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150mm Rockwool Roll Loft Insulation

150mm Rockwool Roll Loft Insulation
Guide Price
150mm Rockwool Roll Loft Insulation
Guide Price: £77.61 (£93.13 inc VAT)
Price per m2: £17.72/m2 (£21.26 inc VAT)
  • Product Code: A1-1098
  • Delivery Time: 3 - 5 days
  • Brand: Rockwool
  • (tech. support: 08712221780)
  • Model and Size: 3650x1200mm - 4.38m2
  • Weight: 14.45kg
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150mm Rockwool Roll Loft Insulation

Width: 1200mm
Length: 3650mm
Density: 22kg/m3
Weight of 1m2: 3.3kg
Weight: 14.45kg
Thermal Conductivity: 0.044W/mK
R-Value: 3.4m2K/W

150mm Rockwool Roll Loft Insulation is a multi-functional medium-density insulation roll, especially designed for improving thermal performance in roofs and lofts, and acoustic performance and sound reduction in suspended ceilings. It can be used in a number of different applications in commercial, industrial, and residential buildings. The product includes cutting instructions so that it can accurately fit between the 400mm or 600mm center joists. The product is also highly environmentally friendly, offering 0 ODP and low (less than 5) GWP, thus complying with the Code for Sustainable Homes.

  • Easy to handle, cut, and install,
  • Multi-purpose product,
  • Includes a waterproof covering for outside storage,
  • Excellent thermal characteristics,
  • Able to reduce sound and improve acoustics in suspended ceilings,
  • Environmentally friendly (no harmful gases used in the manufacturing process),
  • High density for an easier fit.

Rockwool Insulation Roll is especially designed to improve the thermal performance of roofs and acoustic performance of suspended ceilings in commercial, industrial, and domestic applications.


When installing the rolls, one should make sure not to install it directly under water tanks, but separate support for a raised walkway should be provided. Electrical cables should be installed in accordance with the British Standard BS 7671: 2001 and the Electricians Handbook, depending on the specific situation, whereas all cables should be lifted free of insulation, where possible. In order to provide air tightness of the insulation, a minimum of 100mm thickness of insulation is recommended when installed onto loft hatches.

When installed between the ceiling joists, it is recommended that the rolls are cross-layered between and over the joists, in order to meet the prescribed U values and decrease potential heat loss. The first layer of insulation should be laid between the ceiling joists (starting from the eaves), and then another layer should be rolled over the existing layer of insulation and the ceiling joists. However, if only upgrading existing insulation that does not need to be removed, only one layer of insulation (preferably 170mm thickness) can be used to cover the existing insulation.

  • Conforms to BS EN 13162:2001 Specification for factory-made mineral wool product;
  • Achieves a reaction to fire classification of A1 as defined in BS EN 13501-1.