Isover Spacesaver 200mm loft insulation roll with 0.044 W/mK thermal conductivity, Euroclass A1 fire rating and 6.03m² coverage per roll.
£24.80 £29.76 incl. VAT
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Apply for a Trade AccountIsover Spacesaver 200mm is a glass mineral wool insulation roll designed for thermal insulation at ceiling level in loft and pitched roof applications. With a declared thermal conductivity of 0.044 W/mK and a declared thermal resistance of 4.50 m²K/W, it is suitable for improving energy performance in both new build and refurbishment projects.
The roll is pre-perforated to suit common joist spacings and supplied in longer lengths to improve installation efficiency on site.
Isover Spacesaver roll is manufactured in a 1160mm width and pre-perforated to provide:
This allows the insulation to friction-fit between common timber joist spacings without extensive cutting. The longer roll length (5.2m) reduces the number of rolls required per project and improves on-site efficiency compared to rigid board insulation.
Isover Spacesaver 200mm is primarily used for:
Glass mineral wool may cause temporary mechanical skin irritation during handling. Cutting may generate dust. Workplace Exposure Limits (WEL) for mineral wool dust are 5mg/m³ (8-hour TWA). Appropriate PPE should be worn where required in accordance with COSHH guidance.
The product is not classified as hazardous under UK REACH regulations.
When correctly specified and installed, Isover loft insulation 200mm can contribute to compliance with Approved Document L (Conservation of Fuel and Power). Always confirm required insulation depth against project-specific U-value calculations and current Building Regulations.
| Weight | 15 kg |
|---|---|
| Thickness | 200mm |
| Length | 5200mm |
| Width | 1160mm |
| Thermal Conductivity | 0.044 W/MK |
Isover Spacesaver 200mm is primarily used for loft insulation. Its thickness provides excellent thermal performance, helping to reduce heat loss through the roof and lower energy bills.
It typically has a thermal conductivity of 0.044 W/mK, offering strong thermal efficiency when installed at the recommended depth.
Coverage depends on the roll size. A single roll of Isover Spacesaver 200mm generally covers around 6.03m². To calculate how many rolls you need, divide your loft area (m²) by the coverage per roll.
Yes. The insulation is lightweight, easy to cut, and designed to fit snugly between standard joists. It’s supplied in compressed rolls for easier handling and expands quickly once unwrapped.
Yes, while its main purpose is thermal insulation, the structure also absorbs sound, helping to reduce airborne noise between rooms and from outside.
