinetry itself is less exposed than the hardware, because it lives inside a conditioned room. Still, two choices are worth making deliberately.

A sprayed catalysed or conversion varnish finish applied in a shop is harder and more moisture-resistant than paint applied on site, and it is the reason custom doors are finished away from the house. And medium density fibreboard for painted doors, rather than solid wood, avoids the seasonal movement that opens paint lines at the joints. Neither is a coastal-specific rule, but both matter more in a house with the doors open to the ocean air for eight months of the year.

Glass, light and colour

The other coastal factor is light. West-facing kitchens on this coast take strong direct afternoon sun, which does two things worth designing around.

The resin binder in engineered quartz is not indefinitely stable under ultraviolet light, and some products can shift in colour under prolonged direct exposure. Where a counter runs into a sun-drenched window bay or out to an outdoor kitchen, porcelain or sintered slab, which is stable under UV, is the safer specification. The countertop guide covers the trade-offs.

Strong light also flattens colour. A grey that reads warm in a showroom under tungsten can read cold and flat in a room with west light off the water, and a white that looks crisp inland can look blue here. Samples belong in the actual room at the actual time of day, which sounds obvious and is skipped constantly.

What does not need coastal treatment

It is worth saying plainly, because coastal specification can turn into an excuse for spending. Cabinet boxes inside a conditioned kitchen do not need marine-grade anything. Countertop stone is unaffected by salt air. Tile and grout are unaffected. Flooring is unaffected except where sand tracked in from the beach acts as an abrasive, which is a doormat problem rather than a material one.

The money that genuinely belongs in coastal specification is narrow: solid rather than plated hardware, an appropriate stainless grade for anything near an opening, decent fixings, satin rather than gloss, and UV-stable stone where the sun reaches it. That is a few hundred to a couple of thousand dollars on a kitchen, and it is the difference between hardware that looks right in year five and hardware that does not.

Where this applies most

Hardest exposure: oceanfront and bayfront lots on the Balboa Peninsula, Balboa Island, and the bluff-top streets of Corona del Mar and Laguna Beach. Moderate: most of Newport Beach, including Eastbluff above the Back Bay and Huntington Beach, where onshore wind carries salt across a flat city with little to break it. Negligible: Tustin, Irvine and Fountain Valley, where finishes can be chosen on appearance and durability alone.