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Phenolic Insulation Boards

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

CHOOSE MANUFACTURERS

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
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Brand: Kingspan Model and Size: 1200mm x 400mm - 8.64m2
Delivery Time: In Stock 1-2 working days
20mm Kingspan Kooltherm K5 External Wall Insulation Board is a premium performance external wall insulation board specifically designed for masonry walls. It features a rigid phenolic foam core, providing exceptional thermal insulation properties that help reduce energy consumption and enhance the o..
£134.75 (£161.70 inc VAT)
£129.70
£155.64 inc VAT
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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
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Brand: Kingspan Model and Size: 1200mm x 400m - 0.48 m2
Delivery Time: In Stock 1-2 working days
20mm Kingspan Kooltherm K5 External Wall Insulation Board is a premium performance external wall insulation board specifically designed for masonry walls. It features a rigid phenolic foam core, providing exceptional thermal insulation properties that help reduce energy consumption and enhance the o..
Guide Price: £9.80
£11.76 inc VAT
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Brand: Kingspan Model and Size: 1200mm x 600mm - 3.60m2
Delivery Time: 3 - 7 days
100mm Kingspan Kooltherm K5 External Wall Insulation Board is a premium performance external wall insulation board specifically designed for masonry walls. It features a rigid phenolic foam core, providing exceptional thermal insulation properties that help reduce energy consumption and enhance the ..
£138.20
£165.84 inc VAT
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50mm Kingspan Kooltherm K15 Rainscreen Board (pack of 6) 50mm Kingspan Kooltherm K15 Rainscreen Board (pack of 6)
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Brand: Kingspan Model and Size: 50mm K15 - 17.28m2
Delivery Time: 1 - 2 weeks
50mm Kingspan Kooltherm K15 Rainscreen Board is a premium performance insulation solution featuring a rigid thermoset fibre-free phenolic insulation core. This advanced core is designed to deliver exceptional thermal efficiency, making it an ideal choice for rainscreen applications. The board is fac..
Guide Price: £328.30
£393.96 inc VAT
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25mm Xtratherm Safe-R SR/PR Phenolic Insulation Board (pack of 12)
Guide Price
Brand: Xtratherm Model and Size: 2400x1200 - 34.56m2
Delivery Time: 2 - 3 working days
25mm Xtratherm Safe-R is an exceptional rigid insulation solution with enhanced fire performance. It features a Class O phenolic foam core that emits negligible smoke obscuration. The insulation is clad with low emissivity aluminium facings on both sides, achieving a remarkable thermal conductivity ..
Guide Price: £430.24
£516.29 inc VAT
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25mm Unilin Safe-R SR/PR Phenolic Insulation Board (pack of 12) - Pitched Roof Insulation - 2400mm x 1200mm
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Brand: Unilin (prev. Xtratherm) Model and Size: 2400mm x 1200mm - 34.56m2
Delivery Time: 2 - 3 working days
25mm Unilin Safe-R SR/PR Phenolic Foam Insulation Board is a superior performance rigid insulation for pitched roofs 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..
Guide Price: £430.24
£516.29 inc VAT
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Brand: Kingspan Model and Size: 1200mm x 2400mm - 34.56m2
Delivery Time: 3 - 5 days
25mm Kingspan Kooltherm K10 Soffit Insulation Board is a premium performance insulation solution specifically designed for soffit applications. It comprises a fibre-free rigid thermoset phenolic insulation core, which delivers exceptional thermal performance with a low thermal conductivity of just 0..
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Brand: Kingspan Model and Size: 2400x1200mm - 34.56m2
Delivery Time: 3 - 7 days
25mm Kingspan Kooltherm K103 Floorboard is a premium performance lower lambda insulation with a fibre-free rigid thermoset phenolic core. The board faced on both sides with a glass tissue based facing, autohesively bonded to the insulation core during manufacture. It used for insulating beam and blo..
£428.04
£513.65 inc VAT
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Brand: Kingspan Model and Size: 1200x450mm - 2.16m2
Delivery Time: 1-3 working days
90mm Kingspan Kooltherm K106 Cavity Board is a premium performance rigid thermoset fibre-free phenolic insulation core bonded to a water-tight, vapour-open polypropylene fleece and to a inner facing (adjacent to the inner leaf) of a low emissivity composite foil. It is specifically designed to limit..
£88.70
£106.44 inc VAT
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Brand: Kingspan Model and Size: 1200x450mm - 5.40 m2
Delivery Time: 3 - 5 days
50mm Kingspan Kooltherm K108 Cavity Board features a premium performance rigid thermoset fibre-free phenolic insulation core, which is faced on both sides with a low emissivity composite foil. This product is specifically engineered to minimise thermal bridging and uncontrolled air leakage at juncti..
£133.84
£160.61 inc VAT
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Brand: Kingspan Model and Size: 2400x1200 - 34.56m2
Delivery Time: Pre-Order
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. Its reflective, low emissivity surface improves the thermal resistance of an..
£467.68
£561.22 inc VAT
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65mm Kingspan Kooltherm K110 Soffit Insulation Board (pack of 4) - 2400mm x1200mm 65mm Kingspan Kooltherm K110 Soffit Insulation Board (pack of 4) - 2400mm x1200mm
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Brand: Kingspan Model and Size: 2400mm x1200mm - 11.52m2
Delivery Time: 7 - 10 days
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. CHARACTERISTICSSafe and easy to handle and instal..
Guide Price: £373.33
£448.00 inc VAT
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Brand: Kingspan Model and Size: 2400mm x 1200mm - 60.48m2
Delivery Time: 3 - 5 days
37.5mm 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..
£1,643.15
£1,971.78 inc VAT
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37.5mm Xtratherm Safe-R Thermal Liner SR/TB (25mm Phenolic Core and 12.5mm Plasterboard) - Dot and Dab (pack of 12)
Guide Price
Brand: Xtratherm Model and Size: 2400x1200 - 34.56m2
Delivery Time: 2 - 3 working days
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: £712.18
£854.62 inc VAT
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37.5mm Unilin Safe-R SR/TB (25mm Phenolic Core and 12.5mm Plasterboard) - Dot and Dab (pack of 12)
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Brand: Unilin (prev. Xtratherm) Model and Size: 2400x1200 - 34.56m2
Delivery Time: 2 - 3 working days
37.5mm Unilin Safe-R SR/TB is a composite insulated panel of of 25mm Unilin Phenolic core with a glass tissue facing, bonded to a 12.5mm tapered edge plasterboard for internal applications. Unilin Safe-R SR/TB composite insulation board is fixed with dot & dab adhesive bonding. It is designed to..
Guide Price: £712.18
£854.62 inc VAT
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37.5mm Xtratherm Safe-R Thermal Liner SR/TB-MF (25mm Phenolic Core and 12.5mm Plasterboard) -  Mechanical Fixing (pack of 12)
Guide Price
Brand: Xtratherm Model and Size: 2400x1200 - 34.56m2
Delivery Time: 2 - 3 working days
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: £731.58
£877.90 inc VAT
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37.5mm Unilin Safe-R SR/TB-MF (25mm Phenolic Core and 12.5mm Plasterboard) -  Mechanical Fixing (pack of 12)
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Brand: Unilin (prev. Xtratherm) Model and Size: 2400x1200 - 34.56m2
Delivery Time: 2 - 3 working days
37.5mm Unilin Safe-R SR/TB-MF is a composite insulated panel of 25mm Phenolic core with a composite foil facing bonded to a 12.5mm tapered edge plasterboard for internal applications, mechanically fixed. Unilin Safe-R SR/TB-MF is designed to provide high levels of thermal insulation and dry lining i..
Guide Price: £731.58
£877.90 inc VAT
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50mm Kingspan Kooltherm K112 Framing Board (pack of 6) 50mm Kingspan Kooltherm K112 Framing Board (pack of 6)
Guide Price
Brand: Kingspan Model and Size: 1200mm x 2400mm - 17.28m2
Delivery Time: 5 - 7 days
50mm Kingspan Kooltherm K112 Framing Board is a high-performance insulation solution designed specifically for use in framed buildings. This rigid phenolic foam board offers exceptional thermal performance, with a low thermal conductivity of just 0.019 W/m·K, making it one of the most efficient insu..
Guide Price: £575.58
£690.70 inc VAT
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Single Board 37.5mm Kingspan Kooltherm K118 Insulated Plasterboard (25mm phenolic insulation and 12.5mm plasterboard) Single Board 37.5mm Kingspan Kooltherm K118 Insulated Plasterboard (25mm phenolic insulation and 12.5mm plasterboard)
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Brand: Kingspan Model and Size: 2400mm x 1200mm - 2.88m2
Delivery Time: 3 - 5 days
37.5mm 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..
Guide Price: £78.24
£93.89 inc VAT
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Model and Size: 2400x1200 - 2.88m2
Delivery Time: 1 - 5 working days
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 saves the..
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Brand: Xtratherm Model and Size: 2400x1200mm - 34.56m2
Delivery Time: 2 - 3 working days
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 thermal conduct..
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Brand: Xtratherm Model and Size: 2400x1200mm - 17.28m2
Delivery Time: 2 - 3 working days
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 a thermal cond..
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Brand: Xtratherm Model and Size: 2400x1200mm - 17.28m2
Delivery Time: 2 - 3 working days
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 thermal co..
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Brand: Xtratherm Model and Size: 1200x450mm - 3.24m2
Delivery Time: 2 - 3 working days
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 both sides, a..
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Brand: Xtratherm Model and Size: 2400x1200mm - 2.88m2
Delivery Time: 2 - 3 working days
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 phenolic core is ..
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Brand: Unilin (prev. Xtratherm) Model and Size: 1200x450mm - 4.86m2
Delivery Time: 2 - 3 working days
50mm Unilin Safe-R SR/CW Phenolic Foam Insulation Board is a superior performance rigid partial fill cavity insulation board with enhanced fire performance, consisting of an Euroclass D-s1, d0 phenolic foam core with negligible smoke obscuration. Unilin Safe-R SR/CW is faced with low emissivity alum..
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Brand: Unilin (prev. Xtratherm) Model and Size: 2400x1200mm - 17.28m2
Delivery Time: 2 - 3 working days
50mm Unilin Safe-R SR/FB Phenolic foam is a superior performance rigid insulation framing board with enhanced fire performance, consisting of an Euroclass B-s1, d0 phenolic foam core with negligible smoke obscuration. Unilin Safe-R SR is faced with low emissivity aluminium facings both sides, and ha..
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Brand: Unilin (prev. Xtratherm) Model and Size: 2400x1200mm - 17.28m2
Delivery Time: 2 - 3 working days
50mm Unilin Safe-R SR/ST Phenolic foam is a superior performance rigid insulation soffit board with enhanced fire performance, consisting of a C-s1, d0 phenolic foam core with negligible smoke obscuration. Unilin Safe-R SR/ST is faced with low emissivity aluminium facings both sides, and has a therm..
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Brand: Unilin (prev. Xtratherm) Model and Size: 2400x1200mm - 2.88m2
Delivery Time: 2 - 3 working days
56mm Unilin Safe-R SR/STP Phenolic Soffit Plus Board (50mm Phenolic + 6mm Building Panel) is a superior performance ceiling insulation board with enhanced fire performance, consisting of an Euroclass B s1 d0 phenolic foam core with negligible smoke obscuration. Unilin Safe-R SR/STP phenolic core is ..
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Brand: Unilin (prev. Xtratherm) Model and Size: 2400x1200mm - 17.28m2
Delivery Time: 2 - 3 working days
50mm Unilin Safe-R SR/UF Phenolic foam is a superior performance rigid underfloor insulation with enhanced fire performance, consisting of an Euroclass D s1 d0 phenolic foam core with negligible smoke obscuration. Unilin Safe-R SR/UF is faced with low emissivity aluminium facings both..
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