Wine storage experts strongly recommend that cellars should have a minimum of r 13 insulation.
Wine cellar insulation r value.
If you decide to use this material for your custom cellar make sure that a 6 mil plastic vapor barrier is applied to the warm side of the walls.
This value can be adequately provided by fiberglass batts.
In this case you might consider selecting a cooling unit with a greater btu output to offset the diminished r value.
When building a wine cellar use the following table to assist in calculating the r value for various construction materials that you may use in your wine cellar.
Generally the next size up cooling unit will be adequate but we recommend you consult a professional to be sure.
The most common insulation used is fiberglass batts.
Another example of how the presence of dead air spaces affect a product s r value can be seen with wood.
However softer woods such as pine might have r values twice as high due to their greater number of air filled pores.
It also stops water vapour from escaping and damaging areas adjacent to the wine cellar.
This is why styrofoam is the wine cellar insulation of choice when planning to build a wine cellar in your home.
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With an r value of about 7 per inch this takes your cellar comfortably above r 30 on average.
R value indicates the ability of the insulation to restrict heat flow a higher r value indicates better insulation.
Fundamentally insulation can be the most limiting factor in the function of your wine cellar.
Wine cellar construction guide.
The closed cell structure is very strong.
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In a 2x4 wall cavity using fiberglass will provide you with an r 13 insulation value.
Increasing shear and racking strength by 300.
Styrofoam has a closed cell structure and therefore will not absorb any moisture maintaining its high r values.
When applying traditional fiberglass batting make sure to orient the paper or foil barrier toward the warm side of the wine cellar wall.
In a 2x6 wall fiberglass will provide you with an r 19 insulation value.
Closed cell foam is a code approved vapor barrier with a permeability rating of under 45 ng as well as a code approved air barrier and thermal insulation.
R value or the thermal resistance value of a material is a critical rating.
In the case of glass enclosed wine cellars note that glass is a poor insulator.
Hard woods like oak typically have an insulating value of r 1 per inch of thickness.
