R-Value Table: Wine Cellar Construction Guide

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. If you need assistance understanding the charts, don't hesitate to contact us.

Materials

 

R-Value

 

Per Inch

 

Thickness

Insulation

       
Fiberglass Batt   3.15 - 4.30    
Fiberglass Blown (attic)   2.20 - 4.30    
Fiberglass Blown (wall)   3.70 - 4.30    
Rock Wool Batt   3.14 - 4.00    
Rock Wool Blown (attic)   3.10 - 4.00    
Rock Wool Blown (wall)   3.10 - 4.00    
Cellulose Blown (attic)   3.60 - 3.70    
Cellulose Blown (wall)   3.80 - 3.90    
Vermiculite   2.13    
Rigid Fiberglass   4.00    
Expanded Polystyrene (Beadboard)   4.00    
Extruded Polystyrene   5.00    
Polyurethane (formed in place)   6.25    
Polyurethane (foil-faced)   7.20    

Construction

       
Concrete Block 4"       0.80
Concrete Block 8"       1.11
Concrete Block 12"       1.28
Poured Concrete   0.08    
Brick 4" common       0.80
Brick 4" face       0.44
Soft Wood Lumber   1.25    
- 2" Nominal (1 1/2")       1.88
- 2x4 Nominal (3 1/2")       4.38
- 2x6 Nominal (5 1/2")       6.88
Cedar Logs & Lumber   1.33    

Sheathing

       
1/4" Plywood       0.31
3/8" Plywood       0.47
1/2" Plywood       0.63
5/8" Plywood       0.77
3/4" Plywood       0.94
Fiberboard   2.64    
Fiberglass   4.00    
Extruded Polystyrene   5.00    
Foil-Faced Polyisocyanurate   7.20    

Interior Finish

       
Gypsum Board (drywall 1/2")       0.45
Gypsum Board (drywall 5/8")       0.56
Paneling (3/8")       0.47

Glass

       
Single Pane       0.91
Single Pane with Storm       2.00
Double Pane        
- 3/16" air space       1.61
- 1/4" air space       1.69
- 1/2" air space       2.04
- 3/4" air space       2.38
- 1/2" with Low-E       3.13
Triple Pane        
- 1/4" air space       2.56
- 1/2" air space       3.23

Doors

       
Wood Hollow Core Flush (1 3/4")       2.17
Solid Core Flush (1 3/4")       3.03
Metal (2" with urethane)       15.00

Table Source: ColoradoEnergy.org