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40mm Insulation

40mm insulation is a slim insulation material suitable for application in ceilings, floors, roofs and walls where space may be limited. It has exceptional thermal conductivity, serving as a supportive insulative material in cold and warm temperatures. What's more, 40mm thick insulation is made from a vast range of materials, not limited to foil, mineral wool, wood fibre and PIR to suit different needs for the building. 

In addition to thermal insulation, some 40mm insulation solutions feature acoustic insulation benefits and fire protection for further support. Couple that with the different dimensions available, and you have lots to choose from to suit specific project requirements. If you're unsure about the insulation you need, you can speak to our excellent customer service team for advice and a no-obligation free quote. We'll ensure to provide UK fast delivery to maintain reliable support. 

Looking for a specific type of insulation material? We also stock:

Want to learn more about various insulation thicknesses? Check out our handy advice guides below:

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Showing 1 - 36 of 58 products

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Multi-layer Thermal Foil Roofing Insulation YBS SuperQuilt - 1.5m x 10m Roll

Multi-layer Thermal Foil Roofing Insulation YBS SuperQuilt - 1.5m x 10m Roll

IYSQ1410

SKU

IYSQ1410

£138.00 Incl. VAT
£0.00 Incl. VAT
Celotex TB4040 General Purpose PIR Insulation Board - 2400 X 1200 X 40mm

Celotex TB4040 General Purpose PIR Insulation Board - 2400 X 1200 X 40mm

TB4040

SKU

TB4040

£20.40 Incl. VAT
£0.00 Incl. VAT
YBS BreatherQuilt Pitched Roofing Foil Insulation Roll - 1.2m x 10m

YBS BreatherQuilt Pitched Roofing Foil Insulation Roll - 1.2m x 10m

BREATHERQUILT 001

SKU

BREATHERQUILT 001

£114.00 Incl. VAT
£0.00 Incl. VAT
EcoTherm Eco-Versal PIR Insulation Board - 2.4m x 1.2m x 40mm

EcoTherm Eco-Versal PIR Insulation Board - 2.4m x 1.2m x 40mm

PR40

SKU

PR40

£22.20 Incl. VAT
£0.00 Incl. VAT
Danopren TR40 XPS 40mm Insulation Board - 7.5m2 Pack

Danopren TR40 XPS 40mm Insulation Board - 7.5m2 Pack

484003

SKU

484003

£49.57 Incl. VAT
£0.00 Incl. VAT
Steico Therm Woodfibre Internal Insulation Board - 1350 x 600 x 40mm

Steico Therm Woodfibre Internal Insulation Board - 1350 x 600 x 40mm

STEICO-THERM-40

SKU

STEICO-THERM-40

£10.76 Incl. VAT
£0.00 Incl. VAT
Steico Flex Woodfibre Insulation 40mm - 6.843m2 Pack

Steico Flex Woodfibre Insulation 40mm - 6.843m2 Pack

STEICO-FLEX-40

SKU

STEICO-FLEX-40

£56.00 Incl. VAT
£0.00 Incl. VAT
Steico Duo Dryboard Woodfibre Internal/External Render Board - 2230 x 600 x 40mm

Steico Duo Dryboard Woodfibre Internal/External Render Board - 2230 x 600 x 40mm

STEICO-PRO-40

SKU

STEICO-PRO-40

£25.74 Incl. VAT
£0.00 Incl. VAT
YBS SuperQuilt Trade Multi-layer Thermal Foil Insulation - 1.5m x 10m Roll

YBS SuperQuilt Trade Multi-layer Thermal Foil Insulation - 1.5m x 10m Roll

SQ TR BRI 1500 X 10

SKU

SQ TR BRI 1500 X 10

£138.00 Incl. VAT
£0.00 Incl. VAT
Breathable Thermal Insulation SF19BB by SuperFOIL - 1.5m x 10m Roll

Breathable Thermal Insulation SF19BB by SuperFOIL - 1.5m x 10m Roll

SF19BB-15

SKU

SF19BB-15

£180.00 Incl. VAT
£0.00 Incl. VAT
Kingspan Kooltherm K103 Insulation Board 2400mm x 1200mm x 40mm - Pack of 8 Sheets

Kingspan Kooltherm K103 Insulation Board 2400mm x 1200mm x 40mm - Pack of 8 Sheets

10532895

SKU

10532895

£444.00 Incl. VAT
£0.00 Incl. VAT
JCW Acoustic Reflecta Wall Panel & Velcro Fixing - 1200 x 2400 x 40mm

JCW Acoustic Reflecta Wall Panel & Velcro Fixing - 1200 x 2400 x 40mm

JCW-REFLECTA-V-12002400

SKU

JCW-REFLECTA-V-12002400

£234.00 Incl. VAT
£0.00 Incl. VAT
JCW Acoustic Reflecta Wall Panel & Velcro Fixing - 1200 x 2000 x 40mm

JCW Acoustic Reflecta Wall Panel & Velcro Fixing - 1200 x 2000 x 40mm

JCW-REFLECTA-V-12002000

SKU

JCW-REFLECTA-V-12002000

£210.00 Incl. VAT
£0.00 Incl. VAT
Kingspan Thermapitch TP10 PIR Insulation Board 2400 X 1200 X 40mm - Pack of 8 Sheets

Kingspan Thermapitch TP10 PIR Insulation Board 2400 X 1200 X 40mm - Pack of 8 Sheets

K/UF40

SKU

K/UF40

£206.40 Incl. VAT
£0.00 Incl. VAT
JCW Acoustic Reflecta Wall Panel & Picture Hook Fixing - 600 x 2400 x 40mm

JCW Acoustic Reflecta Wall Panel & Picture Hook Fixing - 600 x 2400 x 40mm

JCW-REFLECTA-H-6002400

SKU

JCW-REFLECTA-H-6002400

£126.00 Incl. VAT
£0.00 Incl. VAT
JCW Acoustic Vertical Ceiling Baffle - 600 x 600 x 40mm

JCW Acoustic Vertical Ceiling Baffle - 600 x 600 x 40mm

JCW-BAFFLE-V-600600

SKU

JCW-BAFFLE-V-600600

£56.40 Incl. VAT
£0.00 Incl. VAT
IKO Enertherm ALU 40mm Universal Rigid Insulation Board 1200 x 2400mm

IKO Enertherm ALU 40mm Universal Rigid Insulation Board 1200 x 2400mm

31028040

SKU

31028040

£36.00 Incl. VAT
£0.00 Incl. VAT
Kingspan Greenguard GG300 XPS Insulation Board - 1250mm x 600mm x 40mm - Pack of 10 Sheets

Kingspan Greenguard GG300 XPS Insulation Board - 1250mm x 600mm x 40mm - Pack of 10 Sheets

GG300R40

SKU

GG300R40

£64.80 Incl. VAT
£0.00 Incl. VAT
JCW Acoustic Reflecta Wall Panel & Velcro Fixing - 600 x 600 x 40mm

JCW Acoustic Reflecta Wall Panel & Velcro Fixing - 600 x 600 x 40mm

JCW-REFLECTA-V-600600

SKU

JCW-REFLECTA-V-600600

£39.00 Incl. VAT
£0.00 Incl. VAT
SuperFOIL SF19 FR Fire Rated Multifoil Insulation 1.5m x 10m

SuperFOIL SF19 FR Fire Rated Multifoil Insulation 1.5m x 10m

SF19FR-15

SKU

SF19FR-15

£174.00 Incl. VAT
£0.00 Incl. VAT
JCW Acoustic Horizontal Ceiling Baffle - 600 x 600 x 40mm

JCW Acoustic Horizontal Ceiling Baffle - 600 x 600 x 40mm

JCW-BAFFLE-H-600600

SKU

JCW-BAFFLE-H-600600

£66.00 Incl. VAT
£0.00 Incl. VAT
Mannok PIR Insulation Board - 2400mm x 1200mm x 40mm

Mannok PIR Insulation Board - 2400mm x 1200mm x 40mm

Q/UF040

SKU

Q/UF040

£27.60 Incl. VAT
£0.00 Incl. VAT
Breathable Thermal Insulation SF19BB by SuperFOIL - 1.2m x 10m Roll

Breathable Thermal Insulation SF19BB by SuperFOIL - 1.2m x 10m Roll

SF19BB-12

SKU

SF19BB-12

£144.00 Incl. VAT
£0.00 Incl. VAT
JCW Acoustic Reflecta Wall Panel & Picture Hook Fixing - 1200 x 600 x 40mm

JCW Acoustic Reflecta Wall Panel & Picture Hook Fixing - 1200 x 600 x 40mm

JCW-REFLECTA-H-1200600

SKU

JCW-REFLECTA-H-1200600

£62.40 Incl. VAT
£0.00 Incl. VAT
JACKOBOARD Plano Bathroom Insulation Board - 2.4m x 600mm x 40mm

JACKOBOARD Plano Bathroom Insulation Board - 2.4m x 600mm x 40mm

4509369

SKU

4509369

£50.40 Incl. VAT
£0.00 Incl. VAT
Kingspan Thermawall TW50 Cavity Wall Insulation - 1200mm x 450mm x 40mm - Pack of 12 Sheets

Kingspan Thermawall TW50 Cavity Wall Insulation - 1200mm x 450mm x 40mm - Pack of 12 Sheets

915725

SKU

915725

£68.40 Incl. VAT
£0.00 Incl. VAT
JCW Acoustic Reflecta Wall Panel & Velcro Fixing - 1200 x 600 x 40mm

JCW Acoustic Reflecta Wall Panel & Velcro Fixing - 1200 x 600 x 40mm

JCW-REFLECTA-V-1200600

SKU

JCW-REFLECTA-V-1200600

£75.00 Incl. VAT
£0.00 Incl. VAT
Celotex 40mm Cavity Wall Insulation Board CW4040 1.2m x 450mm - 7.56m2 Pack

Celotex 40mm Cavity Wall Insulation Board CW4040 1.2m x 450mm - 7.56m2 Pack

CW4040

SKU

CW4040

£70.80 Incl. VAT
£0.00 Incl. VAT
JACKOBOARD Plano Bathroom Insulation Board - 1.2m x 600mm x 40mm

JACKOBOARD Plano Bathroom Insulation Board - 1.2m x 600mm x 40mm

4509365

SKU

4509365

£25.20 Incl. VAT
£0.00 Incl. VAT
Unilin Xtratherm PIR Insulation Board - 2400mm x 1200mm x 40mm

Unilin Xtratherm PIR Insulation Board - 2400mm x 1200mm x 40mm

XT/PR-40

SKU

XT/PR-40

£23.66 Incl. VAT
£0.00 Incl. VAT
JCW Acoustic Horizontal Ceiling Baffle - 1200 x 1000 x 40mm

JCW Acoustic Horizontal Ceiling Baffle - 1200 x 1000 x 40mm

JCW-BAFFLE-H-12001000

SKU

JCW-BAFFLE-H-12001000

£126.00 Incl. VAT
£0.00 Incl. VAT
JCW Acoustic Horizontal Ceiling Baffle - 1200 x 1200 x 40mm

JCW Acoustic Horizontal Ceiling Baffle - 1200 x 1200 x 40mm

JCW-BAFFLE-H-12001200

SKU

JCW-BAFFLE-H-12001200

£150.00 Incl. VAT
£0.00 Incl. VAT
JCW Acoustic Horizontal Ceiling Baffle - 1200 x 1500 x 40mm

JCW Acoustic Horizontal Ceiling Baffle - 1200 x 1500 x 40mm

JCW-BAFFLE-H-12001500

SKU

JCW-BAFFLE-H-12001500

£162.00 Incl. VAT
£0.00 Incl. VAT
JCW Acoustic Horizontal Ceiling Baffle - 1200 x 1800 x 40mm

JCW Acoustic Horizontal Ceiling Baffle - 1200 x 1800 x 40mm

JCW-BAFFLE-H-12001800

SKU

JCW-BAFFLE-H-12001800

£234.00 Incl. VAT
£0.00 Incl. VAT

Showing 1-36 of 58