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Glass Wool Insulation

Insulation must be kept dry at all times. Like other insulation, glass wool relies on the microscopic air gaps inside as the insulators. If the insulation gets wet, the air gaps would get filled with water, and you lose the thermal insulation. Getting moisture would bring in potentially destructive results--insulation would then be susceptible to mould. Should any part of a glass wool become wet, it should be cut off, discarded and never used.

Glass wool insulation remains hugely popular, and when properly installed in the roof, floor or walls of a building, it can be expected last as long as the building itself. Additionally, glass wool insulation is resistant to vermin, and are non-combustible.

Glass wool insulation can be somewhat itchy to work with, but it is not caused by chemicals, but simply by the tiny glass-fibre ends that might get pushed into the skin. So, its recommended to wear a long sleeve shirt and gloves when handling glass wool.

Application
  • Loft insulation
  • Cavity wall insulation
  • Within partitions and floors
Characteristics
  • Suitable for temperatures up to 230C,
  • Typically includes 30 60% of post consumer waste,
  • A formaldehyde-free binder,
  • High thermal resistance,
  • Chemically inert,
  • Non-combustible,
  • Extremely low spread of flame,
  • Non emission of dense smoke and toxic gases, on depletion of oxygen,
  • Excellent acoustic insulation values,
  • Odourless, 
  • Does not encourage growth of fungi and vermin,
  • Inherently non-combustible and resistant to rot,
  • Glass wool is stable under varying conditions of temperature and humidity.
  • Excellent tear strength.
  • Not prone to sagging or settling.
  • Rigid slabs have inherently high compression resistance. 
  • Reusable and recyclable
R-value Comparison Chart for Glass Wool Insulation products available at Insulation Shop

Legend

1*  Knauf Earthwool Rafter Roll, Isover Hi-Cav CWS 32, Isover Timber Frame Batt 32, URSA 32 Cavity Insulation Batt, DriTherm 32 Ultimate Cavity Slab

2*  Isover Timber Frame Batt 35, URSA Acoustic Insulation Roll, URSA 35 Cavity Insulation Batt

3*  Isover Acoustic Partition Roll, Isover RD Party Wall Roll, Isover Acoustic Multi-Purpose Slab, Isover Acoustic High Performance Slab, Isover Cavity Wall Slab, Superglass Superwall 36 Cavity Wall Batt

4*  Isover Timber Frame Batt 40

5*  Isover Spacesaver Loft Roll, Isover Timber Frame Batt 43

6*  Superglass Multi Acoustic Insulation Roll, Superglass Multi Roll 44 Loft Insulation, URSA 10 Loft Roll, URSA 10 Diverso Loft Roll, Earthwool Loft Roll 44

Precautions

Glass wool would irritate the eyes, skin, and the respiratory system. You might feel itching skin, eyes, breathing difficulty, sore throat, hoarseness and cough, so you must wear safety clothing and safety goggles.

CHOOSE MANUFACTURERS or scroll down to see products

100mm Superglass Multi Roll 44 Loft Insulation
Guide Price
Brand: Superglass Model and Size: 1.2m x 10.1m - 12.12m2
Delivery Time: 2 - 3 working days
100mm Superglass Multi Roll 44 Loft Insulation is flexible and lightweight mineral wool product, specially designed for thermal and acoustic loft insulation. Its resilient and non-combustible structure makes it the perfect choice for not only loft insulation but also all other common applications wh..
Guide Price: £45.99
£55.19 inc VAT
75mm Superglass Superwall 32 Cavity Wall Batt (pack of 8) 75mm Superglass Superwall 32 Cavity Wall Batt (pack of 8)
Guide Price
Brand: Superglass Model and Size: 1200x455mm - 4.37m2
Delivery Time: 1 - 2 days
75mm Superglass Superwall 32 Cavity Batt is a lightweight, non-combustible, unfaced glass mineral wool batt for use as full or partial fill insulation in new external masonry cavity walls up to 25 m in height in domestic and non-domestic buildings. Superwall 32 is manufactured from nearly 84% r..
Guide Price: £43.30
£51.96 inc VAT
50mm Superglass Superwall 36 Cavity Wall Batt (pack of 16) 50mm Superglass Superwall 36 Cavity Wall Batt (pack of 16)
Guide Price
Brand: Superglass Model and Size: 1200x455mm - 8.74m2
Delivery Time: 1 - 2 days
50mm Superwall 36 Cavity Wall Batt is a lightweight, non-combustible, unfaced glass mineral wool batt for use as full or partial fill insulation in new external masonry cavity walls up to 25 m in height in domestic and non-domestic buildings. Superwall 36 is manufactured from nearly 84% recycled gla..
Brand: Knauf Model and Size: 100mm - 13.89m2
Delivery Time: 1 - 2 days
100mm Earthwool Loft Roll 44 is a flexible low density glass mineral wool quilt which is lightweight, flexible, resilient and non-combustible. The rolls are 1140mm wide and partially perforated to produce either 2 rolls 570mm wide or 3 rolls 380mm wide.CHARACTERISTICSLightweight and economic insulat..
£32.08
£38.50 inc VAT
Brand: Knauf Model and Size: 1200x5250mm - 151.20m2
Delivery Time: 3 - 5 days
75mm Knauf Earthwool Rafter Roll is an unfaced, semi-rigid roll of glass mineral wool with extra high thermal performance, designed for friction fitting between rafters. Friction fitting allows rafter spacing to be completely filled, thus eliminating air gap. It is specifically designed for ins..
£2,233.68
£2,680.42 inc VAT
75mm DriTherm 32 Ultimate Cavity Slab Knauf (pack of 6)
Guide Price
Brand: Knauf Model and Size: 1200x455mm - 3.28m2
Delivery Time: 3 - 5 days
75mm Earthwool DriTherm 32 Cavity Slab is a semi-rigid insulation material made from non-combustible, water repellent, glass mineral wool. They are 455mm wide to suit standard vertical wall tie spacings, ensuring a closed joint with adjacent slabs. Manufactured with Knauf ECOSE Technology - no ..
Guide Price: £31.75
£38.10 inc VAT
25mm URSA Acoustic Insulation Roll
Guide Price
Brand: URSA Model and Size: 1.2x20m - 24.00m2
Delivery Time: 1 - 2 days
25mm URSA Acoustic Roll is a lightweight, non-combustible, unfaced glass mineral wool product used for sound insulation of lightweight metal or wooden stud partitions in both new and existing buildings. This product is manufactured from sand, an abundant, sustainable resource and may also utilise up..
Guide Price: £44.33
£53.20 inc VAT
25mm Isover Acoustic Partition Roll
Guide Price
Brand: Isover Model and Size: 20mx1.2m - 24.00m2
Delivery Time: 2 - 3 working days
25mm Isover Acoustic partition roll (APR 1200) is a glass mineral wool, non-combustible product used for partitions, walls and floors acoustic insulation. Although very lightweight and flexible, thus easy to transport, cut into shape and install, it is very strong and highly resilient. Its non-hygro..
Guide Price: £38.36
£46.03 inc VAT
100mm URSA 10 Loft Roll (split 2 x 570mm or 3 x 380mm)
Guide Price
Brand: URSA Model and Size: 9500x1140mm - 10.83m2
Delivery Time: 1 - 2 days
100mm URSA 10 Loft Roll is a lightweight, non-combustible, unfaced glass mineral wool products for use as loft insulation in cold pitched roofs. URSA 10 Loft roll is perforated to allow it to be split into 2 x 570mm  or 3 x 380mm wide rolls to match the format for use between joists at 600..
Guide Price: £32.00
£38.40 inc VAT
100mm URSA 10 Diverso Loft Roll (split 2x570mm or 3x380mm)
Guide Price
Brand: URSA Model and Size: 9500x1140mm - 10.83m2
Delivery Time: 1 - 2 days
100mm URSA 10 Diverso Loft Roll is a lightweight, non-combustible, unfaced glass mineral wool products for use as loft insulation in cold pitched roofs. URSA 10 Diverso Loft roll is perforated to allow it to be split into 2x570mm or 3x380mm wide rolls to match the format for use between joists ..
Guide Price: £27.28
£32.74 inc VAT
Brand: Isover Model and Size: 100mm - 14.13m2
Delivery Time: 1 - 2 days
100mm Isover Spacesaver is a glass mineral wool roll of high quality, perforated along the roll to allow the user the choice of full, half or third width options from a single roll. The strong, resilient and flexible rolls are pre-perforated to 3 x 386mm and 2 x 580mm widths to fit between comm..
£31.15
£37.38 inc VAT
Brand: Isover Model and Size: 75mm - 7.74m2
Delivery Time: 2 - 3 working days
75mm Isover RD Party Wall Roll is a medium density mineral wool product, mainly applicable to sound insulation of party wall constructions. Due to its zero U value and soundproofing values, it is manufactured to meet the required conditions under Approved Document E of Building Regulations in Englan..
£53.81
£64.57 inc VAT
50mm Isover Acoustic High Performance Slab  (pack of 16) - pallet of 20
Guide Price
Brand: Isover Model and Size: 1200x600mm - 230.40m2
Delivery Time: 3 - 7 days
50mm Isover Acoustic High Performance Slab is a glass mineral wool slab providing high levels of acoustic and thermal performance in wall-lining systems, partitions and modular building applications. Manufactured from a combination of silica sand and up to 86% recycled post-consumer glass from ..
50mm Isover Acoustic Multi-Purpose Slab  (pack of 16)
Guide Price
Brand: Isover Model and Size: 600x1200mm - 11.52m2
Delivery Time: 3 - 5 days
50mm Isover Acoustic Multi-Purpose Slab is a glass mineral wool slab providing high levels of acoustic and thermal performance in wall-lining systems, partitions and modular building applications.APPLICATIONWall lining systemsPartitions and other building structuresCHARACTERISTICSProvides ..
Guide Price: £212.39
£254.87 inc VAT
Brand: Isover Model and Size: 455x1200mm - 10.92m2
Delivery Time: 2 - 3 working days
50mm ISOVER Cavity Wall Slab (CWS) is a non-combustible, silicone impregnated glass mineral wool thermal insulation in masonry cavity walls in full-fill applications. It is designed to be installed during construction in the cavity between two masonry leaves in external walls. Meets Part L Buil..
£45.49
£54.59 inc VAT
50mm Isover Hi-Cav CWS 32 - pack of 14
Guide Price
Brand: Isover Model and Size: 50mm CWS 32 - 7.64m2
Delivery Time: 2 - 3 working days
50mm Isover CWS 32 batt is a dense glass wool insulation product, providing high thermal performance in masonry cavity wall insulation, applicable in various type of buildings including domestic, commercial, industrial, health, retail, education. The products density allows it to have extremely low ..
50mm Isover Timber Frame Batt 32 (Pack of 9) - 16 Packs per Pallet
Guide Price
Brand: Isover Model and Size: 1175x570 - 96.48m2
Delivery Time: 2 - 4 days
50mm Isover Timber Frame Batt 32 is a high density glass mineral wool slab that reduces heat loss through external walls, improving the energy efficiency and carbon footprint of a building as part of two advanced timber frame systems that can meet Part L Building Regulations (England and Wales)..
90mm Isover Timber Frame Batt 35 - (Pack of 10) (16 Packs per Pallet)
Guide Price
Brand: Isover Model and Size: 1175x570 - 107.2m2
Delivery Time: 2 - 3 working days
90mm Isover Timber Frame Batt 35 is a medium density glass mineral wool slab that reduces heat loss through external walls, improving the energy efficiency and carbon footprint of a building as part of two advanced timber frame systems that can meet Part L Building Regulations (England and..
90mm Isover Timber Frame Batt 40 - (Pack of 14) (20 Packs per Pallet)
Guide Price
Brand: Isover Model and Size: 1175x570 - 187.60m2
Delivery Time: 2 - 3 weeks
90mm Isover Timber Frame Batt 40 is a medium density glass mineral wool slab that reduces heat loss through external walls, improving the energy efficiency and carbon footprint of a building as part of two advanced timber frame systems that can meet Part L Building Regulations (England and..
90mm Isover Timber Frame Batt 43 - (Pack of 12) (24 Packs per Pallet)
Guide Price
Brand: Isover Model and Size: 1175x570 - 192.89m2
Delivery Time: 2 - 3 working days
90mm Isover Timber Frame Batt 43 is a medium density glass mineral wool slab that reduces heat loss through external walls, improving the energy efficiency and carbon footprint of a building as part of two advanced timber frame systems that can meet Part L Building Regulations (England and..
25mm Superglass Multi Acoustic Insulation Roll (Split 2 x 600mm)
Guide Price
Brand: Superglass Model and Size: 22.5m x 2x600mm - 27.00m2
Delivery Time: 2 - 3 working days
25mm Multi Acoustic Insulation Roll is a lightweight, non-combustible glass wool roll for use in metal and timber stud partitions, separating floors and drylining systems. Multi Acoustic Roll is easy to install and provides excellent sound absorption performance in accordance with Approved Docu..
40-50mm Cavity Stop Sock GDS100 (pack of 40) - GIS DUO Cavity Stop
Guide Price
Brand: Guardian Insulation Solutions Model and Size: 40-50mm
Delivery Time: 2 - 3 working days
40-50mm Cavity Stop Socks GDS100 - GIS DUO Cavity Stop are designed to prevent the spread of flames and smoke along the cavity  and provides up to 4 hours fire integrity. They are 1200mm mineral wool slabs that are encapsulated in recycled plastic. This plastic will not add to the pro..
Guide Price: £144.00
£172.80 inc VAT
90mm Earthwool FrameTherm Roll 32 - Glass Mineral Wool Knauf (Split 3 x 380mm) - Pallet of 24
Guide Price
Brand: Knauf Model and Size: 4.5m x 1.4m - 123.2m2
Delivery Time: 3 - 5 days
90mm Knauf Earthwool FrameTherm Roll is a lightweight, flexible, resilient and non-combustible glass mineral wool quilt, used for friction fitting between timber studs and rafters. The rolls are 1140mm wide and ready cut to produce 3 rolls in 380mm widths. It is specifically designed for f..
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