Partition and chase insulation

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Partition and chase insulation

The acoustic and thermal comfort is often compromised by poor insulation in the interior.


What do you get from partition and chase insulation?

Partitions divide the interior into individual rooms and mainly have an aesthetic function. However, if they are not properly insulated, there is significant noise transmission between rooms. In other words, you will hear every word uttered in the next room or flat.

This can be prevented by choosing the right insulation. And soundproofing is the usual purpose of erecting a chase. A chase is a structure installed onto one side of an existing wall.

The material most often used for insulating partitions and chases is mineral insulation. It has excellent soundproofing performance, that is, insulates from airborne sound very well, and also improves the structure’s fire resistance because it is non-flammable (fire class A1).

Mineral insulation product range

What about heat insulation?

Mineral wool can provide that too. However, thermal insulation is not usually the primary requirement in partitions as the temperature differences between rooms tend to be low. You will appreciate heat insulation more if the wall separates a room where you live and a cold, unheated space, such as a hall.

Mineral insulation + plasterboard = perfect soundproofing

Plasterboard partitions filled with mineral insulation are the ideal soundproofing combination. Such a system works as a single unit and significantly reduces the transmission of sound between rooms. While the plasterboard reflects excess sound, the remaining sound is absorbed in the mineral core.

Lightweight plasterboard partitions with mineral insulation have an additional advantage: They are many times thinner than a masonry partition while keeping the same acoustic parameters. See for yourself – the soundproofing performance of partitions made of different materials is shown in the figure below.

A practical comparison of the acoustic parameters of different partitions

Plasterboard partition

a) R-CW 75, cladding 1x MA (DF)12.5 mm, mineral insulation 60 mm thick (total thickness: 100 mm)
Rw = 50 dB

b) R-CW 75, cladding 2x MA (DF)12.5 mm, mineral insulation 60 mm thick (total thickness: 125 mm)
Rw = 59 dB

Brick partition

a) 80-mm-thick baked perforated partition brick with 10-mm-thick lime-cement plaster and screed (total thickness: 100 mm)
Rw = 40 dB

b) 115-mm-thick baked perforated partition brick with 10-mm-thick lime-cement plaster and screed (total thickness: 135 mm)
Rw = 47 dB

Cellular concrete partition

a) 100-mm-thick cellular concrete partition wall plastered with screed and stucco (minimum total thickness 110 mm)
Rw = 39 dB

b) 125-mm-thick cellular concrete partition wall plastered with screed and stucco (minimum total thickness 135 mm)
Rw = 41 dB

It is clear that, despite a lower thickness, the plasterboard partition with mineral insulation gives the best soundproofing performance.

Try smart applications


Plasterboard calculator

Calculate how much material you will need to build a plasterboard partition or chase. It only takes a few minutes in the Rigips calculator.

Calculate   ➔

Kalkulátor - Rigips


Why do Isover materials absorb sound so well?

Proper soundproofing insulation must not be made of a homogeneous material. That is why Isover materials have a structure made of long flexible fibres. Moreover, these are so laid in the boards as to increase the overall flexibility of the material, which still improves the absorption properties. Sound absorption is also boosted by the optimum fibre cross-section and diameter as well as the durability and stability of the physical properties of the material.

How much will insulation cost you? Ask for a free estimate.

Our engineering specialists will be happy to assist you in choosing the right material, calculate the required quantity as well as tentative price and tell you where to find the nearest vendor.
This service is completely free of charge.

+420 226 292 221


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