Thermal insulation of the plinth

The plinth is the lowest part of the facade, just above the ground, up to a height of 50–60 cm. This area is particularly exposed to moisture and to occasional pressure. Austrotherm XPS resists moisture and pressure and is practically ideal for plinths, because here there is:

• moisture (direct contact with rain, snow and splash water)
• a strong need for insulation because of thermal bridges (where the plinth meets the basement slab or the external basement walls)
• a real chance of pressure on the plinth, e.g. impacts from bicycles, balls, small vehicles etc.

We therefore recommend our Austrotherm XPS P insulation board with a rough surface. It is highly pressure-resistant and moisture-tight and, of course, insulates very well. Render or adhesive bonds very well to Austrotherm XPS TOP P precisely because its surface is rough.

Installation

Plinth insulation on buildings with a basement

1. 1ETICS facade (insulation system) with facade insulation board (Austrotherm EPS AF or Austrotherm AF PLUS)
2. 2Masonry wall
3. 3Austrotherm XPS TOP P
4. 4Austrotherm XPS TOP 30
5. 5Horizontal waterproofing
6. 6Floor finish
7. 7Screed
8. 8Separating layer (foil)
9. 9Austrotherm EPS T650 (impact sound insulation)
10. 10Levelling layer
11. 11Austrotherm XPS TOP P
12. 12Masonry basement wall
13. 13Separating layer (foil)

Plinth insulation with a foundation slab

1. 1ETICS facade (insulation system) with facade insulation board (Austrotherm EPS AF or Austrotherm AF PLUS)
2. 2Masonry wall
3. 3Austrotherm XPS TOP P
4. 4Horizontal waterproofing
5. 5Floor finish
6. 6Screed
7. 7Separating layer (foil)
8. 8Austrotherm EPS T650 (impact sound insulation)
9. 9Horizontal waterproofing
10. 10Foundation slab
11. 11Separating layer (foil)
12. 12Austrotherm XPS TOP 30 or Austrotherm XPS TOP 50
13. 13Levelling layer (blinding concrete)
14. 14Separating layer (foil)
15. 15Vertical waterproofing

Plinth insulation on buildings without a basement, with strip foundations

1. 1ETICS facade (insulation system) with facade insulation board Austrotherm EPS AF or Austrotherm EPS AF PLUS
2. 2Masonry wall
3. 3Austrotherm XPS TOP P
4. 4Waterproofing (horizontal)
5. 9Waterproofing
6. 11Separating layer (foil)
7. 12Austrotherm XPS TOP 30 or Austrotherm XPS TOP 50
8. 13Levelling layer (blinding concrete)
9. 14Separating layer (foil)
10. 15Waterproofing (vertical)

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