Principle of cavity wall insulation

Cavity Wall Insulation

Using the cavity wall isnulation method means the insulation material (glass wool, rock wool, EPS granules or mineral granules) are blown into a double brick wall construction (cavity wall) through a very thin injection hole. In general, the cavity is filled up from the bottom to the top with insulation material. This behaviour depends on the insulation material and it must be filled in according to the manufacturer's specifications.
In the best case, the insulation material fills the cavity completely, free from gaps and with a consistent density. Now the thermal insulation is finished. The consistent allocation and density are of vital importance for the insulation qualities and settlement safety.

The blowing injection tools are injection nozzles with diameters from 18 to 25 mm. They can be equipped with rotatable nozzle heads and special formed nozzle outlets.

Typical blowing insulation materials

  • Glass wool
  • Rock wool
  • EPS granules
  • Mineral granules
Glass wool, rock wool, eps granules and mineral granules
Tools for cavity wall insulation
Injection nozzles, rotary nozzles and a endscope checking cavities
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Nozzles and blowing accessories

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German (2.2 MB)

Hoses and connectors

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German (2.3 MB)

Borescope XF310x9-LED

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German (907.7 kB)

Test elements for checks, tests and demonstrations

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X-Floc insulation blowing machines comparison

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Czech (453.2 kB)

Russian (469.2 kB)