Wine storage experts strongly recommend that cellars should have a minimum of r 13 insulation.
Wine cellar insulation r value.
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If the walls don t reach an r value of at least 20 and the floor and ceiling don t reach at least 30 there will be cold air lost to the rest of the home.
However softer woods such as pine might have r values twice as high due to their greater number of air filled pores.
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.
When applying traditional fiberglass batting make sure to orient the paper or foil barrier toward the warm side of the wine cellar wall.
In this case you might consider selecting a cooling unit with a greater btu output to offset the diminished r value.
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In a 2x6 wall fiberglass will provide you with an r 19 insulation value.
R value or the thermal resistance value of a material is a critical rating.
Another example of how the presence of dead air spaces affect a product s r value can be seen with wood.
Wine cellar construction guide.
Hard woods like oak typically have an insulating value of r 1 per inch of thickness.
Generally the next size up cooling unit will be adequate but we recommend you consult a professional to be sure.
This value can be adequately provided by fiberglass batts.
It also stops water vapour from escaping and damaging areas adjacent to the wine cellar.
In a 2x4 wall cavity using fiberglass will provide you with an r 13 insulation value.
This is why styrofoam is the wine cellar insulation of choice when planning to build a wine cellar in your home.
R value indicates the ability of the insulation to restrict heat flow a higher r value indicates better insulation.
After the vapor barrier has been installed you will need to put insulation in the stud and joist cavities.
If you need assistance understanding the charts don t hesitate to contact us.
In the case of glass enclosed wine cellars note that glass is a poor insulator.
The closed cell structure is very strong.
With an r value of about 7 per inch this takes your cellar comfortably above r 30 on average.
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.
The most common insulation used is fiberglass batts.
Styrofoam has a closed cell structure and therefore will not absorb any moisture maintaining its high r values.
