Specifications
- 3 - 
Cellar Construction 
This is only a guide and shall be considered as minimum requirements. 
All  interior  walls  and  floors  shall  have  a  vapor  barrier  and  a  minimum  of  R13 
insulation. All exterior walls and ceiling shall have a vapor barrier and a minimum 
of R19 insulation. The vapor  barrier shall be installed on the warm side of the 
insulation. All joints, door frames, electrical outlets or switches and any pipes or 
vents  that  go  through  the cellar  shall  be  sealed  to  prevent  air  and  moisture 
leakage  into  the  cellar.  Concrete,  rock,  and  brick  are  not  insulation  or  vapor 
barriers. 
Doors shall be of a minimum size, insulated to at least  R13 and tightly sealed 
with high quality weather stripping. Be sure to seal the bottom of the door and fill 
gap between the door’s frame and wall before installing the cap molding.  
In  order  to  maintain  55  °F  in  the  wine  cellar,  the  ambient  temperature 
surrounding the enclosure shall not exceed the temperature of the cellar by more 
than 25 °F. No cellar wall shall receive direct sun or strong wind. 
Lighting shall be of low wattage, with a timer to insure lights are not left on when 
the cellar is not occupied. 
The cooling system will not be able to maintain the proper temperature if fresh 
moisture-laden air is constantly being introduced to the cellar. Symptoms of this 
condition  are;  cooling  unit  runs  all  the  time  with  only  a  slight  reduction  in 
temperature  and/or  water overflows from the unit. Because of  the temperature 
difference  between  the  inside  and  outside,  very  small  cracks  can  allow  large 
amounts of outside air to enter into the cellar. Please be aware that moisture can 
pass  through solid concrete, paint and wood.  Often a  newly constructed  cellar 
contains  fresh  wood,  paint,  concrete  and  other  building  materials.  These 
materials contain large amounts of moisture. When placed into operation in this 
type of environment, the system will work harder to remove this extra moisture 
resulting in increased “run” time. 










