Thermal Conductivity (K-Value)

A unit used to express the amount of heat, in BTU's per hour, that passes through one square foot of homogeneous material that is exactly one inch thick and has a temperature difference of one degree Fahrenheit between its surfaces. As the K-Value decreases, so does the amount of heat permitted to pass through the material.

Facings as Vapor Barriers

The main function of facings is to act as a vapor barrier. While a vapor barrier may not necessarily be able to stop the flow of water vapor, it does an excellent job of minimizing the rate and volume of the flow. This prevents moisture from accumulating within the insulation blanket and the structure, which translates into consistent thermal values and lower heating and cooling costs.

Facings intended to serve as vapor barriers should be installed on the inner, heated surface of the insulation, where vapor pressure is the highest. This helps in preventing vapor from reaching the cooler air and condensing.

VAPOR BARRIERS PREVENT VAPOR FROM REACHING COOLER AIR AND CONDENSING.

Facing Types

Popular Facings include:

WMP-VR-R,WMP-VR,WMP-VR-BLACK,WMP-10,WMP-10-BLACK,WMP-50

Specialty Facings include:

WCF-50,WCF-30,WMP-30,Arenasheild,Gymguard,R-3035-HD,WMP-F,VRP-HD,VSF-HD

On The Farm

I don't know of any farm operation that could get buy without barns for equipment storage, feed storage or any other general warehousing needs. Many older farms are now removing old wooden structures and replacing their old buildings with new steel structures. While the old antique tractor may look good in front of the old barn, many are weary of storing precious items in an old rotten structure. Steel is stronger, straighter and will last eons longer than wood. In a home, wood is fine. Houses are designed so that the wooden structural components do not have direct exposure to the elements, but on the farm it is often hard to prevent the outside from coming into the barn.

Insulating Against Radiant Heat

Traditional forms of mass insulation, like fiberglass, are effective in preventing heat transfer by conduction and convection, but they less effect on radiant heat. Between 80 and 90% of the radiant heat striking fiberglass will pass through or be "emitted". Radiant transfer typically has as much impact on the temperature in a building as conduction and convection. For more information on radiant barrier facings click here.