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ENERGY EFFICIENT VALUE

SunTerra EnergyBlock changes our paradigm of concrete block construction. Before we considered block construction as a poorly insulated wall, now we have a block wall system with superior insulation value over other choices of construction. Before an exterior block wall absorbed heat from the interior and discharged it through and to the exterior, now we can construct a block wall that absorbs heat, stores it and discharges it back when we need it for warmth in the winter, or eliminates heat when we need to stay cool in the summer. SunTerra EnergyBlock with mass–enhanced, high R–value provides the best energy value for buildings today.

IECC International Energy Conservation Code

 
WALL INSULATION REQUIREMENTS – R-VALUE RESIDENTIAL
 
Climate Zone
Wood 
Framed Wall
Mass Wall
Interior Insulation
Mass Wall
Exterior Insulation
Basement Wall
Interior Insulation
Basement Wall
Exterior Insulation
1
13
4
3
0
0
2
13
6
4
0
0
3
13
8
5
13
5
4 Except Marine
13
10
5
13
10
5 and 4 Marine
20
17
13
13
10
6
20
19
15
19
15
7 and 8
21
21
19
19
15
 
 
 ICF
SunTerra EnergyBlock™

SunTerra EnergyBlock™

 


WALL INSULATION REQUIREMENTS – R-VALUE COMMERCIAL

 
GROUP R
ALL OTHERS
 
Wood
Framed
Metal
Building
Mass
Wall
Wood
Framed
Metal
Building
Mass
Wall
1
13
16
5.7 ci
13
16
0
2
13
16
7.6 ci
13
16
5.7 ci
3
13
19
9.5 ci
13
19
7.6 ci
4 Except Marine
13 + 3.8 ci
19
11.4 ci
13
19
9.5 ci
5 and 4 Marine
13 + 3.8 ci
13 + 5.6 ci
13.3 ci
13 + 3.8 ci
13 + 5.6 ci
11.4 ci
6
13 + 7.5 ci
13 + 5.6 ci
15.2 ci
13 + 7.5 ci
13 + 5.6 ci
13.3 ci
7
13 + 7.5 ci
19 + 5.6 ci
15.2 ci
13 + 7.5 ci
19 + 5.6 ci
15.2 ci
8
13 + 15.6 ci
19 + 5.6 ci
25 ci
13 + 7.5 ci
19 + 5.6 ci
25 ci
  ci = continuous insulation 
SunTerra EnergyBlock™
 
SunTerra EnergyBlock™

 


 IECC International Energy Conservation Code Zone Map


Zone Chart


 SunTerra EnergyBlock Wall Systems Continuous Insulation Value

CONSTANT WALL R-VALUE FACTOR
 Wall - Outside film 0.17
 Wall - Inside film  0.68
 8" concrete block  1.00
Sheetrock or siding 0.55
Constant total 2.40

 

WALL ASSEMBLY R-VALUE  -  CONTINUOUS INSULATION
Installation Location
Above or Below Grade
Above Grade Only
SunTerra EnergyBlock Wall System Number SEB-2 SEB-3 SEB-2+ SEB-3+
Constant R-value factor 2.40 2.40 2.40 2.40
2" extruded polystyrene 10.00      
3" extruded polystyrene   15.00    
2" polyisocyanurate (foil faced)     14.40  
3" polyisocyanurate (foil faced)       21.60
Air spaces without foil 1.00 1.00    
Air spaces with reflective foil     4.00 4.00
Total wall assembly R-value 13.40 18.40 20.80 28.00

 

As you compare and evaluate the required insulation values of the wall system types in the IEC Code you see the superior performance gained with the SunTerra EnergyBlock.

  1. Note how much less insulation is required by IECC for SunTerra EnergyBlock high-mass continuous exterior insulated wall system.
  2. Note SunTerra EnergyBlock wall system performs two times better than ICF wall in climate Zone 4 according to IECC with equivalent insulation R-value. SunTerra EnergyBlock wall system performs 2.6 times better than wood framed walls in climate zone 4 according to IECC with equivalent insulation R-value.
  3. This significantly illustrates the value of high mass construction with insulation only on the exterior surface.

We recommend you not choose the SunTerra EnergyBlock wall system that just meets the IEC Code requirement. By increasing the insulation required you gain much greater performance and significantly reduce energy requirements at a minimum added expense. Mass effect is real. SunTerra EnergyBlock walls significantly outperform low -mass walls of comparable steady state R–value.