Check local branch stock
-
![Rockwool%20Thermal%20Insulation%20Roll.png]( "Rockwool%20Thermal%20Insulation%20Roll.png")
Rockwool Thermal Insulation Roll 2750 x 1200 x 100mm
The Rockwool Thermal Insulation Roll 100 x 1200 x 2750mm is a A1 fire rated mid-density insulation roll designed for use in lofts. ROCKWOOL Thermal Insulation Roll is designed to increase home comfort and save energy, by insulating one of the most... -
![Rockwool%20Sound%20Insulation%20Slab%201200%20x%20600mm3.png]( "Rockwool%20Sound%20Insulation%20Slab%201200%20x%20600mm3.png")
Rockwool Sound Insulation Slab 1200 x 400 x 100mm
Rockwool Sound Insulation Slab 400 x 1200mm A1 Fire resilient stone wool insulation slabs optimised for sound proofing. ROCKWOOL Sound Slab is used to create quiet, peaceful and comfortable spaces in both residential and commercial environments. Being... -
![Rockwool%20RWA45%20Acoustic%20Insulation%20Slab%201200%20x%20600mm.png]( "Rockwool%20RWA45%20Acoustic%20Insulation%20Slab%201200%20x%20600mm.png")
Rockwool RWA45 Acoustic Insulation Slab 1200 x 600 x 100mm
Rockwool RWA45 Insulation Slabs 600 x 1200mm is a A1 stone wool insulation for general building applications. ROCKWOOL RWA45 is a general building slab designed for use as acoustic, thermal and fire protection of walls, ceilings, floors and roofs. The... -
![Isover-Spacesaver-Roll-L-01.png]( "Isover-Spacesaver-Roll-L-01.png")
ISOVER Spacesaver Wool Insulation Roll 14.13m2 100 x 1160 x 12180mm
ISOVER Spacesaver is a glass mineral wool roll available in a range of thicknesses from 100-200mm, and supplied pre-perforated to 3 x 386mm and 2 x 580mm width to fit between common joists. The economical and easy-to-install glass mineral wool rolls... -
![Isover-Acoustic-Partition-Roll-APR-1200-L-01.png]( "Isover-Acoustic-Partition-Roll-APR-1200-L-01.png")
ISOVER APR 1200 Acoustic Partition Insulation Loft Roll (2 x 600) x 100 x 9170mm
Isover Acoustic Partition Roll (APR 1200) provides high levels of acoustic insulation in partitions, walls and floors to meet requirements in domestic and non-residential buildings. A glass mineral wool roll providing high levels of acoustic insulation... -
![Isover-Cavity-Wall-Slab-CWS-32-L-01.png]( "Isover-Cavity-Wall-Slab-CWS-32-L-01.png")
ISOVER Cavity Wall Slab 32 1200 x 455 x 100mm
A higher-performing glass mineral wool full-fill cavity slab providing excellent thermal performance in masonry cavity walls to meet or exceed the requirements of Part L Building Regulations (England and Wales), enabling U-Values as low as 0.23 W/m2K... -
![Isover-Cavity-Wall-Slab-CWS-36-L-01.png]( "Isover-Cavity-Wall-Slab-CWS-36-L-01.png")
ISOVER Cavity Wall Slab 36 6.55m2 1200 x 455 x 100mm
CWS 36 is a glass mineral wool slab supplied in 50-150mm thicknesses. The strong, resilient, and flexible batts are 455mm wide to fit between standard wall tie spacing, for warmer rooms and greater occupant comfort. -
![ISOVER RD Party Wall Insulation Roll 5.46m2 100 x (2 X 455) x 6500mm]( "ISOVER RD Party Wall Insulation Roll 5.46m2 100 x (2 X 455) x 6500mm")
![ISOVER RD Party Wall Insulation Roll 5.46m2 100 x (2 X 455) x 6500mm]( "ISOVER RD Party Wall Insulation Roll 5.46m2 100 x (2 X 455) x 6500mm")
-
![Rockwool%20Flexi%20Thermal%20Acoustic%20Insulation%20Slab%201200%20x%20600mm.png]( "Rockwool%20Flexi%20Thermal%20Acoustic%20Insulation%20Slab%201200%20x%20600mm.png")
Rockwool Flexi Thermal Acoustic Insulation Slab 1200 x 400 x 100mm
Rockwool FLEXI® 400 x 1200mm is a A1 multi use, dual purpose thermal and acoustic insulation product that offers perfect friction fit for framed constructions. ROCKWOOL FLEXI® is a unique, flexible edged insulation product, developed using patented... -
![Rockwool%20Flexi%20Thermal%20Acoustic%20Insulation%20Slab%201200%20x%20600mm.png]( "Rockwool%20Flexi%20Thermal%20Acoustic%20Insulation%20Slab%201200%20x%20600mm.png")
Rockwool Flexi Thermal Acoustic Insulation Slab 1200 x 600 x 100mm
Rockwool FLEXI® 100 x 600 x 1200mm is an A1 insulation slab that offers perfect friction fit for framed constructions. ROCKWOOL FLEXI® is a unique, flexible edged insulation product, developed using patented technology for a fast and easy, secure... -
![Rockwool%20Sound%20Insulation%20Slab%201200%20x%20600mm3.png]( "Rockwool%20Sound%20Insulation%20Slab%201200%20x%20600mm3.png")
Rockwool Sound Insulation Slab 1200 x 600 x 100mm
Nuisance noise doesn’t always come from external sources. Whether in a living or working environment, controlling the passage of sound between internal spaces can make the difference between a peaceful experience… or a much more stressful one. The... -
![Rockwool%20Thermal%20Insulation%20Cavity%20Batt%20Insulation.png]( "Rockwool%20Thermal%20Insulation%20Cavity%20Batt%20Insulation.png")
Rockwool Thermal Insulation Cavity Batt Insulation 1200 x 455 x 100mm
The Rockwool Thermal Insulation Cavity Batt 100 x 455 x 1200mm is an A1 fire rated Thermal protection insulation for masonry cavity walls. ROCKWOOL Thermal Cavity Batts are a semi-rigid full fill insulation solution for use in external and party masonry...
Glass wool insulation
What is Glass Wool Insulation?
Glass Wool, also known as Fibreglass Insulation, is made by mixing natural glass with recycled glass. The recycled glass can come from items like car windscreens, bottles, and window panes. This glass is melted, pushed through a fine mesh to create thin fibres, and then cooled naturally.
Benefits of Glass Wool
- Acoustic insulation – Helps reduce noise transfer between rooms or areas. Commonly used in places where soundproofing is needed but compressive strength is not. Often sold as fibreglass batts.
- Water resistance – Works well in cavity walls and can be adapted to suit specific wall conditions.
- Fire safety – Non-combustible and won’t burn. It has a European A1 fire rating, making it effective in protecting a building during a fire.
- Thermal efficiency – A lightweight, cost-effective way to keep heat in. It can achieve the same results as other materials at about half the weight.
Where Can Glass Wool Be Used?
- Lofts – Loft insulation helps save both energy and money. Our Spacesaver range comes in thin, strong rolls that are easy to store and install.
- Walls built to regulations – Some walls need to meet specific building standards. RD35 is a high-density glass wool option that is slim yet meets a variety of wall construction requirements.
- Partition (party) walls – These internal walls separate rooms. Glass Wool reduces sound travel between spaces.
- External timber frame walls – Improves both thermal and acoustic performance, keeping buildings warm and blocking unwanted noise.
Frequently Asked Questions
How much loft insulation do I need?
To work out how much loft insulation you need, you should first measure the thickness of your current insulation and work out how much you will need to take the depth to 270mm. Next, you should measure the total area of your loft. This can be done by measuring both the length and width of the space in metres and multiply the length by the width, which will give you the square metre area (m2) of your loft. For example, if the total area in m2 is 50, you will need 8 rolls of insulation.
How thick should loft insulation be?
Insulation should be around 200mm to 270mm thick.
How much is loft insulation?
The average cost of loft insulation is between £5 and £11 per square metre.
Is loft insulation flammable?
Loft insulation is non-combustible.
What is loft insulation made of?
Loft insulation is made of glass fibre, sheep’s wool, hemp, or recycled polyester.
How to guides
What is the Green Homes Grant?
The £2 billion grant aims to encourage homeowners to make their homes more energy efficient, benefitting the environment as well as protecting and creating jobs.
Insulation for every application
Unsure how to keep your keep your heating costs down? Read this article on types of insulation and more.
Celotex Insulation
What is Celotex Insulation and where can it be used? Frequently asked questions answered in this guide.
Isover Insulation
Isover Insulation, a Saint Gobain trademark is a brand that provides high performance insulation solutions. Find out more.
