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Insulation

Insulation is a great energy saver and comes in various materials. There are many types available including glass wool, fibreglass insulation, polystyrene, pipe and foil insulation. Insulation can and should be used in many areas in your property such as the loft, flooring, cavities and solid wall insulation. 

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  • 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 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...
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    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...
  • 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...
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    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 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 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 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

  • 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 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 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 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...
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    Unilin CavityTherm Full Fill Insulation PIR Board 1200 x 450 x 100mm

    CavityTherm is an innovative built-in insulation for traditional walls that achieves passive level U-Values as low as 0.12 W/m2K with excellent thermal bridging detailing in cavities less than 150mm wide. The board includes specifically designed rebated...
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    Unilin Thin-R Cavity Wall Insulation PIR Board 1200 x 450 x 100mm

    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...
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    Unilin Thin-R Cavity Wall T&G Insulation PIR Board 1200 x 450 x 100mm

    Unilin / Xtratherm Thin-R Cavity Wall XT/CW (T&G) insulation builds to a system, thanks to its engineered tongue and grooved joints and pre-formed corners. This ensures insulation continuity and minimisation of thermal bridging. XT/CW (T&G) is made for...
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    Unilin Thin-R Pitched Roof Insulation PIR Board 2400 x 1200 x 100mm

    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...

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 thick should loft insulation be?
The recommended depth for loft isolation is 270 millimetres for glass wool, 250 millimetres for rock wool, or 220 millimetres for cellulose.
How much is loft insulation?
The average loft insulation cost is between £5 and £11 per square metre. This means that it should cost no more than about £1250 to insulate a 4-bedroom detached home.
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

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Isover Insulation

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