Last updated date
Structural Products

Isover Spacesaver

Thermal insulation for pitched roof joist applications
Read more
Read less
Thermal insulation for pitched roof joist applications
 
 
 
 
 

Description

Isover Spacesaver is a glass mineral wool roll which is pre-perforated to fit between common joist spacing at ceiling level. It is supplied in longer-length rolls to increase efficiency by reducing the number of rolls required to be delivered, stored and opened during installation. Other products within the range include Isover Spacesaver Lite, Isover Spacesaver Ready-Cut and Isover Spacesaver Plus.

Key Benefits

  • Thermal Insulation - Thermal conductivity of 0.044 W/m.K. Helps to reduce heat loss within the building envelope and as a result decreases energy costs.
  • Isover Spacesaver has Eurofins Indoor Air Comfort® Gold Certification - the highest accreditation for indoor air quality.
  • Ease of Install - The benefit to the installer with our Spacesaver products is that they are pre-perforated rolls to fit common joist spacing, significantly aiding installation. In contrast, other insulation materials—such as insulation boards—typically require manual cutting to fit joist spacing, increasing installation time and effort.
    Additionally, the longer roll lengths of these particular Spacesaver products allow more material to be laid in one go, helping to meet installation requirements with less effort compared to other insulation materials used in the same application.
  • Fire Classification - Achieves a Euroclass A1 Reaction to Fire classification, according to EN 13501-1. For enquiries regarding test data for Reaction to Fire classifications, please contact [email protected].
  • Sustainability
    • Contains Recycled Glass - Isover Spacesaver contains recycled glass. A combination of 52% externally sourced recycled glass and 30% internally sourced glass cullet.
    • Renewable Electricity - All electric equipment in the plant powered by 100% renewable electricity.

Application

Pitched Roof/Joist level/Loft
Ground Floor
Flat Roof

Product Variants

Articles information
Name Thickness (mm) Length (m) Length (mm) Width (m) Pack/Roll Area (m2) Rolls/Packs per Pallet Pallet Area (m2) λD Declared thermal conductivity (W/m.K) RD Declared thermal resistance (m².K/W)
Name5200840154 Thickness (mm)200 Length (m)5.2 Length (mm)5200 Width (m)1.16 Pack/Roll Area (m2)6.03 Rolls/Packs per Pallet24 Pallet Area (m2)144.77 λD Declared thermal conductivity (W/m.K)0.044 RD Declared thermal resistance (m².K/W)4.5
Name5200854520 Thickness (mm)100 Length (m)12.18 Length (mm)12180 Width (m)1.16 Pack/Roll Area (m2)14.13 Rolls/Packs per Pallet24 Pallet Area (m2)339.09 λD Declared thermal conductivity (W/m.K)0.044 RD Declared thermal resistance (m².K/W)2.25
Name5200854529 Thickness (mm)150 Length (m)8.05 Length (mm)8050 Width (m)1.16 Pack/Roll Area (m2)9.34 Rolls/Packs per Pallet24 Pallet Area (m2)224.11 λD Declared thermal conductivity (W/m.K)0.044 RD Declared thermal resistance (m².K/W)3.4
Name5200854549 Thickness (mm)170 Length (m)7.03 Length (mm)7030 Width (m)1.16 Pack/Roll Area (m2)8.15 Rolls/Packs per Pallet24 Pallet Area (m2)195.72 λD Declared thermal conductivity (W/m.K)0.044 RD Declared thermal resistance (m².K/W)3.85

Technical Information

Category Attribute Value
Category General Attribute Fire Classification Value Euroclass A1 Reaction to Fire classification according to EN 13501-1.
Category Standards and Certifications Attribute Quality Standard Value All Isover products are manufactured under Quality Management Standard – ISO 9001.
Attribute Indoor Air Quality Value Achieves a Eurofins Gold product status for indoor air quality.
Attribute EUCEB Value EUCEB certified demonstrating our mineral wool fibre products conform with Note Q of Regulation (EC) No 1272/2008.
Attribute Environmental Standard Value All Isover products are manufactured under Environmental Management System – ISO 14001.

Documents

Select all
Certificates
2 datasheets related with the product
Certificate - EUCEB
IACG-400-06-01-2025-Indoor-Air-Comfort-Gold-Certificate.pdf
Declaration of Performance
2 datasheets related with the product
DoP - 0004 CE - Isover Spacesaver
DoP - 0004 UK - Isover Spacesaver
Environmental Product Declaration (EPD)
4 datasheets related with the product
EPD - Isover Spacesaver - 100mm
EPD - Isover Spacesaver - 150mm
EPD - Isover Spacesaver - 170mm
EPD - Isover Spacesaver - 200mm
Product Datasheet
1 datasheet related with the product
PDS - Isover Spacesaver
Product guide
1 datasheet related with the product
Product and Delivery Guide.pdf
Safe Use Instruction Sheet
1 datasheet related with the product
SUIS - Safe Use Instruction Sheet
Regulatory Guidance
1 datasheet related with the product
Thermal Solutions for Residential Buildings
Isover Spacesaver

Not what you were looking for? Check out our other building insulation products