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termPIR® BT

termPIR® BT – Sandwich Panels

The termPIR® BT insulation boards you describe seem like a good option for certain applications, but they differ from the termPIR® AL boards we discussed earlier in a few key ways. Here’s a breakdown:

  • Core: Similar to termPIR® AL boards, these have a PIR rigid foam core known for excellent thermal insulation.
  • Protection Layers: Here’s the key difference: Instead of a gas-tight aluminum layer, termPIR® BT boards use a gas-permeable lining made from glass fiber mesh impregnated with bitumen (BT).

Implications of Gas-Permeable Lining:

  • Applications: Due to the gas-permeable nature, termPIR® BT boards might not be ideal for internal wall insulation where moisture control is critical. They are more suitable for applications where some level of breathability is desired, such as:
    • Flat roof insulation (especially in glued systems)
    • Pipe and tank insulation

Here’s a comparison table summarizing the key differences:

Feature termPIR® AL termPIR® BT
Core PIR rigid foam PIR rigid foam
Protection Layer Gas-tight lining (aluminum, paper, polyethylene) Gas-permeable lining (glass fiber mesh with bitumen)
Applications Internal wall insulation, requires proper moisture management Flat roof insulation (glued systems), pipe and tank insulation

Do you have any specific questions about using termPIR® BT boards for your project, or would you like to explore:

  • Advantages and potential drawbacks of termPIR® BT compared to other insulation options suitable for your application (flat roof, pipes, tanks)?
  • Specific considerations for installing termPIR® BT boards in your chosen application?
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Technical data

1
Kind of core:
Rigid polyisocyanurate foam(PIR)
2
Density [kg/m3]:
 p = 30 kg/m3
3
Declared heat transfer coefficient for lining λ:
 λD = 0,027
for 20 ≤ d < 80 mm		 λD = 0,026
for 80 ≤ d ≤ 120 mm		 λD = 0,025
for 120 < d ≤ 250 mm
4
Type of facing:
Double-sided gas-permeable lining impregnated with bitumen glass veil (BT).
5
Standard board dimensions [mm]:
 600 x 1200 ; 1200 x 2400​​
6
Available boards dimensions [mm]:
1000 x 1200 ; 1200 x 1200 ; 1800 x 1200 ; 1200 x 3000​​
7
Joint types*:
FIT – flat milling, LAP – stepwise milling, TAG – tongue and groove
8
Available boards thicknesses [mm]:
from 20 to 250 mm
9
Board thickness [mm]:
 20 30 40 50 60 70 80 90 100 110 120 130
10
Thermal resistance RD:
 0,70 1,10 1,45 1,85 2,20 2,65 3,05 3,45 3,80 4,20 4,80 5,20
11
Heat transfer coefficient U for roof:
 1,14 0,80 0,62 0,50 0,42 0,37 0,31 0,28 0,25 0,23 0,20 0,19
12
Heat transfer coefficient U for wall and floor:
 1,10 0,78 0,61 0,49 0,42 0,36 0,31 0,28 0,25 0,23 0,20 0,19
13
Board thickness [mm]:
 140 150 160 170 180 190 200 210 220 230 240 250
14
Thermal resistance RD:
 5,60 6,00 6,40 6,80 7,20 7,60 8,00 8,40 8,80 9,20 9,60 10,00
15
Heat transfer coefficient U for roof:
 0,17 0,16 0,15 0,14 0,14 0,13 0,12 0,12 0,11 0,11 0,10 0,10
16
Heat transfer coefficient U for wall and floor:
 0,17 0,16 0,15 0,14 0,14 0,13 0,12 0,12 0,11 0,11 0,10 0,10
17
Reaction to fire (single board):
F

 

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