Phenolic Insulation Boards

Phenolic insulation boards are the most effective type of rigid insulation boards currently available. Phenolic insulation board is manufactured by a process in which a plastic foam forms an insulating core between two flexible facing layers. It has a high closed cell content and fine cell structure. Rigid phenolic insulation is produced by mixing high solids and phenolic resin with a surface acting agent. The heat created by the reaction evaporates a volatile liquid blowing agent in the mixture produces a mass of small bubbles in the material. The foam is then cured and manufactured in a continuous process to create thin sheet material which is laminated with various facings and cut into boards. Phenolic boards are laminated with pure aluminium foil facings, glass tissue facings, plasterboard.


In order to comply with EC regulations, blowing gases should be CFC and HCFC free--zero ozone depletion potential--and have low global warming impact. The most common blowing agent used in this type of insulation production is pentane, which is a hydrocarbon with similar properties to those of butane and hexane. The rigid boards are faced with, gas tight, aluminium foil or glass tissue in order to help eliminate escaping of the blowing agent in the manufacturing process.

Application
  • External wall insulation with render
  • Partial fill cavity wall insulation
  • Pitched roofs
  • Rainscreen 
  • Soffit insulation
  • Solid and suspended floors

Rigid phenolic insulation products offer very good thermal insulating properties due to the very low thermal conductivity of phenolic foam. Its low thermal conductivity allows specified thermal performance targets to be achieved with minimal thickness of insulation. This is particularly significant where space saving is important.

The reflective foil can also act as a radiant barrier that adds to insulating values. The low emissivity facings improve the thermal performance when positioned next to an unventilated space. This makes the phenolic boards particularly effective when used to partially fill cavities in external walls.

Characteristics

  • Has a high closed cell content (>95%) and fine cell structure,
  • Lightweight, easy to transport, handle and install,
  • High density boards have a good compressive strength and are suitable for floors,
  • Resistant to fungus and mould growth and will not sustain vermin,
  • Can withstand continuous temperatures of up to 120 degrees C,
  • Highly resistant to moisture penetration. Moisture has a minimal effect on its thermal performance,
  • Is dimensionally stable and can be cut accurately to achieve a snug fit in situations such as between rafters, 
  • Has better fire properties,
  • Has very low thermal conductivity, so can be used where a self extinguishing, low smoke emission, material is required,
  • Meets the requirements of building regulations, 
  • Non- biodegradable but waste material can be put back into the manufacturing process for reuse.

Phenolic board is a very versatile material suitable for a large range of applications where thermal performance, moisture resistance, fire performance and in certain cases structural strength is key performance criteria. Phenolic foam is the only material that can provide this unique range of benefits.

R-value Comparison Chart for Phenolic Insulation products available at Insulation Shop



1* Kingspan Kooltherm K103 Floorboard Kingspan Kooltherm K106 Cavity BoardKingspan Kooltherm K107 Pitched Roof BoardKingspan Kooltherm K108 Cavity BoardKingspan Kooltherm K110 Soffit BoardKingspan Kooltherm K118 Insulated Plasterboard 

2*  Kingspan Kooltherm K17 Plasterboard, Kingspan Kooltherm K18 Plasterboard

3*  Kingspan Kooltherm K3 Floorboard, Kingspan Kooltherm K15 Rainscreen Board, Gyproc Thermaline Super Insulated Plasterboard, Kingspan Kooltherm K12 Framing Board, Kingspan Kooltherm K15 Rainscreen Board, Xtratherm Safe-R Thermal Liner SR/TB-MF Mex-Fix, Xtratherm Safe-R Thermal Liner SR/TB Dot & Dab

4*  Kingspan Kooltherm K7 Pitched Roof Board, Kooltherm K10 FM Soffit Insulation Board, Xtratherm Safe-R insulation Board

5*  Kingspan Kooltherm K5 External Wall Board, Kooltherm K8 Partial Fill Cavity Board



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50mm Kingspan Kooltherm K10 FM Soffit Insulation Board (pack of 6)

50mm Kingspan Kooltherm K10 FM Soffit Insulation Board (pack of 6)

50mm K10 - 17.28m2  show quantity discountsDelivery Time: 3 - 5 days

Guide Price: £320.90 (£385.08 inc VAT)

£18.57/m2 (£22.28/m2 inc VAT)

show quantity discounts
A1-1012

Kingspan Kooltherm K10 FM Soffit Insulation Board is a rigid insulation board used for structural ceilings, consisting of a rigid phenolic high performance and CFC/HCFCfree insulation core, which is resistant to petrol and most alkalis, dilute acids and mineral oils but can be sensitive to some..

Guide Price: £320.90 (£385.08 inc VAT)

£18.57/m2 (£22.28/m2 inc VAT)

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A1-1012
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50mm Kingspan Kooltherm K15 Rainscreen Board (pack of 6)

50mm Kingspan Kooltherm K15 Rainscreen Board (pack of 6)

50mm K15 - 17.28m2  show quantity discountsDelivery Time: 7 - 10 days

£328.30 (£393.96 inc VAT)

£19.00/m2 (£22.80/m2 inc VAT)

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A10-716

50mm Kingspan Kooltherm K15 Rainscreen Board consists of a rigid thermoset modified resin insulation core, covered with low emissivity composite foil on both sides and manufactured. The board is very easy to cut and shape by using a saw or a sharp knife. It is very durable when properly install..

£328.30 (£393.96 inc VAT)

£19.00/m2 (£22.80/m2 inc VAT)

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A10-716
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25mm Xtratherm Safe-R SR/PR Phenolic Insulation Board (pack of 12)

25mm Xtratherm Safe-R SR/PR Phenolic Insulation Board (pack of 12)

2400x1200 - 34.56m2  show quantity discountsDelivery Time: 2 - 3 days

Guide Price: £362.16 (£434.59 inc VAT)

£10.48/m2 (£12.58/m2 inc VAT)

show quantity discounts
A10-138
Due to nationwide shortage of Phenolic and PIR insulation lead time may be longer for this product.

25mm Xtratherm Safe-R SR/PR Phenolic foam is a superior performance rigid insulation with enhanced fire performance, consisting of a Class O phenolic foam core with negligible smoke obscuration. Safe-R is faced with low emissivity aluminium facings both sides, and has a thermal conductivit..

Guide Price: £362.16 (£434.59 inc VAT)

£10.48/m2 (£12.58/m2 inc VAT)

show quantity discounts
A10-138
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25mm Kingspan Kooltherm K103 Floorboard (pack of 12)

25mm Kingspan Kooltherm K103 Floorboard (pack of 12)

2400x1200mm - 34.56m2  show quantity discountsDelivery Time: 3 - 5 days

£465.74 (£558.89 inc VAT)

£13.48/m2 (£16.18/m2 inc VAT)

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A1-2076

25mm Kingspan Kooltherm K103 Floorboard is a premium performance lower lambda insulation with a fibre-free rigid thermoset phenolic core manufactured with a blowing agent that has zero Ozone Depletion Potential (ODP) and low Global Warming Potential (GWP). The board faced on both sides with a g..

£465.74 (£558.89 inc VAT)

£13.48/m2 (£16.18/m2 inc VAT)

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A1-2076
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50mm Kingspan Kooltherm K108 Phenolic Cavity Board (pack of 10)

50mm Kingspan Kooltherm K108 Phenolic Cavity Board (pack of 10)

1200x450mm - 5.40 m2  show quantity discountsDelivery Time: 3 - 5 days

£110.61 (£132.73 inc VAT)

£20.48/m2 (£24.58/m2 inc VAT)

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A1-1936

50mm Kingspan Kooltherm K108 Cavity Board is a premium performance rigid thermoset fibre-free phenolic insulation core faced on both sides with a low emissivity composite foil. It is specifically designed to limit thermal bridging and uncontrolled airleakage via junctions in cavity wa..

£110.61 (£132.73 inc VAT)

£20.48/m2 (£24.58/m2 inc VAT)

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A1-1936
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25mm Kingspan Kooltherm K107 Pitched Roof Board (pack of 12)

25mm Kingspan Kooltherm K107 Pitched Roof Board (pack of 12)

2400x1200 - 34.56m2  show quantity discountsDelivery Time: Pre-Order

£481.71 (£578.05 inc VAT)

£13.94/m2 (£16.73/m2 inc VAT)

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A1-2416

25mm Kingspan Kooltherm K107 Pitched Roof Board is the rafter/joist level insulation comprising a premium performance rigid thermoset phenolic insulation core faced on both sides with a low emissivity composite foil facing. With a higher rated thermal conductivity Kooltherm K107 replaces Kingspan Ko..

£481.71 (£578.05 inc VAT)

£13.94/m2 (£16.73/m2 inc VAT)

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A1-2416
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65mm Kingspan Kooltherm K110 Soffit Insulation Board (pack of 4)

65mm Kingspan Kooltherm K110 Soffit Insulation Board (pack of 4)

2400x1200mm - 11.52m2  show quantity discountsDelivery Time: 7 - 10 days

£339.39 (£407.27 inc VAT)

£29.46/m2 (£35.35/m2 inc VAT)

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A1-2086

65mm Kingspan Kooltherm K110 Soffit Board is a premium performance lower lambda insulation with a fibre-free rigid thermoset phenolic core, a 6mm glass tissue based facing on its front surface and low emissivity composite foil on its reverse surface. Manufactured with a blowing agent that has zero O..

£339.39 (£407.27 inc VAT)

£29.46/m2 (£35.35/m2 inc VAT)

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A1-2086
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32.5mm Kingspan Kooltherm K118 Insulated Plasterboard (20mm phenolic insulation + 12.5mm plasterboard) - pack of 24

32.5mm Kingspan Kooltherm K118 Insulated Plasterboard (20mm phenolic insulation + 12.5mm plasterboard) - pack of 24

2400x1200mm - 69.12m2  show quantity discountsDelivery Time: 3 - 5 days

£1,509.45 (£1,811.34 inc VAT)

£21.84/m2 (£26.21/m2 inc VAT)

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A1-2092

32.5mm Kingspan Kooltherm K118 Insulated Plasterboard is a premium performance, lower lambda internal wall insulation, with a fibre-free rigid thermoset phenolic core. It has a 12.5mm plasterboard bonded to its front surface and a composite foil based facing on its reverse surface. It is suitable fo..

£1,509.45 (£1,811.34 inc VAT)

£21.84/m2 (£26.21/m2 inc VAT)

show quantity discounts
A1-2092
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37.5mm Xtratherm Safe-R Thermal Liner SR/TB (25mm Phenolic Core + 12.5mm Plasterboard) - Dot & Dab (pack of 12)

37.5mm Xtratherm Safe-R Thermal Liner SR/TB (25mm Phenolic Core + 12.5mm Plasterboard) - Dot & Dab (pack of 12)

2400x1200 - 34.56m2  show quantity discountsDelivery Time: 2 - 3 days

Guide Price: £647.44 (£776.93 inc VAT)

£18.73/m2 (£22.48/m2 inc VAT)

show quantity discounts
A1-2226
Due to nationwide shortage of Phenolic and PIR insulation lead time may be longer for this product.

37.5mm Xtratherm Safe-R Thermal Liner SR/TB is a composite insulated panel of Xtratherm 25mm Phenolic core with a composite tissue facing bonded to a 12.5mm tapered edge plasterboard for internal applications,fixed with dot & dab adhesive bonding. Xtratherm Safe-R Thermal Liner SR/TB is designed..

Guide Price: £647.44 (£776.93 inc VAT)

£18.73/m2 (£22.48/m2 inc VAT)

show quantity discounts
A1-2226
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37.5mm Xtratherm Safe-R Thermal Liner SR/TB-MF (25mm Phenolic Core + 12.5mm Plasterboard) -  Mechanical Fixing (pack of 12)

37.5mm Xtratherm Safe-R Thermal Liner SR/TB-MF (25mm Phenolic Core + 12.5mm Plasterboard) - Mechanical Fixing (pack of 12)

2400x1200 - 34.56m2  show quantity discountsDelivery Time: 2 - 3 days

Guide Price: £665.07 (£798.08 inc VAT)

£19.24/m2 (£23.09/m2 inc VAT)

show quantity discounts
A1-2234
Due to nationwide shortage of Phenolic and PIR insulation lead time may be longer for this product.

37.5mm Xtratherm Safe-R Thermal Liner SR/TB-MF is a composite insulated panel of Xtratherm 25mm Phenolic core with a composite tissue facing bonded to a 12.5mm tapered edge plasterboard for internal applications, mechanical fixed. Xtratherm Safe-R Thermal Liner SR/TB-MF is designed to provide high l..

Guide Price: £665.07 (£798.08 inc VAT)

£19.24/m2 (£23.09/m2 inc VAT)

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A1-2234
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100mm Kooltherm K5 External Wall Board Kingspan (pack of 5)

100mm Kooltherm K5 External Wall Board Kingspan (pack of 5)

1200x600 - 3.60m2  Delivery Time: Pre-Order

A1-3078

100mm Kingspan Kooltherm K5 External Wall Board is the external wall insulation comprising a premium performance rigid thermoset phenolic insulation core faced on both sides with a glass tissue based facing auto-adhesively bonded to the insulation core during manufacture. The product is manufac..

A1-3078
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SALE!
20mm Kooltherm K5 External Wall Insulation Board Kingspan (pack of 18) - 1200mm x 400mm

20mm Kooltherm K5 External Wall Insulation Board Kingspan (pack of 18) - 1200mm x 400mm

1200x400mm - 8.64m2  Delivery Time: 3 - 5 days

£129.50 (£155.40 inc VAT)

£122.50 (£147.00 inc VAT)

£14.18/m2 (£17.02/m2 inc VAT)

A1-4239

20mm Kingspan Kooltherm K5 External Wall Insulation Board is the external wall insulation comprising a premium performance rigid thermoset phenolic insulation core faced on both sides with a glass tissue based facing auto-adhesively bonded to the insulation core during manufacture. Th..

£129.50 (£155.40 inc VAT)

£122.50 (£147.00 inc VAT)

£14.18/m2 (£17.02/m2 inc VAT)

A1-4239
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25mm Xtratherm Safe-R SR/UF Phenolic Underfloor Insulation Board (pack of 12)

25mm Xtratherm Safe-R SR/UF Phenolic Underfloor Insulation Board (pack of 12)

2400x1200mm - 34.56m2  Delivery Time: 2 - 3 days

A1-4499

25mm Xtratherm Safe-R SR/UF Phenolic foam is a superior performance rigid underfloor insulation with enhanced fire performance, consisting of a Class O phenolic foam core with negligible smoke obscuration. Safe-R SR is faced with low emissivity aluminium facings both sides, and has a ..

A1-4499
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40mm Xtratherm Safe-R SR/RS Phenolic Insulation Rainscreen Cladding Board (pack of 7)

40mm Xtratherm Safe-R SR/RS Phenolic Insulation Rainscreen Cladding Board (pack of 7)

2400x1200mm - 20.16m2  Delivery Time: 2 - 3 days

A1-4555

40mm Xtratherm Safe-R SR/RS Phenolic foam is a superior performance rigid insulation rainscreen cladding board with enhanced fire performance, consisting of a Class O phenolic foam core with negligible smoke obscuration. Safe-R SR/RS is faced with low emissivity aluminium facings both side..

A1-4555
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50mm Kingspan Kooltherm K112 Framing Board (pack of 6)

50mm Kingspan Kooltherm K112 Framing Board (pack of 6)

1200x2400mm - 17.28m2  show quantity discountsDelivery Time: 5 - 7 days

Guide Price: £523.25 (£627.90 inc VAT)

£30.28/m2 (£36.34/m2 inc VAT)

show quantity discounts
A1-2577

50mm Kingspan Kooltherm K112 Framing Board is a a premium performance insulation with a fibre-free rigid thermoset phenolic core used for timber and steel framing systems. The rigid board is covered with low emissivity composite foil on both sides. Kooltherm K112 is implemented to improve therm..

Guide Price: £523.25 (£627.90 inc VAT)

£30.28/m2 (£36.34/m2 inc VAT)

show quantity discounts
A1-2577
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50mm Xtratherm Safe-R SR/CW Phenolic Partial Fill Cavity Insulation Board (pack of 6)

50mm Xtratherm Safe-R SR/CW Phenolic Partial Fill Cavity Insulation Board (pack of 6)

1200x450mm - 3.24m2  Delivery Time: 2 - 3 days

A1-4575

50mm Xtratherm Safe-R SR/CW Phenolic foam board is a superior performance rigid partial fill cavity insulation board with enhanced fire performance, consisting of a Class O phenolic foam core with negligible smoke obscuration. Safe-R SR/CW is faced with low emissivity aluminium facings bot..

A1-4575
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50mm Xtratherm Safe-R SR/FB Phenolic Insulation Framing Board (pack of 6)

50mm Xtratherm Safe-R SR/FB Phenolic Insulation Framing Board (pack of 6)

2400x1200mm - 17.28m2  Delivery Time: 2 - 3 days

A1-4519

50mm Xtratherm Safe-R SR/FB Phenolic foam is a superior performance rigid insulation framing board with enhanced fire performance, consisting of a Class O phenolic foam core with negligible smoke obscuration. Safe-R SR is faced with low emissivity aluminium facings both sides, and has..

A1-4519
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50mm Xtratherm Safe-R SR/ST Phenolic Insulation Soffit Board (pack of 6)

50mm Xtratherm Safe-R SR/ST Phenolic Insulation Soffit Board (pack of 6)

2400x1200mm - 17.28m2  Delivery Time: 2 - 3 days

A1-4539

50mm Xtratherm Safe-R SR/ST Phenolic foam is a superior performance rigid insulation soffit board with enhanced fire performance, consisting of a Class O phenolic foam core with negligible smoke obscuration. Safe-R SR/ST is faced with low emissivity aluminium facings both sides, and has a ..

A1-4539
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56mm Xtratherm Safe-R SR/STP Phenolic Soffit Plus Board - (50mm Phenolic + 6mm Building Panel)

56mm Xtratherm Safe-R SR/STP Phenolic Soffit Plus Board - (50mm Phenolic + 6mm Building Panel)

2400x1200mm - 2.88m2  Delivery Time: 2 - 3 days

A1-4589

56mm Xtratherm Safe-R SR/CW Phenolic Soffit Plus Board (50mm Phenolic + 6mm Building Panel) is a foam board is a superior performance ceiling insulation board with enhanced fire performance, consisting of a Class O phenolic foam core with negligible smoke obscuration. Safe-R SR/STP phenoli..

A1-4589
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59mm Insulated Render Panel - 50mm Kingspan Kooltherm K5 Bonded to 9mm OSB  - 2400mm x 1200mm

59mm Insulated Render Panel - 50mm Kingspan Kooltherm K5 Bonded to 9mm OSB - 2400mm x 1200mm

2400x1200 - 2.88m2  Delivery Time: 1 - 5 working days

A1-4315

59mm Thermal Render Panel is a composite board consists of a 9mm OSB board bonded to a 50mm Kooltherm K5 phenolic foam core that can take the render. The Thermal Render Board provides a high level of thermal insulation, render board and a quicker construction saving money and time. It also save..

A1-4315
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Single Board 20mm Kooltherm K5 External Wall Insulation Board Kingspan - 1200mm x 400mm

Single Board 20mm Kooltherm K5 External Wall Insulation Board Kingspan - 1200mm x 400mm

1200x400 - 0.48 m2  Delivery Time: 3 - 5 days

A1-4241

20mm Kingspan Kooltherm K5 External Wall Insulation Board is the external wall insulation comprising a premium performance rigid thermoset phenolic insulation core faced on both sides with a glass tissue based facing auto-adhesively bonded to the insulation core during manufacture. The pro..

A1-4241
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other thicknesses
Single Board 32.5mm Kingspan Kooltherm K118 Insulated Plasterboard (20mm phenolic insulation + 12.5mm plasterboard)

Single Board 32.5mm Kingspan Kooltherm K118 Insulated Plasterboard (20mm phenolic insulation + 12.5mm plasterboard)

2400x1200mm - 2.88m2  Delivery Time: 3 - 5 days

Guide Price: £62.89 (£75.47 inc VAT)

£21.84/m2 (£26.21/m2 inc VAT)

A1-3801

Single Board 32.5mm Kingspan Kooltherm K118 Insulated Plasterboard is a premium performance, lower lambda internal wall insulation, with a fibre-free rigid thermoset phenolic core. It has a 12.5mm plasterboard bonded to its front surface and a composite foil based facing on its reverse surface...

Guide Price: £62.89 (£75.47 inc VAT)

£21.84/m2 (£26.21/m2 inc VAT)

A1-3801
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other thicknesses
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