How to Stylishly Bring More Sunlight Into Your Home
Design pros are turning to a chic alternative to the roof-puncturing skylight: the interior window. Here’s what you need to know.
Design pros are turning to a chic alternative to the roof-puncturing skylight: the interior window. Here’s what you need to know.
THE OPEN floor plan lost considerable appeal once the din of WFH video calls began echoing through it. As Americans have grown more interested in walls, but no less interested in airiness, a new-old solution has emerged: interior windows. These apertures let light jump from room to room while creating a soothing sense of separation.
When renovating her historic 1902 home in Grand Rapids, Mich., interior designer Jean Stoffer found 100-year-old storm windows there. As part of a new wall pierced by a wide doorway, they proved a handy way to introduce a distinct but not too darkening division between her grand living room and kitchen-seating area. She then painted the windows’ wood sashes black, in keeping with the home’s exterior windows. “The style of an interior window should be the same as or complementary to the home’s exterior windows,” Ms. Stoffer advised.
Other designers stress the importance of visually quiet portals. Max Worrell, an architect in Brooklyn, recommends windows with slight frames that “go away as much as possible.” In a South Carolina home, interior designer Barbara Westbrook also wanted an interior window to disappear. Atlanta architecture firm Historical Concepts installed nearly floor-to-ceiling glazing between a living room and a reading room (which has windows overlooking the outdoors), making the reading room “look like a porch,” she said. She matched the trim work around the interior windows to the colour of the reading room’s walls so that “your eye does not stop at the window but looks through the window.”
Vintage windows have advantages. Designers in search of handsome frames have more leeway when they needn’t factor in heat retention and element resistance. Retrouvius, a salvage company and design studio in London, often repurposes exterior windows no longer up to code, to add “an instant historical reference” in older buildings, said co-founder Adam Hills.
Wedging even a small transom window above a door frame can brighten darker spaces like laundry and powder rooms. Assuming the doorway is a standard 80 inches tall, you need a ceiling height of at least 9.5 feet, said Stephanie Sabbe of Sabbe Interior Design, in Nashville, Tenn. Any lower, and your transom will look squished.
Costs for an interior window vary greatly. On one end of the spectrum, explained Ms. Stoffer, is a simple wooden-sash window with minimal millwork set into a non-load-bearing partition wall that’s, say, 6 feet wide in a room with an 8-foot ceiling. A skilled carpenter can turn such a project around for roughly $1,500. Ditto for a standard transom.
Meanwhile, if you’re planning to install a custom steel window with complicated moldings into a bigger existing wall with mechanicals in it, you’ll need an engineer and other tradespeople. Cost: in the tens of thousands of dollars.
If all this glass seems like an overshare waiting to happen, know that light and modesty can coexist. To brighten a windowless bathroom in a Brooklyn home, Mr. Worrell cut an aperture in the wall between bed and bath, then filled it with a translucent but not transparent glass. “In the bath, you get daylight from the bedroom’s windows, while in the bedroom, you see only a shadowy figure,” he explained. The result is less edgy than it sounds, he said. “There’s a bit of play with voyeurism, but it’s discreet.”
The pandemic-fuelled love affair with casual footwear is fading, with Bank of America warning the downturn shows no sign of easing.
The megamansion was built for Tony Pritzker, heir to the Hyatt Hotel fortune and brother of Illinois Gov. JB Pritzker.
With interest booming, wellness experts and pool builders have seen more homeowners hoping to take cold therapy immersion into their own backyards.
Cold plunges have gone from fringe curiosity to full-blown cultural phenomenon, the wellness world’s equivalent of a headline-grabbing breakout star.
Adherents slip into icy water on a daily basis, chasing an electric jolt of clarity that feels like a flip has been switched inside your brain.
Dedicated cold plunge practices are everywhere from upscale fitness studios and pro sports locker rooms to renowned wellness destinations such as Mountain Trek Health Reset Retreat in British Columbia.
Considering the ever-expanding assortment of companies flooding the market with cold plunge tubs and other custom devices dedicated to achieving icy bliss—with costs potentially reaching into the tens of thousands—some homeowners are tempted to use their swimming pools as an alternative.
“We’re absolutely seeing more homeowners use their pools as year-round cold plunges, especially in colder climates,” said Nick McNaught, CEO and co-founder of Toronto-based Stay Unbounded, which offers cold exposure workshops, retreats and certifications.
“The motivation is often simplicity and cost. If the water is already cold, people see value in keeping the pool open longer or winterizing it differently to support cold exposure.”
Suzanne Vaughan, president of Massachusetts-based pool builder SwimEx, points out the inherent convenience that comes with taking a frosty dip out back.
“From what homeowners tell us, the appeal of a cold plunge at home is less about chasing extremes and more about having a simple ritual that’s always available,” she said.
“It’s quick, accessible and easy to build into a daily routine.”
Among new clients Vaughan works with, year-round cold plunge use is usually planned from the start rather than as an afterthought.
“More are choosing indoor pools or small attached structures because that makes temperature control, equipment protection and day-to-day use much easier in colder climates,” she said.

If someone is thinking about using an existing home pool as a cold plunge, the main questions are likely to involve practicality and protection.
“Larger volumes of water take more energy and time to keep at colder temperatures, and you need a plan to protect plumbing, finishes and equipment from freeze–thaw cycles,” she added.
“Whatever the design, you want a system that’s built for the temperature range you have in mind, and a pool professional who can help you winterize safely.”
One such professional is Hunter Gary, a certified master pool builder and owner of H2 Outdoor Living in Tennessee.
“Most everyone has a ‘number’ in degrees when it comes to cold plunging. When a client asks our company to design a cold plunge for them, I ask ‘what’s your number?’” Gary said.
“A smaller body of water or cold plunge vessel may be much easier for maintaining a balanced temperature…but if using a pool gets you excited about a more serious approach to inviting this wellness experience in your life, then go for it.”
Amy McDonald, owner and CEO of Under a Tree, a wellness consultancy, said transforming a pool into a plunge might not be worth time and investment
“It is almost impossible to retrofit a standard swimming pool into a cold plunge,” she said.
“The energy and money to do it properly is greater compared to just creating a complimentary contrast circuit.”
A proper setup needs to be exceptionally cold, she noted, so depending on where the pool is located it might not get chilly enough to provide optimal health benefits.
“That could work in northern areas of the U.S., but it takes a lot for a pool to generate and keep that kind of cold, not even considering if the pool ices over,” she said.
McNaught echoed those concerns, citing how home pools aren’t designed specifically for cold plunging, so temperature consistency, cleanliness, ease of access and safety become important factors.
“Dedicated cold plunge setups offer more control, smaller volumes and lower ongoing maintenance,” he said.
“For many people, a pool works as an entry point. Over time, those who commit to the practice transition to a dedicated setup because it better supports frequency, comfort and long-term use.”
Beyond geography and climate, industry experts pointed out other challenges homeowners are likely to face.
“Pools are saturated with chlorine and other chemicals that directly absorb into the bloodstream. The advantage of many cold plunges is that no chemicals are required for residential use,” said David Haddad, as the co-founder of Oregon-based BlueCube Wellness.
“Constant ozonation and filtration is enough to kill organic compounds without exposure to sanitizing chemicals.”
Most cold-plunge systems are monitored to stay between 50-60 degrees Fahrenheit—with experienced plungers often preferring lower temperatures.
While “the ultimate experience might be a glacial lake in Finland, unfortunately that’s a bit out of reach for most of us,” said Andreas Stelluti, co-founder at Texas-based Colderatti, whose vessels feature the world’s first chemical-free cold plunge technology, powered by a triple filtration system that removes 99% of impurities to provide a system with drinking-quality water.
“Having a cold plunge at home brings that experience to your backyard, making it very easy and accessible, so you have the ability to make it part of your lifestyle,” he added.
Stelluti noted that as spring arrives and clients’ home pools start to warm up again, they begin to miss the cool water.
“Many say ‘I really need this to be part of my lifestyle year-round’ and that desire for consistent, accessible cold immersion is what motivates them to invest in a dedicated cold plunge setup,” he explained.
“Unfortunately, you can’t use your pool as a year-round cold plunge during the summer. Especially not here in Texas.”
Here’s how they are looking at artificial intelligence, interest rates and economic pressures.
From Tokyo backstreets to quiet coastal towns and off-grid cabins, top executives reveal where they holiday and why stepping away makes the grind worthwhile.