Ceiling and soffit insulation

Izolace stropu a podhledu

Ceiling and soffit insulation

The ceiling structure affects interior acoustic and thermal comfort.


The ceiling should be nice to look at and should also be functional. This means it needs to give sufficient heat insulating and soundproofing performance and comply with structural fire resistance requirements. All this can be achieved through a suitably designed structure and appropriate insulation.

We at Isover make materials suitable for insulating beamed as well as suspended ceilings. Suspended ceilings with mineral insulation are the ideal solution where the existing structure does not meet the required standard and your expectations.

View materials   Types of heat insulation

Benefits of insulating a suspended ceiling

Heat insulation: Suitable for the garage, basement or service rooms, generally speaking for unheated premises situated under heated rooms. The insulating material attached with glue or anchors.

Soundproofing:  Suitable mineral wool in your suspended ceiling will reduce the noise penetrating from the room above, such as people talking or radio or television broadcast. Technically speaking, this will improve the structure’s airborne sound insulating performance.

Please note! Insulating the impact sound generated by people walking or moving furniture requires impact insulation in the floor rather than the suspended ceiling.

Better acoustics: Insulation will improve the sound absorption performance of the ceiling and the walls. The interior will have better acoustic performance, which is an important feature in lecture halls and other premises where speech needs to be heard clearly.

Good look: Suspended ceiling will cover rough or uneven ceiling surface and hold distribution lines, wiring and air ducting. Also, you may use it to create a design ceiling featuring LED lights, for example.

Integrated cooling and heating: You can build mats in your suspended ceiling that absorb heat in summer and heat the room in winter. Unlike the conventional air-conditioning, this technology does not whirl the air and spends less energy.

Why choose a plasterboard suspended ceiling?

Plasterboard suspended ceilings with mineral insulation are an easy solution to improve the performance of the existing ceiling structure. Plasterboards are light, easy to mount and available in a range of versions: from acoustic through fire-proof and impregnated to air-cleaning boards.

Acoustic plasterboard ceiling

Plasterboard combined with mineral insulation is often used to build a suspended ceiling that effectively absorbs sound. Ideal for these constructions, Isover Piano can improve airborne sound insulating performance by 8 to 19 dB, depending on insulation thickness and the types of ceiling and plasterboard.

Try smart applications


Plasterboard calculator

Calculate how much material you will need to install a plasterboard suspended ceiling. It only takes a few minutes in the Rigips calculator.

Calculate ➔

Kalkulátor - Rigips


Heat insulation options

Heat insulation of light beam ceiling

The insulation is usually installed over and between the beams. Isover Multimax is the perfect choice as it currently has the best heat insulating parameters on the Czech market. Remember to add a vapour barrier – Isover Vario®, for instance, will do the job brilliantly.

Glued suspended ceiling heat insulation

Ideal for the garage, basement and service room. As you apply the glue on the full surface of Isover Top V or Isover Top V Final basalt wool boards, the installation is quick does not require a smooth base.

Anchored suspended ceiling heat insulation

Another option for rooms which do not require perfectly nice ceilings. The products you should look for are Isover Fassil NT and Isover Multiplat 34 NT – just use regular dowels as anchorage. These products do not require a smooth base.

Heat insulation in bungalow wooden ceiling

It is often the case that bungalow suspended ceilings must comply with the fire resistance requirement of FI 30 minutes. That is why fire plaster boards and basalt insulation of a minimum thickness of 60 mm are applied. Isover Domo plus and Isover Aku are suitable options, for instance.

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


I want advice


Get a how-to guidance for your building project FREE OF CHARGE

Subscribe to our newsletter and download an e-book full of mounting instructions and tips that will guide you throughout your heat insulation project step by step.


Montážní postupy - e-book