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R-Control EPS
(expanded polystyrene insulation) is used for all types of R-Control
construction. R-Control EPS has a 35 year history of proven performance.
Thermal Performance
Cost effective thermal design is among the highest priorities in
construction.Thermal resistance (R-value) of an insulation assembly is the
determining factor in thermal performance. R-Control EPS provides optimum
cost value when compared to other rigid insulations of the same R-value
design.
Strength Characteristics
R-Control EPS insulation products are available in a range of densities
necessary to provide both structural integrity and cost effectiveness.
Other rigid insulation products fail to provide this design flexibility due
to limited density availability, and therefore cost more.
Environmental Advantages of R-Control EPS Insulation...
- Inert, non-nutritive, highly stable
- Contains no CFCs, HCFCs, or HFCs
- Contains no formaldehyde
- Can be recycled
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| R-Control EPS Properties |
| Property |
Type
XI |
Type
I |
Type
VIII |
Type
II |
Type
IX |
| Nominal Density |
lb/ft3
(kg/m3) |
0.75
(12) |
1.00
(16) |
1.25
(20) |
1.50
(24) |
2.00
(32) |
| Density1, min. |
lb/ft 3
(kg/m3) |
0.70
(12) |
0.90
(15) |
1.15
(18) |
1.35
(22) |
1.80
(29) |
Design Thermal Resistance
per 1.0 in. thickness |
75ºF |
ºF•ft2•h/Btu (ºK•m2/W) |
3.22
(0.57) |
3.85
(0.68) |
3.92
(0.69) |
4.17
(0.73) |
4.35
(0.77) |
| 40ºF |
ºF•ft2•h/Btu (ºK•m2/W) |
3.43
(0.60) |
4.17
(0.73) |
4.25
(0.75) |
4.55
(0.80) |
4.76
(0.84) |
Thermal Resistance1,min.,
per 1.0 in. thickness |
75ºF |
ºF•ft2•h/Btu (ºK•m2/W) |
3.10
(0.55) |
3.60
(0.63) |
3.80
(0.67) |
4.00
(0.70) |
4.20
(0.74) |
| 40ºF |
ºF•ft2•h/Btu (ºK•m2/W) |
3.30
(0.58) |
4.00
(0.70) |
4.20
(0.74) |
4.40
(0.77) |
4.60
(0.81) |
Compressive strength1
@10% def., min. |
psi
(kPa) |
5.0
(35) |
10.0
(69) |
13.0
(90) |
15.0
(104) |
25.0
(173) |
Flexural strength1,
min. |
psi
(kPa) |
10.0
(69) |
25.0
(173) |
30.0
(208) |
40.0
(276) |
50.0
(345) |
Water Vapor Permeance1
of 1.0 in. thickness,
max., perm |
5.0 |
5.0 |
3.5 |
3.5 |
2.0 |
Water Absorption1
by total immersion,
max., volume % |
4.0 |
4.0 |
3.0 |
3.0 |
2.0 |
Oxygen Index1
min., volume % |
24.0 |
24.0 |
24.0 |
24.0 |
24.0 |
| Flame Spread2 |
20 |
20 |
20 |
20 |
20 |
| Smoke Developed2 |
150-300 |
150-300 |
150-300 |
150-300 |
150-300 |
1 See ASTM C-578 Standard Specification for complete information
2 See UL Certificate AFM-1 available from R-Control Building Systems |
Download a PDF file of our Roofing brochure.
Download a PDF file of our EPS Testing Chart.
Download a PDF file of our Roofing Techdata.
Download a PDF file of our EPS brochure.
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