Fibreglass Loft Insulation Roll

Product Code 2123c
From £25.93
Incl. VAT £31.12

Est. delivery: 2-3 Working Days

View delivery options
  • Un-faced glass mineral wool roll
  • Lightweight, flexible, resilient and non-combustible
  • Provides thermal and acoustic insulation
  • Suitable for use with timber joists at 400mm and 600mm centres
  • Partially cut perforations

Fibreglass Loft Insulation Roll

The Knauf fibreglass loft insulation roll is a highly flexible low-density glass mineral wool quilt. It is light in weight, very resilient and non-combustible. All rolls are partially perforated and measure at 1160 millimetres by 9.2 metres with a thickness of 100 millimetres.

Suitable for new builds and properties undergoing renovation alike, the Knauf fibreglass loft insulation roll will be ideal for numerous applications. These loft rolls are completely rot proof, odourless as well as being non-hygroscopic.

The roll will not sustain unwanted vermin and will successfully prevent any fungi, bacteria and mould growth. Primarily used for the thermal insulation of pitched roofs at ceiling levels, you can also use the Knauf fibreglass loft insulation roll on floors.

When used at ceiling levels, it is normally laid in two layers – the first one between the joists and the second one over them. These rolls do not possess any threat to the environment and have zero ODP (Ozone Depletion Potential) and zero GWP (Global Warming Potential).

Manufactured in accordance with the BS EN 13162, the EN 50001, the OHSAS 18001, the ISO 14001 as well as the ISO 9001 energy management systems, you can sit back and relax knowing that you are choosing a high quality product that has been tested and accredited by relevant regulatory bodies.

The Knauf fibreglass loft insulation roll offers excellent vapour resistivity and is extremely simple to handle and install. They are easily cut down to size due to their light weight, especially when compared to other products used for a similar purpose.

Supplied in polythene packs designed for short term protection, the products should be kept indoors, under covers and off the ground for long term storage. It is best not to leave these rolls exposed to the elements for extended periods of time.

Knauf is both a family name and a large corporate group. Despite its size, Knauf remains a family operated business which has been the exact source of their continued success. With the courage to tackle new ideas, innovations and investments, Knauf is characterised by fresh ideas.

FREE DELIVERY on Roof Windows and Accessories on orders over £50 (Exclusions apply)

All other Delivery Charges are based on weight and location, please add products to your basket to calculate shipping.

A small amount of product lines from particular manufacturers listed below will incur a supplier delivery surcharge.


Next Day Delivery available on orders of stocked items if placed before 2pm

Deliveries will be made between 8am and 6pm. Delivery times apply to weekdays only.


Delivery of Windows to England, Wales, and the majority of Scotland:
Basket Value Price (£)
0-£50 £9.95
Over £50 Free Delivery

Delivery of Windows to the Channel Islands, Scottish Highlands, Northern Ireland, Isle of Man

(postcodes IV, HS, KA27-28, KW, PA20-49, PA60-78, PH17-26, PH30-44, PH49-50, ZE, AB)

Basket Value Price (£)
0-£249 £20
Over £250 £50

It is with regret that we cannot offer a service to these areas for orders over 126kg but please call us on and we will attempt to organise a delivery to your custom if required.


Supplier Delivery Charges

Please note the following supplier delivery surcharges:

Ariel Plastics = £25.00

Britmet Tileform= £35.00

Lead Products(orders under 250kg) = £50.00

Marley Eternit roof tiles (orders under a pallet) = £75.00

Marley Eternit sheeting (exclusions apply) = £50.00

Redland = £100.00

Palram = £25.00

Please phone us on if you are unsure.