Internal Wall Insulation

Internal wall insulation can be used in both commercial and residential properties to improve indoor comfort and boost energy efficiency.

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Why do we need internal wall insulation?

Introducing high quality interior wall insulation is one of the best ways to prevent loss of circulated cool air, protect against fire risks, and improve acoustic capabilities.

It improves energy performance and creates a comfortable home or working environment suitable for all types of internal walls:

Partition walls – Non-load bearing walls used to divide a room. Commonly a wooden or metal stud wall with plasterboard finish or similar.
Dry lining walls – Similar in build to a partition wall, but placed on the inside of the outer wall. This type of internal wall is designed around improving comfort.
Separation walls – Also known as a party wall, these separate adjoining flats, houses and rooms between residential properties.

Applications can be easier and more accessible for certain properties, such as flats. They also have no impact on the external appearance, such as with dry lining walls where the insulation can be installed before the cladding, which is then painted over.

For separation and partition walls, they improve the soundproof qualities between rooms and properties.

Benefits of ROCKWOOL internal wall insulation include:

Reduced heat gained
Protection against fire risks
Cost-effective installation
Blocking and absorbing sound
Matching environment aesthetics

Quick Links

Find Inspiration, guides and reports

Internal Wall Insulation Products

Insulation

Timber Stud Wall Insulation | ROCKWOOL Asia

ROCKWOOL timber stud wall insulation can reduce the impact of heat loss and noise through partition walls.

Insulation

Metal Stud Wall Insulation

Metal stud wall insulation can improve fire safety and sound blocking between spaces in the same property.

ROCKWOOL Consolidation

Applications

Insulation

Separating Party Wall Insulation

ROCKWOOL party wall insulation harnesses the power of natural stone to reduce heat and sound passing through separating walls..

ROCKWOOL Consolidation

Insulation

Partition Wall Insulation

Partition stud wall insulation is one of the best ways to insulate room-dividing walls.

ROCKWOOL Consolidation

Insulation

Dry Lining Insulation

Dry lining insulation enhances the thermal performance of external walls and saves energy.

ROCKWOOL Consolidation

Installation

There are a few different methods of interior wall installation. The method of installation will vary depending on your chosen type:

Fit rigid internal wall insulation boards with dry lining.
Put insulation between solid blocks for a party wall.
Build a metal steel frame or wooden stud wall and fill it with insulation material.

Key tips:

Decide on an installation method – Fitting internal wall insulation boards can be quick and simple, while building a stud wall offers added insulation flexibility.
Measure accurately – Interior wall insulation can take up space in the room where it’s installed. Consider the depth and how it will affect your space.
Fix prior problems – When installing dry lining, fix cracks in existing walls to stop rainwater from coming in. ROCKWOOL insulation is water repellent, but it’s essential to fill in cracks first.

Inspiration and guides for professionals

Calculator and savings

The amount required, and the precise cost to install, will depend on the size of your property, the thickness of its walls, and how many are being insulated.

With dry lining often done to increase the living comfort the insulation thickness is mostly limited to 50-100mm. Naturally, you can always use a local U-value calculator in case you want to further increase the thermal performance of the wall.

Insulating the separation wall between dwellings will save on the energy bill as it will prevent heat transfer from one to the other.

To save time when determining the acoustic and fire performance, we have relevant reports available at local subsidiaries, meeting country-specific requirements, and building traditions.

Use our ROCKWOOL U-value calculator to determine the thermal performance of the building’s walls and possible cost savings. For more details on technical specifications, visit our ROCKSPEC Specification Toolkit.

Learn about energy efficiency

Not only will ROCKWOOL Sound Insulation deliver outstanding acoustic benefits to stop noise transfer in its tracks, it will also reassure residents that their homes are thermally efficient and fire-safe.

Norman Fada

Project Director, Keywest 3

FAQs

Why would you install an internal dry lining system?

How do you soundproof an interior wall?

How do you treat condensation on internal walls?

Case Studies

The challenge

Property developer Keywest 3 transformed an office complex into 43 modern apartments and duplexes overlooking the River Tyne in South Shields, UK.

The developer wanted to minimise any sound transfer between the Manhattan-style properties that could disturb residents.

The solution

After initially selecting 50mm glass wool insulation for internal walls, the company switched to ROCKWOOL stone wool insulation for its improved acoustic performance.

The ROCKWOOL Sound Insulation Slab was chosen after a site visit and sound box demonstration. The solution exceeded current building regulations – providing a protective sound and fire-safe cocoon for each apartment.

The results

The developer decided to install 100mm of insulation per wall leaf, doubling the 50mm that met its standards. This resulted in apartments with exceptional thermal, sound and fire credentials.

Find more case studies