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  Hardrock Dual Density Range


High performance acoustic insulation boards for warm flat roofs.
 
The new Hardrock Dual Density range of Roofing Boards are manufactured using Rockwool’s unique dual density technology. Produced with a robust, high density top surface, the products therefore exhibits excellent point load compressive resistance.

The boards offer the ideal firesafe, acoustic and thermal insulation solution for most types of roof deck, when combined with single ply or high performance built-up roofing systems.


Features & benefits

. Firesafe
  -Tested and assessed by BRE/LPC
  -Listed as LPCB approved product
  -LPS 1181: Part 1 Grade EXT-A rated constructions
. Acoustic performance
  -Excellent sound reduction and absorption performance
  -
Rain noise solutions

  -Solutions to BREEAM Schools 2006

High strength
  -Excellent point load compressive resistance
. Dimensionally stable
Cantilever performance
. Suitable for new build and refurbishment
Single ply mechanically fastened membrane systems
. Faster to install
Fewer insulation fasteners
Single ply fully adhered membrane systems
. Chemically inert – no taping of joints required
Approved membrane systems
Built-up felt roofing systems
3G layer not required

Installation movie
Hardrock DD & Acoustic Membrane installation
Dimensions

Technical datasheet in PDF

Material safety datasheet in PDF

Standards and approvals

Thermal conductivity (λ=0.039 W/mK)

Applications
Thermal Acoustic Fire       
Building
elements
Construction
guides
Performance NBS Plus
clause
CAD
downloads

Flat warm roofs,
concrete deck
& cut to falls
Method

Cut to falls
Thermal

U values

U values with
timber ceiling
J41-425
J42-425

DXF  
DWG   DWF

  
Flat warm roofs,
timber deck
& cut to falls
Method

Cut to falls
Thermal

U values
J41-425
J42-425

DXF  
DWG   DWF

  
Flat warm roofs,
metal deck
& cut to falls
Method

Cut to falls

Movie
Thermal

U values
J41-425
J42-425

DXF  
DWG   DWF

  
Flat warm roofs,
metal deck
(High performance acoustic)
Method

Movie
Acoustic N/A
DXF  
DWG   DWF

  

Download free DWG from Autodesk & Adobe Reader

     Free DWG from Autodesk

 

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