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100mm Kingspan Therma TP10 / TF70 / TW55 PIR Insulation Board 2400mm x 1200mm (8′ x 4′) Pack of 3 (8.64m2)
All three models 100mm Kingspan Therma PIR Insulation Board:
- 100mm Thermapitch TP10
- 100mm Thermafloor TF70
- 100mm Thermawall TW55
share the same high-performance PIR core and low-emissivity foil facings, offering excellent thermal efficiency and easy installation. Although labeled differently, these boards share identical technical specifications.
£173.05£207.66 Ex VATInc VAT£20.03£24.04 Per M2 Add to cart -
120mm Kingspan Therma TP10 / TF70 / TW55 PIR Insulation Board 2400mm x 1200mm (8′ x 4′) Pack of 2 (5.76m2)
All three models 120mm Kingspan Therma PIR Insulation Board:
- 120mm Thermapitch TP10
- 120mm Thermafloor TF70
- 120mm Thermawall TW55
share the same high-performance PIR core and low-emissivity foil facings, offering excellent thermal efficiency and easy installation. Although labeled differently, these boards share identical technical specifications.
£138.57£166.28 Ex VATInc VAT£24.06£28.87 Per M2 Add to cart -
125mm Kingspan Therma TP10 / TF70 / TW55 PIR Insulation Board 2400mm x 1200mm (8′ x 4′) Pack of 2 (5.76m2)
All three models 20mm Kingspan Therma PIR Insulation Board:
- 125mm Thermapitch TP10
- 125mm Thermafloor TF70
- 125mm Thermawall TW55
share the same high-performance PIR core and low-emissivity foil facings, offering excellent thermal efficiency and easy installation. Although labeled differently, these boards share identical technical specifications.
£198.03£237.64 Ex VATInc VAT£34.38£41.26 Per M2 Add to cart -
140mm Kingspan Therma TP10 / TF70 / TW55 PIR Insulation Board 2400mm x 1200mm (8′ x 4′) Pack of 2 (5.76m2)
All three models 140mm Kingspan Therma PIR Insulation Board:
- 140mm Thermapitch TP10
- 140mm Thermafloor TF70
- 140mm Thermawall TW55
share the same high-performance PIR core and low-emissivity foil facings, offering excellent thermal efficiency and easy installation. Although labeled differently, these boards share identical technical specifications.
£173.30£207.96 Ex VATInc VAT£30.09£36.11 Per M2 Add to cart -
150mm Kingspan Therma TP10 / TF70 / TW55 PIR Insulation Board 2400mm x 1200mm (8′ x 4′) Pack of 2 (5.76m2)
All three models 150mm Kingspan Therma PIR Insulation Board:
- 150mm Thermapitch TP10
- 150mm Thermafloor TF70
- 150mm Thermawall TW55
share the same high-performance PIR core and low-emissivity foil facings, offering excellent thermal efficiency and easy installation. Although labeled differently, these boards share identical technical specifications.
£173.54£208.25 Ex VATInc VAT£30.13£36.16 Per M2 Add to cart -
25mm Kingspan Therma TP10 / TF70 / TW55 PIR Insulation Board 2400mm x 1200mm (8′ x 4′) Pack of 12 (34.56m2)
All three models 25mm Kingspan Therma PIR Insulation Board:
- 25mm Thermapitch TP10
- 25mm Thermafloor TF70
- 25mm Thermawall TW55
share the same high-performance PIR core and low-emissivity foil facings, offering excellent thermal efficiency and easy installation. Although labeled differently, these boards share identical technical specifications.
£264.91£317.89 Ex VATInc VAT£7.67£9.20 Per M2 Add to cart -
30mm Kingspan Therma TP10 / TF70 / TW55 PIR Insulation Board 2400mm x 1200mm (8′ x 4′) Pack of 10 (28.8m2)
All three models 30mm Kingspan Therma PIR Insulation Board:
- 30mm Thermapitch TP10
- 30mm Thermafloor TF70
- 30mm Thermawall TW55
share the same high-performance PIR core and low-emissivity foil facings, offering excellent thermal efficiency and easy installation. Although labeled differently, these boards share identical technical specifications.
£269.23£323.08 Ex VATInc VAT£9.35£11.22 Per M2 Add to cart -
40mm Kingspan Therma TP10 / TF70 / TW55 PIR Insulation Board 2400mm x 1200mm (8′ x 4′) Pack of 8 (23.04m2)
All three models 40mm Kingspan Therma PIR Insulation Board:
- 40mm Thermapitch TP10
- 40mm Thermafloor TF70
- 40mm Thermawall TW55
share the same high-performance PIR core and low-emissivity foil facings, offering excellent thermal efficiency and easy installation. Although labeled differently, these boards share identical technical specifications.
Non-refundable.
£262.88£315.46 Ex VATInc VAT£11.41£13.69 Per M2 Add to cart -
50mm Kingspan Therma TP10 / TF70 / TW55 PIR Insulation Board 2400mm x 1200mm (8′ x 4′) Pack of 6 (17.28m2)
All three models 50mm Kingspan Therma PIR Insulation Board:
- 50mm Thermapitch TP10
- 50mm Thermafloor TF70
- 50mm Thermawall TW55
share the same high-performance PIR core and low-emissivity foil facings, offering excellent thermal efficiency and easy installation. Although labeled differently, these boards share identical technical specifications.
£198.59£238.31 Ex VATInc VAT£11.49£13.79 Per M2 Add to cart -
60mm Kingspan Therma TP10 / TF70 / TW55 PIR Insulation Board 2400mm x 1200mm (8′ x 4′) Pack of 5 (14.40m2)
All three models 60mm Kingspan Therma PIR Insulation Board:
- 60mm Thermapitch TP10
- 60mm Thermafloor TF70
- 60mm Thermawall TW55
share the same high-performance PIR core and low-emissivity foil facings, offering excellent thermal efficiency and easy installation. Although labeled differently, these boards share identical technical specifications.
£205.54£246.65 Ex VATInc VAT£14.27£17.12 Per M2 Add to cart -
70mm Kingspan Therma TP10 / TF70 / TW55 PIR Insulation Board 2400mm x 1200mm (8′ x 4′) Pack of 4 (11.52m2)
All three models 70mm Kingspan Therma PIR Insulation Board:
- 70mm Thermapitch TP10
- 70mm Thermafloor TF70
- 70mm Thermawall TW55
share the same high-performance PIR core and low-emissivity foil facings, offering excellent thermal efficiency and easy installation. Although labeled differently, these boards share identical technical specifications.
£178.13£213.76 Ex VATInc VAT£15.46£18.55 Per M2 Add to cart -
75mm Kingspan Therma TP10 / TF70 / TW55 PIR Insulation Board 2400mm x 1200mm (8′ x 4′) Pack of 4 (11.52m2)
All three models 75mm Kingspan Therma PIR Insulation Board:
- 75mm Thermapitch TP10
- 75mm Thermafloor TF70
- 75mm Thermawall TW55
share the same high-performance PIR core and low-emissivity foil facings, offering excellent thermal efficiency and easy installation. Although labeled differently, these boards share identical technical specifications.
£186.00£223.20 Ex VATInc VAT£16.15£19.38 Per M2 Add to cart -
80mm Kingspan Therma TP10 / TF70 / TW55 PIR Insulation Board 2400mm x 1200mm (8′ x 4′) Pack of 4 (11.52m2)
All three models 80mm Kingspan Therma PIR Insulation Board:
- 80mm Thermapitch TP10
- 80mm Thermafloor TF70
- 80mm Thermawall TW55
share the same high-performance PIR core and low-emissivity foil facings, offering excellent thermal efficiency and easy installation. Although labeled differently, these boards share identical technical specifications.
£214.38£257.26 Ex VATInc VAT£18.61£22.33 Per M2 Add to cart -
90mm Kingspan Therma TP10 / TF70 / TW55 PIR Insulation Board 2400mm x 1200mm (8′ x 4′) Pack of 3 (8.64m2)
All three models 90mm Kingspan Therma PIR Insulation Board:
- 90mm Thermapitch TP10
- 90mm Thermafloor TF70
- 90mm Thermawall TW55
share the same high-performance PIR core and low-emissivity foil facings, offering excellent thermal efficiency and easy installation. Although labeled differently, these boards share identical technical specifications.
£170.41£204.49 Ex VATInc VAT£19.72£23.66 Per M2 Add to cart -
20mm Kingspan Therma TP10 / TF70 / TW55 PIR Insulation Board 2400mm x 1200mm (8′ x 4′) Pack of 15 (43.20m2)
All three models 20mm Kingspan Therma PIR Insulation Board:
- 20mm Thermapitch TP10
- 20mm Thermafloor TF70
- 20mm Thermawall TW55
share the same high-performance PIR core and low-emissivity foil facings, offering excellent thermal efficiency and easy installation. Although labeled differently, these boards share identical technical specifications.
No longer in production.
£319.28£383.14 Ex VATInc VAT£7.39£8.87 Per M2 Get restock alert
Suspended Floor Insulation TP10/TF70/TW55
Properly fitted suspended floor insulation helps keep interior spaces warm. It is made for use in any buildings with timber or beam-and-block floors, including modern buildings and period homes. These floors are exposed to an air void beneath them and can lose up to 15% of a property’s heat if left uninsulated.
What is suspended floor insulation?
Also known as underflow insulation for timber or beam-and-block floors, suspended flooring insulation is positioned between the joists of a suspended floor. These floors have an air gap underneath that causes them to lose heat.
Without insulation, that empty space acts like a cold bridge (a pathway that lets heat escape), causing draughts to rise into the room above. When you fit insulation underneath or between joists, the insulation forms a barrier that keeps heat inside.
What is suspended floor insulation used for?
Underfloor insulation for timber floors effectively reduces the amount of heat lost through suspended floors. It is ideal for:
- For installation between joists in older buildings with timber floors.
- New builds that aim to fulfil Building Regulations for energy performance.
- Retrofit projects where you want more comfort and efficiency, but don’t want to replace the whole floor.
Types of suspended floor insulation
Insulation for suspended floors is available in two main types: rigid panels and soft insulation slabs. Both options are available in our suspended floor insulation collection.
Made from materials like PIR, XPS, or EPS for lighter applications where cost-efficiency matters, rigid boards offer excellent compressive strength and thermal efficiency. They are perfect for floors that need to handle higher loads or where a precise fit is required between joists.
Soft Insulation Slabs or Insulation Rolls
Soft insulation slabs and rolls are lightweight, flexible and quick to install. Usually made from glass or mineral wool, they fit tightly between joists. This insulation is excellent at reducing heat loss and sound transfer and is therefore ideal for uneven or older timber floors.
Both underfloor insulation suspended floor boards and flexible slabs deliver reliable, long-term performance. Choose rigid boards for strength and stability, or soft slabs and rolls for flexibility and sound control.
Benefits of insulation for suspended flooring
Installing suspended floor insulation offers several advantages:
- Lower energy bills.
- Increased comfort.
- Sound absorption.
- Moisture protection.
- Environmentally friendly.
Why choose our underfloor insulation for timber floors?
We supply trusted brands that deliver lasting performance across all suspended floor applications.
We provide enough variety to meet various flooring requirements. Whatever type of suspended timber floor insulation you require, you will find it at our store.
Give your floors the upgrade they deserve with high-quality suspended floor insulation from Insulation Wholesale. We deliver within 1-3 working days across the UK, unless stated otherwise on the product page or during checkout. Browse our full range of rigid insulation panels and flexible slabs.
FAQ
What thickness insulation for suspended floor?
The right floor insulation suspended floor setup, including thickness, will depend on the type of insulation used, target U-value, floor design, and load requirements. In most cases, Building Regulations call for 100mm to 150mm of between-joist insulation. Analyse the building spec and check the product’s R-value for optimal performance.
How to install suspended floor insulation?
- Step 1: Remove your floorboards. Check for signs of moisture or mould and replace any that are affected. If insulating an older property, lay a breathable membrane underneath the insulation. This will help block draughts while boosting ventilation.
- Step 2: Fit your suspended floor insulation between the joists. Do not compress soft insulation, as this can reduce its effectiveness.
- Step 3: Secure the insulation using support wires, battens or netting.
- Step 4: Add a vapour control layer if it’s required, then replace the floorboards. Ensure the underfloor void remains well ventilated to prevent condensation and timber decay
How much does suspended floor insulation cost?
Suspended floor insulation prices vary based on coverage per roll or board and the insulation’s thermal rating. Mineral wool generally goes for £20–£30 per roll, while rigid PIR boards range between £25 and £50 per sheet.
