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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... -
FloorShield EPS Polystyrene Flooring Sheets SDN 2400 x 1200 x 50mm
Expanded polystyrene comes in a wide variety of shapes and sizes. Within the construction industry, 2400 x 1200mm. EPS is a combustible material but providing it is installed correctly in accordance with the manufacturers instructions, it will not... -
FloorShield EPS Polystyrene Flooring Sheets SDN 2400 x 1200 x 75mm
Expanded polystyrene comes in a wide variety of shapes and sizes. Within the construction industry, 2400 x 1200mm. EPS is a combustible material but providing it is installed correctly in accordance with the manufacturers instructions, it will not... -
Unilin Thin-R Pitched Roof Insulation PIR Board 2400 x 1200 x 25mm
Unilin / Xtratherm XT Thermal Liner MF Insulation PIR Board is a composite insulated panel of Unilin / Xtratherm PIR insulation core with a composite foil facing bonded to 12.5mm tapered edge plasterboard for internal walls, sloped roofs and ceilings... -
Unilin Thin-R Cavity Wall Insulation PIR Board 1200 x 450 x 50mm
Thin-R CW is pre-formed to a system, building to the highest thermal standards whilst maintaining a residual cavity, offering protection from wind driven rain. XT/CW (T&G) for use in traditional masonry walls, builds to the highest thermal standards... -
FloorShield EPS Polystyrene Flooring Sheets SDN 2400 x 1200 x 100mm
Expanded polystyrene comes in a wide variety of shapes and sizes. Within the construction industry, 2400 x 1200mm. EPS is a combustible material but providing it is installed correctly in accordance with the manufacturers instructions, it will not... -
ISOVER Cavity Wall Slab 36 10.92m2 1200 x 455 x 50mm
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 Cavity Wall Slab 36 8.74m2 1200 x 455 x 75mm
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. -
Unilin XT Thermal Liner DD Insulation PIR Board 2400 x 1200 x 32.5mm
Unilin / Xtratherm XT Thermal Liner is specifically designed to create a thermal break in the building envelope and provide a maximum level of insulation with minimal acoustic impact. It is perfectly suited to modern constructions projects where high... -
FloorShield EPS Polystyrene Flooring Sheets SDN 2400 x 1200 x 25mm
Expanded polystyrene comes in a wide variety of shapes and sizes. Within the construction industry, 2400 x 1200mm. EPS is a combustible material but providing it is installed correctly in accordance with the manufacturers instructions, it will not... -
ISOVER APR 1200 Acoustic Partition Insulation Loft Roll (2 x 600) x 50 x 13000mm
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 Spacesaver Wool Insulation Roll 6.03m2 200 x 1160 x 5220mm
With a thermal conductivity of 0.044W/m.K, these ISOVER Spacesaver glass mineral wool rolls will help to reduce heat loss within the building envelope, decreasing the energy loss. The economical and easy-to-install glass mineral wool rolls are suitable... -
Unilin Thin-R Pitched Roof Insulation PIR Board 2400 x 1200 x 50mm
Unilin / Xtratherm XT Thermal Liner MF Insulation PIR Board is a composite insulated panel of Unilin / Xtratherm PIR insulation core with a composite foil facing bonded to 12.5mm tapered edge plasterboard for internal walls, sloped roofs and ceilings... -
Unilin Thin-R Pitched Roof Insulation PIR Board 2400 x 1200 x 75mm
Unilin / Xtratherm XT Thermal Liner MF Insulation PIR Board is a composite insulated panel of Unilin / Xtratherm PIR insulation core with a composite foil facing bonded to 12.5mm tapered edge plasterboard for internal walls, sloped roofs and ceilings... -
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 Spacesaver Wool Insulation Roll 9.34m2 150 x 1160 x 8050mm
Manufactured from up to 75% recycled glass, these ISOVER Spacesaver glass mineral wool rolls are supplied in a range of thicknesses from 100-200mm. The economical and easy-to-install insulation rolls are suitable for loft insulation, where they are... -
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... -
Unilin Thin-R Pitched Roof Insulation PIR Board 2400 x 1200 x 40mm
Unilin / Xtratherm XT Thermal Liner MF Insulation PIR Board is a composite insulated panel of Unilin / Xtratherm PIR insulation core with a composite foil facing bonded to 12.5mm tapered edge plasterboard for internal walls, sloped roofs and ceilings... -
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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 APR 1200 Acoustic Partition Insulation Loft Roll (2 x 600) x 25 x 20000mm
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 APR 1200 Acoustic Partition Insulation Loft Roll (2 x 600) x 75 x 12200mm
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 APR 1200 Acoustic Partition Insulation Loft Roll 12m2 (2 x 600) x 50 x 10,000mm
ISOVER Acoustic Partition Roll (APR 1200) is a 600mm wide push-fit glass mineral wool, designed to fit between standard stud spacings, making installation as easy as possible. It provides high levels of acoustic insulation in partitions, walls and floors... -
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...
Insulation
Insulation is an effective way to save energy in your home or property, as it helps to prevent draughts as well as energy from depleting out of the building, ultimately wasting money. Insulating your loft or attic is a simple and effective way to reduce heat loss and reduce your overall heating bill. Loft insulation is effective for at least 40 years.
Whilst saving energy is the most common incentive for home and property owners, there are many other reasons as to why you might want to install insulation. Insulation can prevent sound from travelling either around your home or between you and neighbouring houses. Good insulation also helps to prevent mould and condensation from appearing in your home, which is often caused by the differing temperatures of your internal and external walls. Insulation can also form part of your home’s resistance against the quick spread of fire.
There are a variety of different insulation products that we offer at Howarth and knowing which one to purchase will be determined by where you wish to use it and what you want to achieve from it, such as:
Glass wool, which is suitable for lofts and a variety of walls. Glass wool is manufactured from recycled glass, and it is not combustible, so it is ideal for offering both acoustic and thermal performance, as well as being water-resistant. It can also act as a cavity wall insulation, which means that it will trap the air in the insulation material that has been injected into the cavity. The clever use of materials helps trap warm air and prevent air circulating. As a result, heat loss is prevented using conduction and convection.
PIR boards are a rigid insulation board that can be used in walls, flooring, and lofts.
Polystyrene is ideal for walls, flooring and under concrete. It offers an excellent thermal insulator property as an insulation board, and it is also very easy to work with.
Rockwool is a stone-based insulation, which is suitable for cavities, partitions, and external walls, as well as floors and lofts.Pipe insulation is used to insulate all hot and cold-water pipes, including radiators and boiler systems. These are designed to prevent pipes from freezing during the cooler months.
For further information and expert advice about insulation, please contact your friendly local Howarth branch.
Frequently Asked Questions
How to guides

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Celotex Insulation
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Isover Insulation
Isover Insulation - Learn more about Isover and their types of insulation boards.