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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... -
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... -
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... -
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... -
Unilin CavityTherm Full Fill Int Corner Insulation PIR Board 1200 x 450 x 100mm
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. -
Unilin CavityTherm Full Fill Int 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. -
Unilin CavityTherm Full Fill Int Corner Insulation PIR Board 1200 x 450 x 150mm
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. -
Unilin CavityTherm Full Fill Riser Insulation PIR Panel 1200 x 225 x 100mm
The CavityTherm half board allows you to position your insulation at floor levels and positions it directly under the Decks Post-Insulation-Riser (DIP). The CavityTherm can be used on individual floors as well as shared walls, thereby increasing thermal... -
Unilin CavityTherm Full Fill Riser Insulation PIR Panel 1200 x 225 x 125mm
The CavityTherm half board allows you to position your insulation at floor levels and positions it directly under the Decks Post-Insulation-Riser (DIP). The CavityTherm can be used on individual floors as well as shared walls, thereby increasing thermal... -
Unilin CavityTherm Full Fill Riser Insulation PIR Panel 1200 x 225 x 150mm
The CavityTherm half board allows you to position your insulation at floor levels and positions it directly under the Decks Post-Insulation-Riser (DIP). The CavityTherm can be used on individual floors as well as shared walls, thereby increasing thermal... -
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. Uses less materials and generates less waste than traditional methods. -
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. Uses less materials and generates less waste than traditional methods. -
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. Uses less materials and generates less waste than traditional methods. -
Unilin CavityTherm100 Hockey Service V Insulation PIR Board 1200 x 75 x 100mm
Hockey Service voids allows for easy access to the cable that supplies the meter box and is preformed to fit the insulation. It has a frost line of 28mm, with an R value of 6.9m2k/w -
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. The CavityTherm150 Meter Box Preform is based on the CavityTherm140 but with a tighter specification for more precise... -
Unilin CavityTherm125 Hockey Service V Insulation PIR Board 1200 x 75 x 125mm
Hockey Service voids allows for easy access to the cable that supplies the meter box and is preformed to fit the insulation. It has a frost line of 28mm, with an R value of 6.9m2k/w -
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. The CavityTherm150 Meter Box Preform is based on the CavityTherm140 but with a tighter specification for more precise... -
Unilin CavityTherm150 Hockey Service V Insulation PIR Board 1200 x 75 x 150mm
Hockey Service voids allows for easy access to the cable that supplies the meter box and is preformed to fit the insulation. It has a frost line of 28mm, with an R value of 6.9m2k/w -
Unilin CavityTherm150 Meter Box Insulation PIR Panel 1200 x 600 x 150mm
The preformed meter box accessory allows a recess space for placement of meter box, leaving the insulation to run in a continuous plane. The CavityTherm150 Meter Box Preform is based on the CavityTherm140 but with a tighter specification for more precise... -
Unilin ECO Cavity Wall Rebate Edge Insulation PIR Board 1200 x 450 x 100mm
Cavity Wall 360 is a bio-enhanced partial fill wall insulation system. The system incorporates robust facings, engineered jointing details, pre-formed corners and has a certified Lambda of 0.020 W/mK. -
Unilin ECO Cavity Wall Rebate Edge Insulation PIR Board 1200 x 450 x 110mm
Cavity Wall 360 is a bio-enhanced partial fill wall insulation system. The system incorporates robust facings, engineered jointing details, pre-formed corners and has a certified Lambda of 0.020 W/mK. -
Unilin ECO CavityTherm External Corner Insulation PIR Board 1200 x 450 x 110mm
An engineered system providing added resilience against increases in wind-driven rain resulting from climate change. CavityTherm 360 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... -
Unilin ECO CavityTherm External Corner Insulation PIR Board 1200 x 450 x 125mm
An engineered system providing added resilience against increases in wind-driven rain resulting from climate change. CavityTherm 360 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... -
Unilin ECO CavityTherm External Corner Insulation PIR Board 1200 x 450 x 150mm
An engineered system providing added resilience against increases in wind-driven rain resulting from climate change. CavityTherm 360 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...
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.



