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Unilin CavityTherm Full Fill Cavity Tray Insulation PIR Board 1200 x 350 x 100mm
Unilin Cavity Tray Channel helps maintain thermal continuity at roof-to-gable wall junctions, reducing heat loss while supporting compliant cavity wall construction. Designed to integrate with... -
Unilin CavityTherm Full Fill Cavity Tray Insulation PIR Board 1200 x 350 x 125mm
Unilin Cavity Tray Channel helps maintain thermal continuity at roof-to-gable wall junctions, reducing heat loss while supporting compliant cavity wall construction. Designed to integrate with... -
Unilin CavityTherm Full Fill Cavity Tray Insulation PIR Board 1200 x 350 x 150mm
Unilin Cavity Tray Channel helps maintain thermal continuity at roof-to-gable wall junctions, reducing heat loss while supporting compliant cavity wall construction. Designed to integrate with... -
Unilin CavityTherm Full Fill Ext Corner Insulation PIR Board 1200 x 450 x 100mm
The CavityTherm pre-cut corner boards are designed to provide a precise and efficient solution for achieving consistent detailing at cavity wall corners. Where required, corners can also be formed on... -
Unilin CavityTherm Full Fill Ext Corner Insulation PIR Board 1200 x 450 x 125mm
The CavityTherm pre-cut corner boards are designed to provide a precise and efficient solution for achieving consistent detailing at cavity wall corners. Where required, corners can also be formed on... -
Unilin CavityTherm Full Fill Ext Corner Insulation PIR Board 1200 x 450 x 150mm
The CavityTherm pre-cut corner boards are designed to provide a precise and efficient solution for achieving consistent detailing at cavity wall corners. Where required, corners can also be formed on... -
Unilin CavityTherm Full Fill Insulation PIR Board 1200 x 450 x 100mm
CT PIR Cavitytherm is a built-in full wall insulation for traditional walls that achieves passive level U-Values as low as 0.12 W/m2K with thermal bridging detailing in cavities less than 150mm wide... -
Unilin CavityTherm Full Fill Insulation PIR Board 1200 x 450 x 125mm
CT PIR Cavitytherm is a built-in full wall insulation for traditional walls that achieves passive level U-Values as low as 0.12 W/m2K with thermal bridging detailing in cavities less than 150mm wide... -
Unilin CavityTherm Full Fill Insulation PIR Board 1200 x 450 x 150mm
CT PIR Cavitytherm is a built-in full wall insulation for traditional walls that achieves passive level U-Values as low as 0.12 W/m2K with thermal bridging detailing in cavities less than 150mm wide... -
Unilin CavityTherm Full Fill Insulation PIR Board 1200 x 450 x 90mm
CT PIR Cavitytherm is a built-in full wall insulation for traditional walls that achieves passive level U-Values as low as 0.12 W/m2K with thermal bridging detailing in cavities less than 150mm wide... -
Unilin CavityTherm Full Fill Int Corner Insulation PIR Board 1200 x 450 x 100mm
The CavityTherm pre-cut corner boards are designed to provide a precise and efficient solution for achieving consistent detailing at cavity wall corners. Where required, corners can also be formed on... -
Unilin CavityTherm Full Fill Int Corner Insulation PIR Board 1200 x 450 x 125mm
The CavityTherm pre-cut corner boards are designed to provide a precise and efficient solution for achieving consistent detailing at cavity wall corners. Where required, corners can also be formed on... -
Unilin CavityTherm Full Fill Int Corner Insulation PIR Board 1200 x 450 x 150mm
The CavityTherm pre-cut corner boards are designed to provide a precise and efficient solution for achieving consistent detailing at cavity wall corners. Where required, corners can also be formed on... -
Unilin CavityTherm Full Fill Riser Insulation PIR Panel 1200 x 225 x 100mm
A CavityTherm half-board that is positioned below the DPC at floor levels and allows for the recommended overlap between wall and floor insulation boosting thermal bridging performance and cutting... -
Unilin CavityTherm Full Fill Riser Insulation PIR Panel 1200 x 225 x 125mm
A CavityTherm half-board that is positioned below the DPC at floor levels and allows for the recommended overlap between wall and floor insulation boosting thermal bridging performance and cutting... -
Unilin CavityTherm Full Fill Riser Insulation PIR Panel 1200 x 225 x 150mm
A CavityTherm half-board that is positioned below the DPC at floor levels and allows for the recommended overlap between wall and floor insulation boosting thermal bridging performance and cutting... -
Unilin CavityTherm Full Fill Top Insulation PIR Panel 1200 x 225 x 100mm
A CavityTherm half-board that is used to finish wall insulation heights when a full board is not required, reducing cost and wastage on site. -
Unilin CavityTherm Full Fill Top Insulation PIR Panel 1200 x 225 x 125mm
A CavityTherm half-board that is used to finish wall insulation heights when a full board is not required, reducing cost and wastage on site. -
Unilin CavityTherm Full Fill Top Insulation PIR Panel 1200 x 225 x 150mm
A CavityTherm half-board that is used to finish wall insulation heights when a full board is not required, reducing cost and wastage on site. -
Unilin CavityTherm100 Hockey Service V Insulation PIR Board 1200 x 75 x 100mm
The Hockey service voids allows for easy access to the cable that supplies the meter box and is preformed to fit the insulation. -
Unilin CavityTherm100 Meter Box Insulation PIR Panel 1200 x 600 x 100mm
The preformed meter box accessory allows a recess space for placement of meter box, leaving the insulation to run in a continuous plane -
Unilin CavityTherm125 Hockey Service V Insulation PIR Board 1200 x 75 x 125mm
The Hockey service voids allows for easy access to the cable that supplies the meter box and is preformed to fit the insulation. -
Unilin CavityTherm125 Meter Box Insulation PIR Panel 1200 x 600 x 125mm
The preformed meter box accessory allows a recess space for placement of meter box, leaving the insulation to run in a continuous plane -
Unilin CavityTherm150 Hockey Service V Insulation PIR Board 1200 x 75 x 150mm
The Hockey service voids allows for easy access to the cable that supplies the meter box and is preformed to fit the insulation.
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
Insulation for every application
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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.
How to insulate a shed
Where do you start when it comes to insulating your shed? Click on this article to find out more.
Celotex Insulation
What is Celotex? A guide on what Celotex Insulation is and how its used around your home.
Isover Insulation
Isover Insulation - Learn more about Isover and their types of insulation boards.



