A) Masonry block walls with timber frame
Insulate masonry walls with timber frame structures when the external facade is wooden boards or steel sheets. You can choose two-layer systems with PAROC eXtra and PAROC WAS 25t or a one-layer system with PAROC WAS 35. Two-layer systems minimise cold bridges in the structure.

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Old structure:
- Lightweight aggregate concrete
New structure:
- Timber frame / PAROC eXtra
- PAROC WAS 25t
- Ventilation gap
- Cladding
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B) Masonry block walls with metal frame
This solution includes additional insulation and ventilated external cladding. It can be used both in new buildings and in renovations when insulating lightweight block walls.
Determine the appropriate fixing methods of supporting substructures case by case. See the manufacturers’ instructions for selecting the right fixings and methods. Design the supporting substructures according to the selected cladding material and the instructions given by the system supplier.

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Old structure:
- Old lightweight aggregate concrete
New structure:
- Metal frame / PAROC WAS 35t
- Ventilation gap
- Cladding material
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Old structure:
- Old lightweight aggregate concrete
New structure:
- Metal frame / PAROC eXtra
- Wind protection insulation: PAROC Cortex
- Ventilation gap
- Cladding material
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These solutions include additional insulation and ventilated external cladding. They can be used in both new buildings and renovations insulating block walls.