Climate‑controlled wine cellars
Holding a cellar at fifty-five degrees and sixty percent humidity inside a Las Vegas house whose exterior sees a hundred and ten asks a lot of the walls around it. A failure there is slow and stays hidden inside the wall, so the detailing has to be right before the drywall closes.
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01 The cellar, taken apart
A cold room
in a hot house.NXG builds wine storage from a cabinet set into a wall up to a walk-in room like this one. A walk-in holds fifty-five degrees and steady humidity while the outside walls of the house see a hundred and ten.
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02 Glass and door
Treat the door
as an exterior door.Insulated glazing, a gasketed door with a real seal, and a frame that keeps the cold from reaching the warm side. Build it like an interior door and it sweats.
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03 The envelope
The barrier goes
on the warm side.Interior finish, then framing with insulation sized for the temperature difference, then a continuous vapor barrier on the warm face with every penetration sealed. A light box cut in without sealing breaks the barrier, and the condensation stays hidden inside the wall.
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04 Cooling
Sized from
the heat load.NXG sizes the cooling from the envelope, the glass, the lighting, the door and how often you open it. Undersized equipment runs all day, still misses and can dry the air; oversized equipment short-cycles and never holds the humidity steady. The condensate needs a drain, and a technician needs to reach the unit.
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05 Racking
Bays for
what you keep.Licensed carpentry partners build the racking under NXG’s C‑3 license, in a wood that tolerates constant humidity, with bays sized for standard bottles, magnums and cases.
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06 Lit
Lit, and
still cold.Lighting adds to the heat load, so NXG uses low-heat LED and places it to show the labels without warming the nearest bottles.
Building science, in millwork.
From a wall cabinet to a walk-in room
NXG builds both ends of it. At the small end, a climate-controlled wine cabinet set into a wall or a run of millwork: it needs a circuit, the clearances and ventilation its manufacturer specifies, and cabinetry built around it by licensed carpentry partners, under NXG’s C‑3 license. At the large end, a walk-in room like the one modeled above, where the envelope, the cooling and the door hold the wine at temperature.
Between the two sit glass-fronted wine walls and converted closets. The walk-in carries the most building science, so the sections below cover it.
The envelope
A cellar wall has cold, humid air on one side and a warm house on the other. House air that reaches the cold side of the insulation condenses there, and in the valley’s dry months the cellar loses its own humidity through the same gaps. You need a continuous vapor barrier on the warm side, insulation sized for the temperature difference rather than to code minimum, and every penetration sealed.
One light box cut in without sealing breaks the barrier. Get it wrong and you do not feel it: you get condensation inside the wall, and the damage is done well before anyone opens it up.
Sizing the cooling
NXG sizes cellar cooling from the actual heat load: envelope, glazing, lighting, door, how often you open it, how much thermal mass sits inside.
Undersized equipment runs constantly, still misses, and can dry the air enough to dry the corks. Oversized equipment cools too fast and short-cycles, so it never runs long enough to hold the humidity steady. Condensate needs somewhere to go, and the unit needs service access that does not involve dismantling your racking.
Glass and doors
Glass walls are why many cellars get built and the hardest part to detail: insulated glazing, a gasketed door with a real seal, and a frame that does not turn into a thermal bridge.
Treat the cellar door as an exterior door. Specified as an interior door, it sweats.
Racking
Racking is carpentry, in species that tolerate sustained humidity, detailed for what you actually store. Large formats, magnums and case storage each want different bays.
A cellar below grade anywhere in the valley can mean digging through caliche, in a depth and hardness that vary by lot. NXG quotes that from the start.
- Envelope
- Continuous warm-side vapor barrier, sealed penetrations
- Cooling
- Sized from a heat-load calculation
- Glazing
- Insulated glass, gasketed door, no thermal bridge at the frame
- Racking
- Humidity-stable species, bays detailed for large formats
Related
Finish carpentry
Custom build construction
Whole-home remodel
Talk to us
Tell us what you are building. We will tell you what it involves and where the money usually goes.
Or call (702) 913‑7007 · info@nxgbuilds.com
What owners ask
about the cellar.
Do you build smaller wine storage too?
Yes. A climate-controlled wine cabinet set into a wall or built into millwork is the small end of the same work: a circuit, the clearances and ventilation its manufacturer specifies, and cabinetry built around it by licensed carpentry partners. A walk-in room is the large end.
Can a cellar go anywhere in the house?
Almost anywhere, and where it goes changes the envelope. Holding a cellar at fifty-five degrees and sixty percent humidity inside a Las Vegas house whose exterior sees a hundred and ten asks a lot of the walls around it, so a room against an exterior wall and a room below grade are different problems.
What fails in a cellar?
Usually the envelope, out of sight. House air that gets through a gap in the vapor barrier, such as a light box cut in without sealing, condenses on the cold side of the insulation. The wall gets wet inside while the room looks fine.
Why not install a larger cooling unit to be safe?
An oversized unit cools too fast and short-cycles, so it never runs long enough to hold the humidity steady. An undersized unit runs constantly, still misses, and can dry the air. NXG sizes it from the actual heat load: envelope, glazing, lighting, door, how often you open it, and how much thermal mass sits inside.
Does a glass-walled cellar work in this climate?
Yes, detailed properly. Insulated glazing, a gasketed door with a real seal, and a frame that does not become a thermal bridge. Treat the cellar door as an exterior door. Specified as an interior door, it sweats.
Tell us what
you’re building.
Send the details below or call. We reply within one business day.
- Phone
- (702) 913‑7007
- info@nxgbuilds.com
- Office
- 3277 E Warm Springs Rd, Ste 200
Las Vegas, NV 89120 - Hours
- Monday–Friday, 8:00am–5:00pm
Saturday, 10:00am–3:00pm - Licenses
- NV B‑2 #0091645
NV C‑17 #0092664
NV C‑3 #0092662
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