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Custom Wine Cellar Door Tips

All You Need to Know About Insulated Glass
Published on February 13, 2011

In this article, I'll discuss all you need to know about Insulated Glass plus a few practical tips. Insulated glass is composed of at least 2 panes of glass attached together and sealed around the edges, leaving a layer of space in between. This space is the most important key in preventing condensation inside dual and triple pane glass windows and doors.

Using insulated glass on your wine cellar door is an excellent choice. Why? I'll explain by discussing the different parts of an Insulated Glass unit. This way I hope to make the whole thing much clearer.

Glass Panes

Tempered glass is normally used because it is several times stronger than regular glass. It goes through intense heat and chemical treatments to give it its core strength and when it's accidentally broken, it shatters into small harmless fragments instead of sharp shards. Most insulated glass is Low-E coated because they're primarily used on exterior doors and windows where they are exposed to sunlight and winter. It works by reflecting heat back to its source.

Wine cellar doors normally don't need the benefits of Low-E coating but if your wine cellar is in a place where it can be exposed to sunlight, which is the primary source of Ultraviolet Light, you might want to consider Low-E coating. Low-E coating helps in reflecting Ultraviolet Light that can cause unwanted chemical compounds to develop in your wine. In fact, try to avoid any kind of lighting in your custom wine cellar but if you have to, make sure your lighting fixtures are UV free.


There are 3 ways to fill the space. First, you can use dry air, which is basically air that is free from moisture. Second, is to fill it up with what we call thermal performance gas, and there are three common types: Argon, Krypton and Xenon and all have lower heat transmitting properties than air, Argon being the most popular since it's the most affordable. These gasses are clear, odorless, non-toxic and chemically stable so they are safe to use. The third way is to create vacuum in between those panes. Technically, it's very hard to achieve absolute vacuum therefore it tends to be expensive. You can't go wrong with Argon-filled insulated glass simply because it's practicality.


Sealants have very low moisture vapor transmission rates so are very effective in preventing condensation. They also protect the gas-filled space from glazing and cleaning agents. Butyl is the most commonly used. Some manufactures apply a secondary sealant, which is usually Silicone, to act as structural adhesive for the panes.


The spacer is what's used to separate the glass panes and keep them in place. Historically, manufacturers have been using metallic materials as spacers but this practice undermines the ability of insulated glass to reduce the flow of heat. Look for manufacturers who use spacer materials that do not conduct heat, like structural foam or fiberglass. Additionally, some manufacturers have integrated the processes of adding desiccants and spacers into one simplified step.


You know how silica gels work right? Silica is a type of desiccant that aids in removing trapped moisture within the gas-filled space by absorbing water and hydrocarbons within its vicinity. It's important that the desiccant used would not absorb or cause chemical reaction with the gas filling.

What are its Advantages and Disadvantages?

Insulated Glass is commonly used on exterior doors and windows for its soundproofing and insulating qualities. Insulating is really important but soundproofing? Sure. Sound and vibrations pretty much work the same way. They're both made up of sequential waves and any serious collector of wine knows any form of vibration is a threat because it stirs up the sediments inside the bottle. Vibrations also speed up the chemical reactions inside the wine bottle but in a bad way.

Another advantage that multi-paned glass has over a single pane of glass is you can utilize those in-between spaces by adding more decoration to your door. You can insert mural-like mosaic art in between if you choose to do and you can use any type of material just as long as the gasses won't chemically react to it. For example, you can have your initials depicted in chrome on your contemporary wine cellar door!

A major disadvantage with multi-paned glass of course is you have to be conscious not to break the seal, this in reality though is pretty hard to do. However, if those gasses do escape and air gets in, condensation can form inside then there's no other alternative but to entirely replace the glass.

Coastal Custom Wine Cellars specializes in creating perfectly designed wine cellars, wine racks, wine cellar doors and wine cellar flooring. Come visit our website now for additional information and see for yourself how beautiful your wine cellar can be.

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Top 10 Varietals for April, 2019

Pinot Noir is the most popular wine varietal chosen by our visitors this month.

This varies by season so if you're looking for something tasty to drink this spring, Pinot Noir is a great choice. The others are shown below:

1. Pinot Noir
2. Red Bordeaux Blend
3. Syrah
4. Nebbiolo
5. Cabernet Sauvignon
6. Merlot
7. Chardonnay
8. Red Blend
9. Sangiovese
10. Riesling

Top 10 Producers for April, 2019

Wines from Sapphire Hill were selected by our visitors the most this month, making them the most popular choice for consumers.

If you're looking for a wine suggestion, Sapphire Hill might be a great place to start. The others are shown below.

1. Sapphire Hill
2. Phelan Vineyard
3. Stephen Test
4. Ferdinand Pieroth
5. Adelsheim
6. Silver Oak
7. Louis Jadot
8. Viansa
9. Andrew Will
10. Bruno Giacosa