Extruded Polystyrene Foam Insulation
XPS polystyrene foam insulation extruded into rigid boards develops continuous skin surfaces and closed cell cores. The cells have interconnecting walls of consistent thickness with no voids. This uniform structure gives XPS high insulating values, superior moisture resistance and high compressive strength
Benefits
Added Efficiency and comfort
In addition to providing durability to a structure's exterior wall, XPS also gives an even surface to an exterior finish. This helps upgrade substantially the thermal performance of the exterior wall for increased energy savings and occupant comfort. Excellent Resistance to moisture

XPS gives the product a closed-cell structure and continuous skin surface, front and back, that makes it practically impervious to moisture absorption from many sources such as leakage, condensation, freeze/thaw cycling, etc
Comparison of Various Insulations
Property
Extruded
Polystyrene
(XPS)
Extruded
Polystyrene
(EPS)
Sprayed
Polystyrene
(SPU)
Thermal Conductivity w/mK
0.0289
0.034
0.027
Compressive Strengthpsi
kPa
15 - 100
104 - 690
5 - 25
35 - 173
15 - 60
104 - 414
Dimensional Stability% c
2.0
2.0
5.0-12.0
Water AbsorptionVol.%
<0.3d
2.0-4.0d
5.0e
Water VaporPermeability perm
ng/Pa.s.m2

1.1f
63

2.0-5.0f
115 - 287
2.5 - 3.0f
144.176
Service temperature
o F
oC
-65 - 165
-54 - 74
-65 - 165
-54 - 74
-22 - 225
-30 - 107
Thermal Resistance
(at 1 thickness)
(at 25 thickness)
0 F.ft2 .h/btu m2K/W
5.0
0.87
3.1 - 4.2
0.55 - 0.74
6.2
1.10
Extruded Polystyrene Foam Insulation
XPS is available for wide-ranging applications including cold storage, PRMA (Protected Roof Membrane Assemblies), exterior walls of buildings and civil construction. When used in cold storage applications, XPS maintains low thermal conductivity in the presence of high water vapor driving forces and even after prolonged exposure to moisture and freezing conditions.
PRMA (Roofing Applications)
XPS maintains its ability to insulate in the presence of water and has high strength suitable for use under wailking or vehicular traffic surfaces. it is ideal for both construction of new building roofs and existing roofs that need improved insulation.
Cold Storage
XPS provides excellent water resistance properties to perform efficiently in cold storage applications by maintaining its low thermal conductivity in the presence of high vapor pressure and liquid water. It plays an important structural role in providing support beneath an insulated concrete floor slab.
Exterior Wall insulation
Through substantially upgrading the thermal performance of the thermal performance of the exterior wall and providing an even surface for the application of the exterior finish, XPS serves as a suitable base for cementitious coatings over both new and existing building sidewalls .
Civil Construction
XPS controls frost heave by minimizing frost penetration and freezing of sub-grade frost-susceptible soils when placed below pavement and base. It can also be used as a light weight soil replacement material in some retaining wall and embankment applications.
Property
Unit
Test Standard
FM150
FM250
FM300
FM350
FM400
FM450
FM500
FM550
FM650
Compressive Strength
kpa
ASTM 1621
>=150 >=250 >=300 >=350 >=400 >=450 >=500 >=550 >=650
Water Absorption Rate
%(v/v)
ASTM C272
≤-0.1
≤0.1
≤0.1
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
Water Vapor Permeance
ng/(p.a.s.m2)
ASTM E96
≤63
≤35
≤35
≤35
≤35
≤35
≤35
≤35
≤35
Thermal Conductivity
W/m.k@240c
ASTM C518
<=0.0289
Flammability  
ASTM E84
5
Dimension Range
Thickness
mm
ASTM D1622
20,25,
30, 40,50
20,25,
30, 40,
50,60
,70,80,
100
25, 30, 40,50,
60,70,
80,
100
25, 30, 40,50,
60,70,
80,
100
40,50,
60,70,
80,
40,50,
60,70,
80,
40,50,
60,70,
40,50,
60,70,
40,50,
60
Width
600,1200
Length
1200,2400
Minimum Thickness
ss-Square Edge


mm
20
20
25
25
40
40
40
40
40
SL-Shiplap
25
25
25
25
40
40
40
40
40
TG-Tongue
&Groove
30
30
30
30
40
40
40
40
40