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Insulation Boards

Insulation boards are a highly versatile form of insulation that offer excellent thermal efficiency thanks to innovative manufacturing processes and materials such as polystyrene. These boards are ava...

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Common Questions About Insulation Boards

What is PIR Insulation?

Polyisocyanurate or PIR insulation is a popular form of insulation due to its versatility and superb thermal efficiency. It’s one of the most common kinds of insulation in use today, particularly in new build properties throughout the UK.

PIR insulation boards are manufactured by combining several materials together to create a rigid foam board that’s often placed between two foil facings. This protects the insulation board from moisture, one of the most common causes of damage and biggest reasons for inefficiency.

PIR boards is used in a variety of applications, such as loft, wall and floors. It is also incredibly simple to install thanks to its rigidity, which also prevents them from sagging and becoming less effective.

The polyisocyanurate formula used in PIR insulation boards also provides up to eighty times more thermal insulation than alternatives. When combined with the foil facing used by brands such as Celotex, this allows you to prevent thermal-bridging and offers protection from moisture.

Are These Insulation Boards Waterproof?

While PIR insulation boards are generally resistant to moisture, they are not fully waterproof. You should therefore avoid leaving them exposed to rainfall or using them in locations where they will be exposed to water.

Insulation boards exposed to excess water become far less effective, as the moisture fills the air pockets in the insulation board and prevents air from being trapped in there. Excess moisture will also encourage mould build-up on your insulation boards, which will then need to be replaced.

Is PIR Insulation Flammable?

Whilst we urge you to refer to the manufacturer’s fire testing certifications, commercially available PIR insulation is not typically flammable. Much like other types of insulation, such as mineral wool, it has been specially designed to be non-combustible.

What’s more, when placed under extreme heat these insulation boards produce little smoke and will not melt or drip. This ensures the safety of your family and protection of your property in the unfortunate scenario of a fire occurring.

How to Cut Insulation Boards

Rigid insulation boards are very simple to cut cleanly, even for homeowners. All you need is a sharpened utility blade or craft knife.

  1. Mark out where you want to cut using a straight edge and a marker pen.
  2. Carefully slice along the marked edge.
  3. Repeat the cut once more to ensure a full, clean separation.

And you’re done! As always, consult the manufacturer’s guidelines and wear appropriate safety equipment before commencing any work.

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Items 1-24 of 26

Recticel Eurowall - PIR Cavity Wall Insulation Board

Recticel Eurowall - PIR Cavity Wall Insulation Board

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2-5 Days

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Multiple Sizes

Price From:

£123.22

price per item inc vat

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Kingspan Kooltherm K103 - Premium Performance Floor Insulation Board - 1200 x 2400mm

Kingspan Kooltherm K103 - Premium Performance Floor Insulation Board - 1200 x 2400mm

Delivery Truck

2-3 Working Days

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Multiple Thickness

Price From:

£312.88

price per item inc vat

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Kingspan Kooltherm K108 - Premium Performance Partial Fill Cavity Wall Insulation Board - 1200 x 450mm

Kingspan Kooltherm K108 - Premium Performance Partial Fill Cavity Wall Insulation Board - 1200 x 450mm

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2-3 Working Days

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Multiple Thickness

Price From:

£89.12

price per item inc vat

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Kingspan Kooltherm K110 - Premium Performance Soffit Insulation Board - 1200 x 2400mm

Kingspan Kooltherm K110 - Premium Performance Soffit Insulation Board - 1200 x 2400mm

Delivery Truck

2-3 Working Days

Ruler

Multiple Thickness

Price From:

£321.14

price per item inc vat

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Kingspan Kooltherm K12 - Premium Performance Framing Insulation Board - 1200 x 2400mm

Kingspan Kooltherm K12 - Premium Performance Framing Insulation Board - 1200 x 2400mm

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2-3 Working Days

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Multiple Thickness

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Kingspan Kooltherm K7 - Premium Performance Pitched Roof Insulation Board - 1200 x 2400mm

Kingspan Kooltherm K7 - Premium Performance Pitched Roof Insulation Board - 1200 x 2400mm

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2-3 Working Days

Ruler

Multiple Thickness

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Kingspan GreenGuard GG500 - High Performance Extruded Polystyrene Insulation Board - 600 x 1250mm

Kingspan GreenGuard GG500 - High Performance Extruded Polystyrene Insulation Board - 600 x 1250mm

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2-3 Working Days

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Multiple Thickness

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Kingspan Kooltherm KKCC - Premium Performance Insulated Cavity Closer (Pack of 10)

Kingspan Kooltherm KKCC - Premium Performance Insulated Cavity Closer (Pack of 10)

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2-3 Working Days

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Multiple Thickness

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Kingspan Thermabate TB - High Performance Insulated Cavity Closer (Pack of 10)

Kingspan Thermabate TB - High Performance Insulated Cavity Closer (Pack of 10)

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2-3 Working Days

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Multiple Thickness

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Celotex TB4000 - High Performance Thermal Bridging PIR Insulation Board

Celotex TB4000 - High Performance Thermal Bridging PIR Insulation Board

Delivery Truck

2-5 Days

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Multiple Sizes

Price From:

£21.14

price per item inc vat

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Recticel Eurothane PL - PIR Insulated Plasterboard

Recticel Eurothane PL - PIR Insulated Plasterboard

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2-5 Days

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Multiple Sizes

Price From:

£97.39

price per item inc vat

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Kingspan Thermawall TW50 - High Performance PIR Insulation Board for Walls

Kingspan Thermawall TW50 - High Performance PIR Insulation Board for Walls

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2-5 Days

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Multiple Sizes

Price From:

£79.03

price per item inc vat

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Kingspan Kooltherm K112 - Premium Performance Framing Insulation Board - 1200 x 2400mm

Kingspan Kooltherm K112 - Premium Performance Framing Insulation Board - 1200 x 2400mm

Delivery Truck

2-3 Working Days

Ruler

Multiple Thickness

Price From:

£391.86

price per item inc vat

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Kingspan Kooltherm K15 - Premium Performance Rainscreen Insulation Board - 1200 x 2400mm

Kingspan Kooltherm K15 - Premium Performance Rainscreen Insulation Board - 1200 x 2400mm

Delivery Truck

2-3 Working Days

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Multiple Thickness

Price From:

£274.78

price per item inc vat

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Kingspan Kooltherm K110 Plus - Premium Performance Soffit Insulation Board with Building Board - 1200 x 2400mm

Kingspan Kooltherm K110 Plus - Premium Performance Soffit Insulation Board with Building Board - 1200 x 2400mm

Delivery Truck

2-3 Working Days

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Multiple Thickness

Price From:

£1,595.30

price per item inc vat

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Celotex XR4000 - Higher Performance Thick PIR Insulation Board

Celotex XR4000 - Higher Performance Thick PIR Insulation Board

Delivery Truck

2-5 Days

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Multiple Sizes

Price From:

£67.80

price per item inc vat

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Celotex PL4000 - PIR Insulated Plasterboard

Celotex PL4000 - PIR Insulated Plasterboard

Delivery Truck

2-5 Days

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Multiple Sizes

Price From:

£51.90

price per item inc vat

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Recticel Eurothane GP - High Performance PIR Insulation Board

Recticel Eurothane GP - High Performance PIR Insulation Board

Delivery Truck

2-5 Days

Ruler

Multiple Sizes

Price From:

£32.83

price per item inc vat

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Kingspan Thermapitch TP10 - High Performance PIR Insulation Board for Pitched Roofs

Kingspan Thermapitch TP10 - High Performance PIR Insulation Board for Pitched Roofs

Delivery Truck

2-5 Days

Ruler

Multiple Sizes

Price From:

£190.15

price per item inc vat

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Kingspan Thermawall TW55 - High Performance PIR Insulation Board for Walls

Kingspan Thermawall TW55 - High Performance PIR Insulation Board for Walls

Delivery Truck

2-5 Days

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Multiple Sizes

Price From:

£237.58

price per item inc vat

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Kingspan Kooltherm K106 - Premium Performance Full Fill Cavity Wall Insulation Board - 90 x 1200 x 450mm

Kingspan Kooltherm K106 - Premium Performance Full Fill Cavity Wall Insulation Board - 90 x 1200 x 450mm

Delivery Truck

2-3 Working Days

£27.12

price per item inc vat

£50.22

per m²

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Kingspan Kooltherm K118 - Premium Performance Insulated Plasterboard - 1200 x 2400mm

Kingspan Kooltherm K118 - Premium Performance Insulated Plasterboard - 1200 x 2400mm

Delivery Truck

2-3 Working Days

Ruler

Multiple Thickness

Price From:

£1,156.04

price per item inc vat

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Kingspan GreenGuard GG300 - High Performance Extruded Polystyrene Insulation Board

Kingspan GreenGuard GG300 - High Performance Extruded Polystyrene Insulation Board

Delivery Truck

2-3 Working Days

Ruler

Multiple Sizes

Ruler

Multiple Thickness

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Celotex GA4000 - High Performance PIR Insulation Board for Floors, Walls and Roofs

Celotex GA4000 - High Performance PIR Insulation Board for Floors, Walls and Roofs

Delivery Truck

2-5 Days

Ruler

Multiple Sizes

Price From:

£30.05

price per item inc vat

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Items 1-24 of 26

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