Spec-Thermal®

Featuring Korfil Hi-R® from Concrete Block Products Group.

The Spec-Thermal™ Insulated Masonry system is a pre-insulated concrete masonry unit which provides significantly enhanced thermal performance over conventional masonry or foamed in place masonry.

The block and the insulation are combined at the block manufacturing plant prior to delivery to the job site.

    Product Advantages of Spec-Thermal Insulated Masonry:

  • Provides guaranteed consistent insulation value
  • Permits excess moisture to escape
  • Allows easy installation of pipes, conduits, etc.
  • Improves dewpoint
  • Improves sound resistance
  • Eliminates concern of shrinkage, toxic fumes or odors
  • Improves the ability of blocks to resist wind driven rain.
  • Can be used above or below grade
  • No lost time or rework if inspection rejects the quality of on-site workmanship
  • Work by other trades is performed with little danger of damage to insulation
  • The block itself can be used as a bond beam

International Energy Conservation Code Climate Zones

International Energy Conservation Code Climate Zones

Thermal Properties: A Preinsulated Hi-R Masonry Units. U-values are based on conventional 3/8” Mortar Joint Construction, U-value units are Btu/hr/sqft/degF

Maximum U-Factors for Mass Walls Prescriptive Requirements (2009 IECC)

Zone All Other Group R

Zone 1

U-0.58

U-0.151a  

Zone 2

U-0.151a  

U-0.123

Zone 3

U-0.123

U-0.104

Zone 4 (except Marine)

U-0.104

U-0.090

Zone 5 (& Marine 4)

U-0.090

U-0.80

Zone 6

U-0.80

U-0.071

Zone 7

U-0.071

U-0.071

Zone 8

U-0.071

U-0.052

IECC (2009): Section 502.1 General (Prescriptive) Requirements and Table 502.1.2
BUILDING ENVELOPE REQUIREMENTS OPAQUE ELEMENT, MAXIMUM U-FACTORS. a Certain exceptions apply.

8 Inch wide Hi-R Wall System

Density of
Block–LBS/FT3  
Wall Type 1*
R  t
Wall Type 1*
U
Wall Type 2**
R  t
Wall Type 2**
U
Wall Type 3***
R  t
Wall Type 3***
U

80

12.21

0.082

13.61

0.074

15.04

0.067

100

10.27

0.097

11.67

0.086

13.10

0.076

120

8.50

0.118

9.90

0.101

11.33

0.088

12 Inch wide Hi-R Wall System

Density of
Block–LBS/FT3  
Wall Type 1*
R  t
Wall Type 1*
U
Wall Type 2**
R  t
Wall Type 2**
U
Wall Type 3***
R  t
Wall Type 3***
U

80

14.56

0.069

15.96

0.063

17.39

0.058

100

12.48

0.080

13.88

0.072

15.31

0.065

120

10.50

0.095

11.90

0.084

13.33

0.075

8 Inch wide Hi-R H Wall System

Density of
Block–LBS/FT3  
Wall Type 1*
R  t
Wall Type 1*
U
Wall Type 2**
R  t
Wall Type 2**
U
Wall Type 3***
R  t
Wall Type 3***
U

80

14.47

0.069

15.87

0.063

17.30

0.059

95

12.48

0.080

13.89

0.072

15.32

0.065

100

11.85

0.084

13.25

0.075

14.68

0.068

110

10.63

0.094

12.03

0.083

13.46

0.074

120

9.48

0.105

10.88

0.092

12.31

0.081

125

8.94

0.112

10.34

0.097

11.77

0.085

135

7.93

0.126

9.33

0.107

10.76

0.093

8 Inch wide Hi-R H Wall System

Density of
Block–LBS/FT3  
Wall Type 1*
R  t
Wall Type 1*
U
Wall Type 2**
R  t
Wall Type 2**
U
Wall Type 3***
R  t
Wall Type 3***
U

80

18.14

0.054

19.82

0.050

21.247

0.047

95

16.337

0.061

17.74

0.056

19.167

0.052

100

15.647

0.064

17.05

0.059

18.477

0.054

110

14.297

0.070

15.70

0.064

17.127

0.058

120

12.987

0.077

14.39

0.070

15.817

0.063

125

12.347

0.081

13.75

0.073

15.177

0.066

135

11.137

0.090

12.54

0.080

13.967

0.072

* Hi-R Wall System only.
** Hi-R Wall System, 1/2 inch gypsum board on furring strips.
*** Hi-R Wall System, 1/2 inch foil-backed gypsum board on furring strips.
A   A third party thermal analysis was completed making use of the Hot Box Test Data from three accredited laboratory services.
A complete Engineering Report dated November 20, 1996, including Addendum Added Nov. 1, 2002, is available upon request.
It covers the thermal values of the Hi-R Masonry Wall Systems.