Under-slab insulation
• ClimaFoam XPS Board provides excellent thermal
performance for the insulation of concrete slabs.
ClimaFoam XPS Board can be multi-layered to
achieve extremely high thermal resistance.
but due to its high level of moisture resistance it can
be installed under the DPC if required.
®
• The high compressive strength of ClimaFoam XPS
Board makes it suitable to be placed under footings and
slab thickenings. For details please consult the designer
or the project engineer.
• ClimaFoam XPS Board is typically installed between
the damp proof course (DPC) and the concrete slab,
concrete slab
concrete slab
ClimaFoam
ClimaFoam
concrete
footing
ground
slab thickening
concrete
footing
ground
ClimaFoam cut to insulate
around footings and thickenings
Table 1) ClimaFoam XPS Board under slab insulation
Wall
stud depth
(mm)
90
ClimaFoam
thickness
(mm)
Area/perimeter ratio (Total slab area ÷ the total length of the perimeter)
1.3 1.9 2.2 2.5 2.8 3.1 4
Total construction R-Value (m K/W)
2
30 1.97 2.23 2.36 2.48 2.60 2.73 3.07
40 2.31 2.57 2.70 2.81 2.94 3.06 3.40
50 2.64 2.90 3.03 3.15 3.27 3.40 3.73
75 3.48 3.73 3.86 3.99 4.10 4.23 4.57
100* 4.32 4.58 4.70 4.82 4.95 5.06 5.41
140
30 2.06 2.34 2.47 2.60 2.74 2.86 3.23
40 2.39 2.67 2.80 2.94 3.07 3.19 3.56
50 2.73 3.01 3.14 3.27 3.40 3.53 3.90
75 3.56 3.84 3.98 4.10 4.24 4.37 4.73
100* 4.39 4.68 4.81 4.95 5.07 5.20 5.57
* 2 layers of 50mm
4