PIR (polyisocyanurate) Boards
Polyisocyanurate (PIR) is one of the most efficient insulation material used in construction. This product is an improvement of previously used PUR boards (polyurethane), typically produced as a foam and used as rigid thermal insulation. This type of insulation offer many advantages when compared with other traditional insulating materials, and over its useful life will save 80 times more energy than was used to make it. Most popular type of PIR insulation board comprises a rigid PIR insulation core sandwiched between two high performance aluminium foil facings to create a tough, durable, light weight insulation board that performs whilst reducing the overall cost to build.

There are also other types of PIR insuation boards, for example, for flat roofs it can have plywood bonded on one side, or glass tissue or plasterboard bonded to it for wall applications. The need to replace the insulation is highly unlikely due to its rigidity, durability and excellent compressive strength. PIR insulation boards require approximately half the thickness of traditional forms of insulation to meet the same level of thermal performance. They achieve low R-values, as low as just 0.021W/mK. It is seen as greatest potential for energy saving today. PIR insulation boards will not rot, sag or decay and will therefore continue to deliver designed insulation values throughout the lifetime of the building.
The insulation core and facings resist attack by mould and microbial growth. They have a fibre free insulation core, and therefore are non-irritant. It is an environment friendly material. Its low weight also lends itself to modern methods of construction and lighter supporting structures. They are easy to handle and transport, making installation much easier and quicker than traditional insulants.
- Foil faced PIR boards
- Cavity PIR boards (partial fill and full fill)
- Mineral coated glass faced or bonded to plywood PIR boards (flat roof)
- Floor, walls and roof insulation
- Flat and pitched roofs,
- Floors,
- Walls,
- Cavity insulation.
PIR insulation board with core sandwiched between two aluminium foil facings
These insulation boards are available in different thicknesses, 12mm-150mm, all especially designed to eliminate thermal bridges, very easy to cut and shape and energy-efficient. They are used for insulated sheathing on timber frame, insulated sheathing on steel frame, insulation between studs on timber frame wall, external masonry with timber frame or ventilated cladding with timber frame, for pitched and flat roofs and floors. They are unaffected by air infiltration, resistant to the passage of water vapour, easy to handle and install and ideal for new build or refurbishment.
PIR insulation bonded to plasterboard
These insulation boards can be installed relatively quickly, in direct bonding and mechanically fixed installation techniques, can be used for both new construction projects as well as refurbishment projects or upgrading to applicable regulation standards. It is used in solid masonry walls or timber frame lining applications and also as the bottom layer of insulation in between and under rafter and joist applications. Available in 25mm-60mm thicknesses,
PIR insulation bonded to plywood
This type of insulation is used for insulation of timber deck flat roofs, it has high performance rigid thermoset insulation, vapor control layer and decking in one board, with proven reputation as a quality composite roof deck material.
PIR insulation bonded with OSB board
These insulation boards are used as decking and as thermal insulation for new and refurbishment flat roof applications. It is suitable for use in damp environment as it does not readily absorb water. The low thermal conductivity of the insulation minimizes the board thickness. The composite board offers rapid coverage and straightforward installation.
PIR insulation coated with mineral glass
These insulation boards have mineral coated glass facers and are suitable for use below single ply fully adhered roof membranes, single ply waterproofing systems and partially bonded built-up felt. They are suitable for use on roof decks that are subject to maintenance traffic. The product is stable, rot proof and will remain effective for the life span of the building, depending on specification and installation.
R-value Comparison Chart for PIR Insulation products available at Insulation Shop
Legenda
1* Celotex FI5000 Insulation Board, Celotex FR5000 Fire Resistant Insulation Board, Xtratherm Thin-R Full Fill Cavity Wall Insulation, Xtratherm XtroLiner Insulation Board, Celotex CF5000 Cavity Full fill Insulation Board
2* Celotex TB4000 Insulation Board, Celotex GA4000 Insulation Board, Celotex XR4000 Insulation Board, Celotex CW4000 Insulation Board, Celotex Crown-Bond Flat Roof Insulation Board, Celotex Crown-Fix Flat Roof Insulation Board, Celotex Crown-Up Flat Roof Insulation Board, Kingspan Thermawall TW55 Wall Insulation Board, Kingspan Thermapitch TP10 Pitched Roof Insulation Board, Kingspan Thermaroof TR26 Insulation Board, Xtratherm Thin-R Insulation Board, Xtratherm Thin-R XT/CW Partial Fill Cavity Wall Insulation, Xtratherm Thin-R Hyfloor Insulation Board, Recticel Eurothane GP Insulation Board, EcoTherm EcoVersal Insulation Board, Celotex PL4000 Insulated Plasterboard, Kingspan Thermaroof TR31 bonded to Plywood, Xtratherm Plydeck bonded to OSB, Xtratherm Thin-R Thermal Liner - Mech Fix, Dot & Dab, Gyproc Thermaline Insulated Plasterboard, Gyproc Thermaline MR Insulated Plasterboard, Recticel Plylok Flat Roof Insulation bonded to Plywood, EcoTherm EcoLiner Insulated Plasterboard, EcoTherm Eco-Deck - Insulated Flat Roof Decking
3* Kingspan Thermafloor TF70 Insulation Board
4* Kingspan Thermaroof TR24 Insulation Board, Kingspan Thermaroof TR27 Insulation Board, Xtratherm Flat Roof Board FR-MG, Xtratherm Flat Roof Board FR-BGM
Here at Insulation Shop you can find a various types and sizes of PIR insulation boards, produced by leading manufacturers, such as Celotex, Kingspan, British Gypsum, Xtratherm, EcoTherm, Recticel, Knauf.
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27.5mm Celotex PL4015 - 15mm PIR Insulation Bonded to 12.5mm Plasterboard (PL4000)
1200x2400 - 2.88m2 show quantity discountsDelivery Time: 1 - 5 working days
Guide Price: £54.93 (£65.92 inc VAT)
£19.07/m2 (£22.88/m2 inc VAT)
show quantity discountsCelotex PL4015 is a high performance thermal insulation board where the 15mm PIR insulation is bonded to 12.5mm tapered edge plasterboard. PL4015 is manufactured from rigid polyisocyanurate (PIR) using a blend of blowing agents that have zero ozone depletion potential (zero ODP) and low global ..
20mm Kingspan Thermapitch TP10 Pitched Warm Roof Insulation Board
TP10 1200x2400 show quantity discountsDelivery Time: 3 - 4 days
£32.20 (£38.64 inc VAT)
£11.18/m2 (£13.42/m2 inc VAT)
show quantity discounts20mm Kingspan Thermapitch TP10 is the rafter level insulation comprising of a high performance rigid thermoset insulation core faced on both sides with a low emissivity composite foil facing. The product is manufactured with a blowing agent that has zero Ozone Depletion Potential..
25mm Thermawall TW50 PIR Cavity Wall Insulation Board (pack of 20)
TW50 - 1200x450 - 10.8m2 show quantity discountsDelivery Time: 1 - 5 working days
Guide Price: £112.60 (£135.12 inc VAT)
£10.43/m2 (£12.52/m2 inc VAT)
show quantity discounts25mm Kingspan Thermapitch TW50 comprises of a high performance rigid thermoset insulation core faced on both sides with a low emissivity composite foil facing. The product is manufactured with a blowing agent that has zero Ozone Depletion Potential (ODP) and low Global Warming Potential&nb..
20mm Thermawall TW55 PIR Insulation Board Kingspan
TW55 - 1200x2400 show quantity discountsDelivery Time: 1 - 5 working days
£32.20 (£38.64 inc VAT)
£11.18/m2 (£13.42/m2 inc VAT)
show quantity discounts20mm Kingspan Thermawall TW55 is a stud wall PIR insulation board comprising a high performance rigid thermoset insulation core faced on both sides with a low emissivity composite foil facing. The product is manufactured with a blowing agent that has zero Ozone Depletion Potential (ODP) and low Glob..
20mm Thermafloor TF70 PIR Insulation Board Kingspan
TF70 - 1200x2400 show quantity discountsDelivery Time: 1 - 5 working days
£32.20 (£38.64 inc VAT)
£11.18/m2 (£13.42/m2 inc VAT)
show quantity discounts20mm Kingspan TF70 comprises a high performance rigid thermoset insulation core faced on both sides with a low emissivity composite foil facing. The product is manufactured with a blowing agent that has zero Ozone Depletion Potential(ODP) and low Global Warming Potential (GWP).CHARACT..
25mm Kingspan Thermaroof TR26 (pack of 12)
2400x1200mm - 34.56m2 show quantity discountsDelivery Time: 3 - 5 days
Guide Price: £420.45 (£504.54 inc VAT)
£12.17/m2 (£14.60/m2 inc VAT)
show quantity discounts25mm Kingspan Thermaroof TR26 is a high performance, fibre free, rigid thermoset PIR insulation core faced on both sides with a low emissivity composite foil facing which is used for insulating flat roofs and is fully compatible with most mechanically fixed single ply waterproofing systems and ..
25mm Kingspan Thermaroof TR27 (pack of 12)
25mm TR27 - 8.64m2 show quantity discountsDelivery Time: 3 - 5 days
Guide Price: £101.65 (£121.98 inc VAT)
£11.77/m2 (£14.12/m2 inc VAT)
show quantity discounts25mm Kingspan Thermaroof TR27 is a PIR insulation board made from highly effective rigid PIR core faced with coated glass tissue on both sides added during manufacturing. The product offers substantial durability and long life span depending on the condition of the supporting structure. Th..
35mm Xtratherm Thin-R XT/CW Partial Fill Cavity Insulation (pack of 9)
1200x450mm - 4.86m2 show quantity discountsDelivery Time: 2 - 4 days
Guide Price: £44.31 (£53.17 inc VAT)
£9.12/m2 (£10.94/m2 inc VAT)
show quantity discountsXtratherm ThinR XT/CW Partial Fill Cavity Wall Insulation is the best solution when designers or regulations demand additional thermal insulation in external masonry walls, without a substantial increase in the width of the cavity. Xtratherm Thin-R boards achieve high standards of insulation wh..
75mm Thin-R CT/PIR Cavity Therm Full Fill Insulation Xtratherm (pack of 4)
CT/PIR 1200x450 - 2.16m2 show quantity discountsDelivery Time: 2 - 3 days
Guide Price: £66.32 (£79.58 inc VAT)
£30.70/m2 (£36.84/m2 inc VAT)
show quantity discounts75mm Xtratherm CavityTherm wall insulation board is a high performance composite board of enhanced PIR core with a lambda value of 0.021W/mK. The boards have gas tight facings with one face bonded to a profiled HIPS skin during manufacture to provide a drainage plane. CavityTherms unique engineered ..
59mm Plydeck Xtratherm (PIR with OSB Board) - 50mm PIR + 9mm OSB Board
2400x1200 - 2.88m2 show quantity discountsDelivery Time: 1 - 5 working days
Guide Price: £77.01 (£92.41 inc VAT)
£26.74/m2 (£32.09/m2 inc VAT)
show quantity discountsXtratherm Plydeck is a composite insulated panel of 50mm Xtratherm Polyisocyanurate core with a composite foil face, bonded to 9mm OSB board. The Xtratherm Plydeck provides a high level of thermal insulation and decking in one application.APPLICATIONPlydeck is designed to provide high levels of ther..
50mm Xtratherm Flat Roof Board FR-MG (pack of 10)
1200x600mm - 7.2m2 show quantity discountsDelivery Time: 1 - 2 days
Guide Price: £114.35 (£137.22 inc VAT)
£15.88/m2 (£19.06/m2 inc VAT)
show quantity discountsXtratherm FR-MG is a mineral coated glass faced board. Xtratherm XT/FR MG boards should be laid over the vapour control layer in a break bonded pattern. The long edges of the boards should be laid at right angles to the direction of the substrate and all edges must be fully supported by the deck. Th..
24.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF - Mech Fix (15mm PIR Insulation bonded to 9.5mm Plasterboard)
1200x2400 (2.88m2) show quantity discountsDelivery Time: 1 - 5 working days
Guide Price: £50.48 (£60.58 inc VAT)
£17.53/m2 (£21.04/m2 inc VAT)
show quantity discounts24.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF is a composite insulated panel of 15mm Xtratherm Polyiso (PIR) core with foil faces bonded to 9.5mm tapered edge plasterboard for mechanically fixing to internal walls. XT/TL-MF is designed to provide high levels of thermal insulation and dry ..
27.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF - Mech Fix (15mm PIR Insulation bonded to 12.5mm Plasterboard)
1200x2400 (2.88m2) show quantity discountsDelivery Time: 1 - 5 working days
Guide Price: £50.48 (£60.58 inc VAT)
£17.53/m2 (£21.04/m2 inc VAT)
show quantity discounts27.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF is a composite insulated panel of 15mm Xtratherm Polyiso (PIR) core with foil faces bonded to 12.5mm tapered edge plasterboard for mechanically fixing to internal walls. XT/TL-MF is designed to provide high levels of thermal insulation and dry..
24.5mm Xtratherm XT/TL Thermal Liner Dot and Dab (15mm PIR Insulation bonded to 9.5mm Plasterboard)
1200x2400 - 2.88m2 show quantity discountsDelivery Time: 1 - 5 working days
Guide Price: £57.71 (£69.25 inc VAT)
£20.04/m2 (£24.05/m2 inc VAT)
show quantity discounts24.5mm Xtratherm XT/TL Thermal Liner Dot and Dab Insulated Plasterboard is a high performance rigid insulation board made from 15mm Xtratherm PIR core faced with composite kraft paper bonded to tapered edge 9.5mm plasterboard, specially designed for internal walls dry lining and insulation..
27.5mm Xtratherm XT/TL Thermal Liner Dot and Dab (15mm PIR Insulation bonded to 12.5mm Plasterboard)
1200x2400 - 2.88m2 show quantity discountsDelivery Time: 1 - 5 working days
Guide Price: £57.71 (£69.25 inc VAT)
£20.04/m2 (£24.05/m2 inc VAT)
show quantity discounts27.5mm Xtratherm XT/TL Thermal Liner Dot and Dab Insulated Plasterboard is a high performance rigid insulation board made from 15mm Xtratherm PIR core faced with composite kraft paper bonded to 12.5mm plasterboard, specially designed for internal walls dry lining and insulation, due to its..
25mm Xtratherm XtroLiner XO/PR Pitched Roof PIR Insulation Board Fire Rated - Pack of 12
1200x2400mm - 34.56m2 Delivery Time: 1 - 5 working days
25mm XtroLiner XO/PR board has a core of modified polyisocyanurate (PIR) bonded to low emissivity textured aluminium foil facings. It offers excellent insulation performance with thermal conductivity of 0.021 W/mK and a Class O fire rating. XtroLiner XO/PR is CFC & HCFC free and is manufactured ..
75mm Xtratherm Thin-R Hyfloor XT/HYF Under Floor PIR Insulation Board - Pack of 4
1200x2400mm - 11.52m2 Delivery Time: 1 - 5 working days
75mm Xtratherm Thin-R Hyfloor XT/HYF is a high performance floor Insulation board with superior thickness to performance ratio allowing the lower targets required under the new Building Regulations to be achieved with minimum thicknesses. Xtratherm Thin-R Hyfloor XT/HYF is a high performance fo..
38mm British Gypsum Gyproc Thermaline PIR Insulated Plasterboard - (25.5mm PIR + 12.5mm Gyproc WallBoard)
PIR - 38mm Delivery Time: 1 - 5 working days
£85.40 (£102.48 inc VAT)
£29.65/m2 (£35.58/m2 inc VAT)
38mm Gyproc Thermaline PIR Insulated Plasterboard consists of a 12.5mm Gyproc WallBoard factory bonded to a 25.5mm rigid polyisocyanurate foam (PIR) with a multi-layer Kraft/aluminium facer on both sides of the insulation board and conforms to BS EN 13950. Gyproc ThermaLine ..
38mm British Gypsum Gyproc Thermaline PIR MR Insulated Plasterboard - (25.5mm PIR + 12.5mm Gyproc MR WallBoard)
PIR MR - 38mm Delivery Time: 1 - 5 working days
Guide Price: £84.69 (£101.63 inc VAT)
£29.41/m2 (£35.29/m2 inc VAT)
38mm Gyproc Thermaline PIR MR Insulated Plasterboard consists of a 12.5mm Gyproc Moisture Resistant Board factory bonded to a 25.5mm rigid polyisocyanurate foam (PIR) with a multi-layer Kraft/aluminium facer on both sides of the insulation board and conforms to BS EN 13950. ..
25mm Eurothane GP PIR Insulation Board Recticel
GP1200x2400 - 2.88m2 show quantity discountsDelivery Time: 1 - 5 working days
£19.98 (£23.98 inc VAT)
£6.94/m2 (£8.33/m2 inc VAT)
show quantity discounts25mm Eurothane GP comprising a rigid polyisocyanurate (PIR) core faced on both sides with a gas tight multilayer composite aluminium foil facing is the ideal choice for pitched roof, floor or framed wall applications. With a low thermal conductivity value (0.022 W/mK) providing an excellent the..
96mm Recticel Plylok PIR Flat Roof Insulation Board - 90mm PIR + 6mm Plywood Sheet
1200x2400mm - 2.88m2 show quantity discountsDelivery Time: 1 - 5 working days
Guide Price: £131.60 (£157.92 inc VAT)
£45.69/m2 (£54.83/m2 inc VAT)
show quantity discounts96mm Recticel Plylok PIR Flat Roof Insulation Board is a rigid PIR board consisted of a few bonded elements contributing to its thermal performance and rigidity. The closed cell rigid 90mm PIR foam core is faced on both sides with multi-layer aluminium foil and bonded to 6mm WBP plywood. It is ..
37.5mm EcoTherm EcoLiner PIR Insulated Plasterboard
2400x1200mm - 2.88m2 show quantity discountsDelivery Time: 1 - 5 working days
£64.57 (£77.48 inc VAT)
£22.42/m2 (£26.90/m2 inc VAT)
show quantity discounts37.5mm EcoTherm EcoLiner is a range of thermal laminate boards designed for both new build and refurbishment projects, applicable for internal wall insulation and drylining, but also pitched, cold and room-in-roof applications. It is consisted of paper backed PIR insulation core bonded to ..
25mm EcoTherm EcoVersal PIR Insulation Board
1200x2400mm - 2.88m2 show quantity discountsDelivery Time: 1 - 5 working days
£26.34 (£31.61 inc VAT)
£9.15/m2 (£10.98/m2 inc VAT)
show quantity discounts25mm Eco-Versal is a foil faced universal solution for insulating walls, floors, pitched roofs, dormer cheeks and ceilings. It is ideal for insulating timber frame walls and can also be used to insulate solid walls internally. EcoTherm Eco-Versal comprises a fibre free rigid polyisocyanurate (PIR) i..
96mm EcoTherm Eco-Deck - Insulated Flat Roof Decking
1200x2400mm - 2.88m2 show quantity discountsDelivery Time: 2 - 3 days
Guide Price: £114.09 (£136.91 inc VAT)
£39.61/m2 (£47.53/m2 inc VAT)
show quantity discounts96mm EcoTherm Eco-Deck is a tough, structural, pre-insulated thermal composite board for flat roofs. It comprises a 90mm thick fibre free polyisocyanurate (PIR) insulation core faced with 6mm thick tough, exterior grade plywood and is ready to fix and finish using basic tools and traditional roofing..
15mm Xtratherm PIR Rigid Insulation Board - 1200mm x 1200mm
1200mm x 1200mm - 1.44m2 Delivery Time: 1 - 5 working days
Guide Price: £10.35 (£12.42 inc VAT)
£7.19/m2 (£8.63/m2 inc VAT)
15mm Xtratherm Thin-r is a foil faced Polyisocyanurate (PIR) insulation board formed by a blowing process which generates rigid foam composed of fine cells filled with Pentane blowing agent trapped within the foam. Pentane has very good insulating properties and gives Thin-r superb insulating capabi..
25mm Flat Roof Insulation Board Xtratherm FR-BGM (pack of 18)
1200x600mm - 12.96m2 Delivery Time: 3 - 5 days
25mm Xtratherm FR-BGM is a PIR insulation board that is faced with a fleece finished bitumen/glass facers and is suitable for use below partially bonded bitumen based built up roofing systems. FR-BGM is suitable to apply torch on felt directly on the insulation. FR-BGM can also be used in mecha..
25mm Recticel Powerdeck F PIR Insulation Board for Bonded Warm Roof Systems - pack of 20
600x1200 - 14.40m2 Delivery Time: 4 - 5 weeks
25mm Recticel Powerdeck F is a durable, high strength PIR insulation board for built-up felt, mastic asphalt and single-ply membrane waterproofing systems. It has a PIR core faced on both sides with a gas tight alkali resistant facing - perforated mineral coated glass fibre tissue to both sides. It ..
25mm Xtratherm Thin-R FR/ALU Flat Roof PIR Insulation Board (pack of 12)
2400x1200mm - 34.56m2 Delivery Time: 2 - 3 days
25mm Xtratherm Thin-R FR/ALU Flat Roof PIR Insulation Board is a flat roof insulation with enhanced vapour resistant performance. Thin-R FR/ALU board is faced with low emissivity aluminium facings both sides. Rot proof and will remain effective for the life span of the building. Suitable for us..
30mm Recticel Powerdeck U PIR Insulation Board for Flat Roof Hot Applied Systems - pack of 16
600x1200 - 11.52m2 Delivery Time: 1 - 5 working days
30mm Recticel Powerdeck U is a high performance, rigid PIR board for use in warm flat roofs under torch-on with bituminous waterproofing systems for new build and refurbishment projects and in any bitumen compatible single-ply membrane system. It is core faced on both sides with a bituminous glass f..
37.5mm Speedline PIR Thermal Laminate Board - 25mm PIR + 12.5mm Plasterboard
2400x1200mm - 2.88m2 show quantity discountsDelivery Time: 1 - 5 working days
£43.14 (£51.77 inc VAT)
£14.98/m2 (£17.98/m2 inc VAT)
show quantity discounts37.5mm Speedline Thermal Laminate Board is a 2 in 1 solution -- dry lining and thermal insulation-- in one single application. This thermal laminate board comprises a 25mm PIR foam with a kraft paper/aluminium multilayer finish, factory bonded to a 12.5mm tapered edge plasterboard. The PIR foam has ..