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To effectively control visible condensation, it is necessary to reduce the cold surface areas where condensation may occur. It is also important to minimize the air moisture content within a building through the use of properly designed ventilating systems.
Calculated Thermal Values
Basically it is the reciprocal of the calculated U-Value. By definition it is the summation of all the R-Values for each of the building's components. This method of calculation does not consider the thermal short circuit effect of structural members, fastener population or the compression of the insulation at its structural members. It should also be noted that this type of calculation often indicates heat loss values for building envelopes that are lower than those actually found in the finished structure.
Labels on wall insulation rolls indicate the length as well as the number of pieces that need to be cut from each roll. We recommend that all rolls be cut from a clean location to avoid staining the insulation facing.
1) Cut the dimensions of the insulation from the base angle to eave strut or rake plus 6"-12" extra.
2) Attach one end of the insulation to the base angle using double-faced tape.
3) Pull from the other end to stretch the insulation tightly outside the girts to the eave or rake, and attach with double-faced tape.
4) Make sure the facing is toward the interior of the building and attach the panel to the structure.
5) Install the next roll in the same manner, with edges butted snugly. Then fasten the tabs using one of the methods described.
Every metal building has some type of base connection along the building perimeter, allowing the connection of sheeting. This "base condition" determines exactly how the panels connect to the foundation. To prevent water and pests from entering the building at the base, panels extend below the finished floor of the building. Online design and pricing systems allows users to choose from a number of different base options.
Standard Base Angle - Our system defaults to a standard base angle condition. This condition consists of a single angle member, attached to both the wall sheets and the slab. Please note that the standard base condition requires that the slab be formed with a 1˝" sheet notch to allow the sheets to extend below the top of the slab.
Deluxe Trim - Deluxe base trim is another option for buildings with concrete slab foundations. Deluxe base trim combines base angle and trim into one piece, providing all the benefits of base trim and base angle. Deluxe base trim is only available in burnished slate color.
Base Girt - The base girt option is designed for buildings that sit on piers rather than a full slab. A base girt system does not rest on or attach to the foundation. The base girt attaches to clips on the columns about 6" above the foundation. The base girt provides a great connection for liner panel.
Base Channel - The Base channel is a "cee" shaped section that runs the perimeter of the building connected to the floor. It is most commonly used when a liner panel, or interior wall, is going to be installed. The "cee" section provides a pre-positioned connection point for inside panels. This approach requires a sheet notch in the slab (for an alternative, see the combination of base channel and base trim below).
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.Thank you for visiting Design My Own Metal Building. We provide the best service and prices when shopping for metal buildings or steel buildings.