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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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  • Isover-RD-Party-Wall-Roll-L-01.png

    ISOVER RD Party Wall Insulation Roll 3.64m2- 150 x (2 x 455) x 4000mm

    You can save time and money when using the ISOVER RD Party Wall roll as part of a proprietary Robust Detail construction. Choosing this method removes the need for parge coats or wet plastering, as well as the need for costly pre-completion sound testing...
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    ISOVER RD Party Wall Insulation Roll 7.74m2 75 x (2 X 455) x 8500mm

    The ISOVER RD Party Wall glass mineral wool roll is manufactured from up to 75% recycled glass making it a cost effective acoustic insulation used to reduce the passage of sound across a masonry party wall and minimise the air movement within the cavity,...
  • Isover-Cavity-Wall-Slab-CWS-32-L-01.png

    ISOVER Slab 32 Cavity Wall Insulation 85 x 455 x 1200mm (4.37m2)

    Reduce heat loss within the building envelope and decrease energy costs with the ISOVER Cavity Wall Slab (CWS) 32. A glass mineral wool slab that is made from 75% recycled glass and offers a thermal conductivity of 0.032 W/m.K and exceptional thermal...
  • Isover-Spacesaver-Roll-L-01.png

    ISOVER Spacesaver Wool Insulation Roll 8.15m2 170 x 1160 x 7030mm

    ISOVER Spacesaver is a glass mineral wool roll supplied in a range of thicknesses from 100-200mm, and manufactured from up to 75% recycled glass. The economical and easy-to-install glass mineral wool rolls are suitable for loft insulation, where they are...
  • 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...
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    Rockwool Sound Insulation Slab 1200 x 600 x 70mm

    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...
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    Unilin CavityTherm Full Fill Ext Corner Insulation PIR Board 1200 x 450 x 125mm

    CavityTherm Corner Fill is a preformed panel of CavityTherm that folds to provide a 90° corner either external or internal. Corner boards ensure excellent detailing and provide a template for setting out of outer brickwork.
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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 CavityTherm Full Fill Insulation PIR Board 1200 x 450 x 125mm

    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 CavityTherm Full Fill Insulation PIR Board 1200 x 450 x 150mm

    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 CavityTherm Full Fill Insulation PIR Board 1200 x 450 x 90mm

    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 ECO CavityTherm Full Fill Insulation PIR Board 1200 x 450 x 150mm

    Our CavityTherm 360 system is a bio-enhanced high performance composite board of enhanced PIR with a Lambda value as low as 0.020 W/mK for full fill cavity wall applications. When built into a traditional 110-150mm cavity using standard foundation...
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    Unilin Safe-R Cavity Wall Insulation PIR Board 1200 x 450 x 50mm

    Our Safe-R SR/CW Cavity Wall Insulation is an aircrete insulation for traditional masonry cavity walls. The product is designed to achieve excellent U-Values whilst maintaining a residual cavity, offering protection from wind driven rain.
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    Unilin Safe-R Cavity Wall Insulation PIR Board 1200 x 450 x 75mm

    Our Safe-R SR/CW Cavity Wall Insulation is an aircrete insulation for traditional masonry cavity walls. The product is designed to achieve excellent U-Values whilst maintaining a residual cavity, offering protection from wind driven rain.
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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 Insulation PIR Board 1200 x 450 x 60mm

    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 Insulation PIR Board 1200 x 450 x 70mm

    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 Insulation PIR Board 1200 x 450 x 75mm

    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 Plus Corner Insulation PIR Board T&G 1200 x 450 x 80mm

    Unilin / Xtratherm Cavity Wall Plus XT/CWP (T&G) builds to a system thanks to its engineered tongue and grooved joints and pre-formed corners, ensuring insulation continuity and minimisation of thermal bridging. The Cavity Wall Plus tongue and groove...
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    Unilin Thin-R Cavity Wall Plus Insulation PIR Board T&G 1200 x 450 x 80mm

    Unilin / Xtratherm Cavity Wall Plus (T&G) builds to a system thanks to its engineered tongue and grooved joints and pre-formed corners, ensuring insulation continuity and minimisation of thermal bridging. The Cavity Wall Plus tongue and groove jointing...
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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 Cavity Wall T&G Insulation PIR Board 1200 x 450 x 90mm

    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 Flat Roof ALU Single Ply Insulation PIR Board 2400 x 1200 x 150mm

    Unilin / Xtratherm FR/ALU is a high performance Polyisocyanurate flat roof insulation with vapour-tight aluminium foil facings suitable for use with single ply membranes. Designed to fit and seal the full range of single ply roofing systems. The unique...
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    Unilin Thin-R Flat Roof BGM Insulation PIR Board 1200 x 600 x 25mm

    Unilin / Xtratherm ThinR Flat Roof BGM Insulation PIR Board is ideal for use with partially bonded, torched-on and built-up bituminous felt systems. Built-up Bituminous Felt (BGF) is faced with a polypropylene fleece finished bitumen/glass fibre working...

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.

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