Insulation

Below find detailed information concerning each of the following topics:

 

Advantages

National Partitions Steel Skin Products Have 6 Main Advantages over the others!

  • Our Steel is Galvanized ... Fight against rust and
    corrosion
  • Our Steel is Stucco Embossed ... to be more tolerant
    of those minor dents, dings, marks and scratches...
  • Looks newer longer.
  • It's Protected... with a clear plastic film that is temporarily laminated to safeguard the finish from fabrication to installation. ASK ANY INSTALLER... THIS EXCLUSIVE ADVANTAGE IS HUGE!
  • We offer 3 standard colors... so you may choose Tan, Gray or smooth USDA approved paint White.
  • All Matching Components, with posts, channels,
    corners, doors & frames painted to match the panels.
  • And the Lowest Prices in the industry!

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Thermal Values

  Thermal Performance Reference R Values
  Component Excellent Good Moderate Minimal
 
Ceiling
24
19
13
9
 
Walls
13
11
8
7
 
Floor
19
13
9
7

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R Values

Common R Values

  Material R Material R Material R
 
Gypsum - 1/2"
0.45
Fiberglass - 3.5"
13.48
Honeycomb - 3"
2.59
 
Gypsum - 5/8"
0.56
Fiberglass - 6"
19-23
Single Glass
0.94
 
Plywood - 1/2"
0.02
Polyurethane - 1"
5.88
Insulated Glass
1.65
 
Hardboard - 1/8"
0.09
Polystyrene - 1"
4.0
Concrete Block - 8"
1.11
 
Hardboard - 3/16"
0.14
Isocyanurate - 1"
7.5
Polystyrene - 3"
12.0
 
Floor Tile - 1/8"
0.05
Mineral Tile - 1/2"
1.19
Polyurethane - 3"
17.6
 
Mineral Wool - 1"
3.7
Door - Wood Core
1.96
Isocyanurate - 3"
22.5

NOTE: The sum of all components determines a panel's total R Value.

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Calculations

Calculate R Values:

To calculate a buildings R-value, sum up all U-values of the various building components as a percentage of the overall structure, then convert your answer to R=1/U.

Sample calculation for 10' x 10' x 8' Room:

  Roof 100 sq ft. 24% x U-.25 = .06
  Wall 288 sq ft. 68% x U-.083 = .056
  Glass 32 sq ft. 8% x U-.1.11 = .089
  Total 420 sq ft.     Total U = .205
          Total R = 4.88

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Definitions

BTU -
British Thermal Unit, The quantity of heat required to raise the temperature of one pound of water one degree Fahrenheit.

Thermal Resistance - R - Value -
a unit for the rate of heat flow through a given thickness of a homogeneous or composite material, or construction assembly with or without cavities or reflective surfaces. It is measured by the temperature difference in degrees Fahrenheit between the two exposed faces required to cause one BTU to flow through one square foot per hour. Resistance's may be added.

R -
temp difference F/BTU for 1 sf/hr.

RT -
The total thermal resistance of a construction assembly.

U -
1/RT = Overall Heat Transmission Coefficient.

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