Suspended Ceiling Insulation

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Suspended ceiling insulation panels, slabs or rolls can enhance thermal performance, reduce sound transfer and reduce the risk of fire spreading.   

Suspended ceilings are normally applied beneath concrete floors. They serve many purposes in commercial and residential properties – covering up pipes and air ducts, creating space for light points and forming an aesthetically pleasing finish.  

With effective installation, the gap between this construction and the intermediate floor above can be filled with insulation material – whether you have a wooden or metal frame in place. 

 

Learn more about ROCKWOOL suspended ceiling solutions today. 

Table of contents

  1. Why do we need suspended ceiling insulation
  2. Calculator and savings
  3. Why choose ROCKWOOL solutions
  4. Case studies
  5. Installation
  6. Sustainability
  7. Downloads and resources
  8. Financial support
  9. FAQ
  10. Other relevant applications
Find inspiration, guides and reports

Suspended Ceiling Insulation Products

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ROCKWOOL FLEXI®

ROCKWOOL FLEXI® has been designed as a multi-use, dual purpose acoustic and thermal stone wool insulation with a unique flexible edge along one side. It is suitable for use all over the home, in pitched roof rafters, framed external walls, internal partitions, intermediate floors, separating walls and floors, and timber suspended ground floors.

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RWA45 - All round Insulation Performer

Varying in thermal performance and density the ROCKWOOL Insulation Slab range is a robust insulation solution for a range of general building projects as well as specialist specifications such as schools, hospitals, offshore platforms and ships. The insulation provides excellent acoustic, thermal and fire performance and can be ordered to meet specialist requirements in bespoke thicknesses and densities.

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RW3 Slab Insulation

ROCKWOOL RW3 is a robust insulation solution for a range of general building projects as well as specialist specifications such as commercial, leisure, industrial buildings and more. The insulation provides excellent acoustic, thermal and fire performance

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Roll products

ROCKWOOL Roll

Insulating the loft is one of the most cost effective and efficient ways to improve the energy performance of a home… and reduce utility bills. ROCKWOOL Roll is the ideal loft insulation solution for horizontal loft application. The mineral wool insulation is an all-round high specification option for thermal and acoustic performance, as well as fire resistance.

Why do we need suspended ceiling insulation?

Suspended ceilings offer the opportunity to improve the thermal, acoustic and fire performance of a building – as well as adding design benefits – whether you’re working on a complete new build or a renovation project. 

Adding insulation boosts thermal performance by preventing heat escaping through the ceiling. This helps maintain a consistent room temperature and reduce energy use – at a time when energy consumption is at its highest1. 

Suspended acoustic ceiling solutions provide extra advantages by reducing noise transfer from adjacent dwellings in the same building.

 

Key benefits can include:

  • Reduced heating and cooling costs
  • Improved fire safety
  • Acoustic absorption
  • Visually appealing designs
Relevant resources
Why stone wool?
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ROCKWOOL Red Book
Download here
Technical Support Tools
Access here
ROCKWOOL CPDs
Book now
Rockfon
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Calculator and savings

The amount of insulation required depends on the size of the ceiling surface where it will be applied. Calculate the ceiling area to work out how much material you’ll need. 

Insulated suspended ceiling panels, slabs and rolls vary in thickness and density. The best size will depend on whether you are prioritising thermal, acoustic or fire performance. 

Access the ROCKWOOL U-value calculator to identify which suspended ceiling insulation will help you to achieve your target thermal performance.

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Why choose ROCKWOOL solutions?

You’ll find a wide variety of ROCKWOOL products ideal for suspended ceilings – designed to meet Part L of the building regulations and facilitate energy savings. 

Rolls and slabs can be easily installed to either cover the area in one go, or be customised where detailed cutting and fitting is needed. 

ROCKWOOL solutions significantly boost the thermal comfort of a room. They also reduce the risk of fire spreading as the suspended ceiling insulation is non-combustible.  

In residential properties, stone wool’s acoustic absorption characteristics dampen unwanted noise from neighbours above, as they walk around on the intermediate floor.

Our insulation material can be added and removed without the need for additional fixings, with all ROCKWOOL products fully recyclable to reuse again and again.    

 

Benefits of ROCKWOOL suspended ceiling insulation include2: 

  • Easy installation
  • Fire resilience
  • Reduced sound transfer
  • Thermal properties
  • Aesthetics
  • Circularity

 

Find ROCKWOOL products
Since our stone wool products are usually placed on a suspended ceiling without additional fixings, they are easy to take out and re-use when dismantling the ceiling. Circularity at its best.

Roger Peeters

ROCKWOOL Group Product Manager

Case Studies

The challenge

Solar Spectrum opened new offices, housed within a 38-year-old concrete tower in central Kansas City, USA. Working with Hoefer Wysocki Architecture, they wanted to open-up the space to create a modern office with exposed steel pipes, ductwork and concrete, while reducing noise with the help of effective acoustic insulation.

The solution

The company chose Rockfon ceiling systems and acoustic islands, positioning them strategically throughout the office. This way the existing ceiling elements they wanted remained exposed – but they were able to bring additional acoustic benefits into the space.

The results

Solar Spectrum’s modern offices have a contemporary and appealing aesthetic. The Rockfon panels reflect external light throughout the office – and reduce noise transfer to neighbouring workers from the floor above.

Find more case studies
Solar Spectrum, Office, 1200 Suspension System, Alaska, Island
Rockfon acoustic islands were the best thing available to meet the acoustic design and aesthetic needs, and they included recycled content.

James Evrard

Associate and Project Architect at Hoefer Wysocki Architecture

Installation

Installing ROCKWOOL suspended ceiling insulation is relatively straightforward – whether you have a wooden or metal frame. 

Insulation rolls  can be placed in the suspended frame and quickly rolled out across the large area in one go. Where possible, it’s easiest to do this before the suspended ceiling finishing layer is put in place. 

The same is true when installing slabs. These can be cut to specific sizes, so they fit the frame well. 

 

Key tips:

  • Consider lights and ventilation – Use a standard cutting knife to make adjustments in the insulation for light and ventilation spots. 
  • Measure the ceiling – The surface area of the ceiling provides the best indication of how much insulation material is required. 
  • Insulate before applying a finishing layer – When applying a board finish to the underside of a suspended ceiling, place the insulation before mounting this in place for easier access.
Installation guides for professionals

All ROCKWOOL products are recyclable, whether you’re installing a suspended acoustic ceiling to reduce noise transfer, or your priority is reducing energy consumption.  

Our slabs, roll and panels are all made from natural stone wool and designed to last the lifetime of any building.

Environmental Product Declarations (EPDs) provide life-cycle-assessments, covering the manufacturing process as well as upstream impacts including the extraction and transport of the raw materials, and the downstream impacts such as product transport, maintenance, and disposal options at end-of-life. 

An EPD can be used as inputs to design tools to achieve a required sustainability performance for a building and we provide EPDs for all of the stone wool insulation products manufactured in the UK. 

To request an EPD for suspended ceiling insulation, please contact technical.solutions@rockwool.com

Suspended ceiling insulation also improves thermal comfort and airtightness, reducing energy consumption to heat a property, while lowering the impact of external noise pollution on the occupants. 

Learn more about sustainability at ROCKWOOL

Downloads and resources

To be updated
PDF
7.3 MB

FLEXI Datasheet

Download
To be updated
PDF
2.2 MB

Roll Datasheet

Download
To be updated
PDF
2.3 MB

RW Slab Datasheet

Download
To be updated
PDF
11.2 MB

ROCKWOOL Red Book

Download

Download our guides

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Product Documentation

Approved Document L 2021 Edition (England)

Approved Document L (Part L) 2021 came into force in England on 15 June 2022, bringing big changes to thermal regulations for both new and existing buildings. Download our new guide.

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Product Documentation

The ROCKWOOL Red Book

To help save specifiers’ time and make it easier to identify the correct insulation solutions for facades, walls, floors and roofs, ROCKWOOL has launched the new ROCKWOOL Red Book – a fully interactive guide which provides digital access to technical data, product certification and a wide range of specification support materials.

Financial support

Consult the  Energy Savings Trust website to learn whether there are any additional financial support schemes available for suspended ceiling insulation.

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FAQs

What are the benefits of ROCKWOOL products for ceiling solutions?
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Can I use ROCKWOOL insulation under a concrete floor?

Other relevant applications

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Insulation

Intermediate Floor Insulation

ROCKWOOL intermediate floor insulation improves the acoustic, thermal and fire performance of wooden and concrete separating floors.

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Roof Insulation

Roof Insulation

Roof insulation products for a variety of roof configurations and constructions. The list includes flat roofs, pitched roofs, metal roofs and more.

[1] https://www.sciencedirect.com/science/article/pii/S1674927814500135

[2] https://www.rockwool.com/group/why-stone-wool/

[3] https://www.rockwool.com/group/why-stone-wool/circularity/

[4] https://www.rockwool.com/group/why-stone-wool/

[5] https://cdn01.rockwoolgroup.com/globalassets/why-stone-wool/fact-sheets/factsheet_acoustics.pdf?f=20200415081051

[6] https://cdn01.rockwoolgroup.com/globalassets/why-stone-wool/fact-sheets/factsheet_health-safety?f=20200331013323

 

ROCKWOOL Group