Between Rafters

This insulation is fitted between the rafters of the roof. Rafter-level insulation combined with ceiling insulation can be used together where an existing attic space is converted.
Celotex GA4000 General Purpose PIR Insulation Board 2.4m x 1.2m (All Sizes)
Celotex GA4000 General Purpose PIR Insulation Board 2.4m x 1.2m (All Sizes) Floor Insulation
Vendor
Celotex
Regular price
from £11.90 £14.28
Sale price
from £11.90 £14.28
Regular price
£16.92
Unit price
per 
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Celotex 50mm GA4050 2.4m x 1.2m
Celotex 50mm GA4050 2.4m x 1.2m Floor Insulation
Vendor
Celotex
Regular price
£17.49 £20.99
Sale price
£17.49 £20.99
Regular price
£0.00
Unit price
per 
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Celotex 100mm GA4100 2.4m x 1.2m | 100mm Celotex
Celotex 100mm GA4100 2.4m x 1.2m | 100mm Celotex Floor Insulation
Vendor
Celotex
Regular price
£29.50 £35.40
Sale price
£29.50 £35.40
Regular price
£0.00
Unit price
per 
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Knauf Loft Roll 44 Combi-Cut - All Sizes
Knauf Earthwool Loft Roll 44 Combi-Cut - All Sizes Loft Insulation
Vendor
Knauf
Regular price
from £30.30 £36.36
Sale price
from £30.30 £36.36
Regular price
£0.00
Unit price
per 
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Rockwool RWA45 (All Sizes)
Rockwool RWA45 (All Sizes) Floor Insulation
Vendor
Rockwool
Regular price
from £22.25 £26.70
Sale price
from £22.25 £26.70
Regular price
£0.00
Unit price
per 
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75mm Celotex GA4075 2.4m x 1.2m
75mm Celotex GA4075 2.4m x 1.2m Floor Insulation
Vendor
Celotex
Regular price
£24.90 £29.88
Sale price
£24.90 £29.88
Regular price
£0.00
Unit price
per 
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Knauf Acoustic Roll - All Sizes
Knauf Earthwool Acoustic Roll - All Sizes Loft Insulation
Vendor
Knauf
Regular price
from £45.43 £54.52
Sale price
from £45.43 £54.52
Regular price
£0.00
Unit price
per 
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Celotex 120mm XR4120 2.4m x 1.2m
Celotex 120mm XR4120 2.4m x 1.2m Floor Insulation
Vendor
Celotex
Regular price
£38.30 £45.96
Sale price
£38.30 £45.96
Regular price
£0.00
Unit price
per 
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Knauf 170mm Loft Roll 44 Combi-Cut (192.24m2) (Pallet Of 24 Packs)
Knauf 170mm Loft Roll 44 Combi-Cut (192.24m2) (Pallet Of 24 Packs) Insulation
Vendor
Knauf
Regular price
£0.00 £0.00
Sale price
£0.00 £0.00
Regular price
£0.00
Unit price
per 
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Knauf 200mm Loft Roll 44 Combi-Cut (6.84m2 roll)
Knauf Earthwool 200mm Loft Roll 44 Combi-Cut (5.93m2 roll) Loft Insulation
Vendor
Knauf
Regular price
£30.30 £36.36
Sale price
£30.30 £36.36
Regular price
£0.00
Unit price
per 
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Celotex XR4000 Insulation Board 1.2m x 2.4m - 110mm to 200mm
Celotex XR4000 Insulation Board 1.2m x 2.4m - 110mm to 200mm Loft Insulation
Vendor
Celotex
Regular price
from £37.84 £45.41
Sale price
from £37.84 £45.41
Regular price
£0.00
Unit price
per 
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Knauf 100mm Loft Roll 44 Combi-Cut (13.89m2 roll)
Knauf Earthwool Glass Mineral Insulation Loft Roll 44 Combi-Cut (13.89m2 roll) Loft Insulation
Vendor
Knauf
Regular price
£30.30 £36.36
Sale price
£30.30 £36.36
Regular price
£0.00
Unit price
per 
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70mm Celotex GA4070 2.4m x 1.2m
70mm Celotex GA4070 2.4m x 1.2m Floor Insulation
Vendor
Celotex
Regular price
£25.50 £30.60
Sale price
£25.50 £30.60
Regular price
£30.83
Unit price
per 
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150mm Celotex XR4150 2.4m X 1.2m | Celotex 150mm
150mm Celotex XR4150 2.4m X 1.2m | Celotex 150mm Floor Insulation
Vendor
Celotex
Regular price
£44.95 £53.94
Sale price
£44.95 £53.94
Regular price
£0.00
Unit price
per 
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Celotex 60mm GA4060 2.4m x 1.2m
Celotex 60mm GA4060 2.4m x 1.2m Floor Insulation
Vendor
Celotex
Regular price
£22.90 £27.48
Sale price
£22.90 £27.48
Regular price
£0.00
Unit price
per 
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90mm Celotex GA4090 2.4m x 1.2m
90mm Celotex GA4090 2.4m x 1.2m Floor Insulation
Vendor
Celotex
Regular price
£29.99 £35.99
Sale price
£29.99 £35.99
Regular price
£0.00
Unit price
per 
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Knauf 150mm Loft Roll 44 Combi-Cut (9.18m2 roll)
Knauf Earthwool 150mm Loft Roll 44 Combi-Cut (9.18m2 roll) Loft Insulation
Vendor
Knauf
Regular price
£30.30 £36.36
Sale price
£30.30 £36.36
Regular price
£0.00
Unit price
per 
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Rockwool Flexi-Slab - All Sizes
Rockwool Flexi-Slab - All Sizes Loft Insulation
Vendor
Rockwool
Regular price
from £37.24 £44.69
Sale price
from £37.24 £44.69
Regular price
£0.00
Unit price
per 
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80mm Celotex GA4080 2.4m x 1.2m
80mm Celotex GA4080 2.4m x 1.2m Floor Insulation
Vendor
Celotex
Regular price
£27.89 £33.47
Sale price
£27.89 £33.47
Regular price
£0.00
Unit price
per 
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Mannok Insulation Board 1.2m x 2.4m (All Sizes)
Mannok Insulation Board 1.2m x 2.4m (All Sizes) Floor Insulation
Vendor
Mannok
Regular price
from £0.00 £0.00
Sale price
from £0.00 £0.00
Regular price
£0.00
Unit price
per 
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100% Sheepwool Insulation Comfort Roll (All Sizes)
100% Sheepwool Insulation Comfort Roll (All Sizes) Floor Insulation
Vendor
Sheepwool
Regular price
from £61.05 £73.26
Sale price
from £61.05 £73.26
Regular price
£80.70
Unit price
per 
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100% Sheepwool Insulation Optimal Roll (All Sizes)
100% Sheepwool Insulation Optimal Roll (All Sizes) Loft Insulation
Vendor
Sheepwool
Regular price
from £80.85 £97.02
Sale price
from £80.85 £97.02
Regular price
£106.38
Unit price
per 
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Kingspan Thermapitch TP10 Pitched Roof Board (All Sizes) 2.4m x 1.2m
Kingspan Thermapitch TP10 Pitched Roof Board (All Sizes) 2.4m x 1.2m Loft Insulation
Vendor
Kingspan
Regular price
from £107.90 £129.48
Sale price
from £107.90 £129.48
Regular price
£0.00
Unit price
per 
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Isover Spacesaver Combi-Cut - All Sizes
Isover Spacesaver Combi-Cut - All Sizes Loft Insulation
Vendor
Isover
Regular price
from £32.05 £38.46
Sale price
from £32.05 £38.46
Regular price
£0.00
Unit price
per 
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Isover Acoustic Partition Roll - APR 1200 (All Sizes)
Isover Acoustic Partition Roll - APR 1200 (All Sizes) Loft Insulation
Vendor
Isover
Regular price
from £44.57 £53.48
Sale price
from £44.57 £53.48
Regular price
£0.00
Unit price
per 
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140mm Celotex XR4140 Insulation Board 2.4m x 1.2m
140mm Celotex XR4140 Insulation Board 2.4m x 1.2m Floor Insulation
Vendor
Celotex
Regular price
£44.95 £53.94
Sale price
£44.95 £53.94
Regular price
£0.00
Unit price
per 
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Rockwool RW3 Acoustic, Thermal, and Fire Performance Insulation Slabs (All Sizes)
Rockwool RW3 Acoustic, Thermal, and Fire Performance Insulation Slabs (All Sizes) Cavity wall Insulation
Vendor
Rockwool
Regular price
from £394.90 £473.88
Sale price
from £394.90 £473.88
Regular price
£0.00
Unit price
per 
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100% Sheepwool Insulation Premium Roll (All Sizes)
100% Sheepwool Insulation Premium Roll (All Sizes) Loft Insulation
Vendor
Sheepwool
Regular price
from £99.99 £119.99
Sale price
from £99.99 £119.99
Regular price
£131.70
Unit price
per 
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Rockwool Twinroll 100mm Mineral Wool Insulation (Pallet of 18)
Rockwool Twinroll 100mm Mineral Wool Insulation (6.60m2) Loft Insulation
Vendor
Rockwool
Regular price
£1,510.00 £1,812.00
Sale price
£1,510.00 £1,812.00
Regular price
£0.00
Unit price
per 
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130mm Celotex XR4130 2.4m x 1.2m
130mm Celotex XR4130 2.4m x 1.2m Floor Insulation
Vendor
Celotex
Regular price
£44.70 £53.64
Sale price
£44.70 £53.64
Regular price
£0.00
Unit price
per 
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Knauf 170mm Loft Roll 44 Combi-Cut (8.01m2 roll)
Knauf Earthwool 170mm Loft Roll 44 Combi-Cut (8.01m2 roll) Loft Insulation
Vendor
Knauf
Regular price
£30.85 £37.02
Sale price
£30.85 £37.02
Regular price
£0.00
Unit price
per 
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Celotex 110mm XR4110 2.4m x 1.2m
Celotex 110mm XR4110 2.4m x 1.2m Floor Insulation
Vendor
Celotex
Regular price
£37.84 £45.41
Sale price
£37.84 £45.41
Regular price
£0.00
Unit price
per 
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Rockwool Roll - 150mm x 1200mm x 3650mm (Pallet of 18)
Rockwool Roll - All Sizes Loft Insulation
Vendor
Rockwool
Regular price
£1,560.75 £1,872.90
Sale price
£1,560.75 £1,872.90
Regular price
£0.00
Unit price
per 
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Rockwool RW5 (All Sizes)
Rockwool RW5 1200mm x 600mm (All Sizes) Cavity wall Insulation
Vendor
Rockwool
Regular price
from £691.65 £829.98
Sale price
from £691.65 £829.98
Regular price
£0.00
Unit price
per 
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Celotex 165mm XR4165 2.4m x 1.2m (Pallet of 12)
Celotex 165mm XR4165 2.4m x 1.2m (Pallet of 12) Wall Insulation
Vendor
Celotex
Regular price
£729.90 £875.88
Sale price
£729.90 £875.88
Regular price
£0.00
Unit price
per 
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Thinsulex TLX Silver Multifoil 1.2m x 10m (12m2 roll)
Thinsulex TLX Silver Multifoil 1.2m x 10m (12m2 roll) Loft Insulation
Vendor
Thinsulex
Regular price
£193.41 £232.09
Sale price
£193.41 £232.09
Regular price
£0.00
Unit price
per 
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Actis Hybris 1200mm x 1145mm - All Sizes
Actis Hybris 1200mm x 1145mm - All Sizes All Insulation
Vendor
Actis
Regular price
from £814.40 £977.28
Sale price
from £814.40 £977.28
Regular price
£0.00
Unit price
per 
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Knauf OmniFit Slabs (All Sizes)
Knauf Earthwool OmniFit Slabs (All Sizes) Loft Insulation
Vendor
Knauf
Regular price
from £898.49 £1,078.19
Sale price
from £898.49 £1,078.19
Regular price
£0.00
Unit price
per 
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Sheepwool SilentWool Floor Insulation - 1m x 25m
Sheepwool SilentWool Floor Insulation - 1m x 25m Loft Insulation
Vendor
Sheepwool
Regular price
£95.99 £115.19
Sale price
£95.99 £115.19
Regular price
£126.44
Unit price
per 
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Sheepwool SilentWool Joist Insulation - 0.1m x 10m
Sheepwool SilentWool Joist Insulation Loft Insulation
Vendor
Sheepwool
Regular price
£6.57 £7.88
Sale price
£6.57 £7.88
Regular price
£8.76
Unit price
per 
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Knauf RS45 (All Sizes) 600mm x 1200mm
Knauf Earthwool RS45 (600mm x 1200mm) - All Sizes Loft Insulation
Vendor
Knauf
Regular price
from £344.37 £413.24
Sale price
from £344.37 £413.24
Regular price
£0.00
Unit price
per 
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Knauf RS60 (600mm x 1200mm) - All Sizes
Knauf Earthwool RS60 (600mm x 1200mm) - All Sizes Loft Insulation
Vendor
Knauf
Regular price
from £404.14 £484.97
Sale price
from £404.14 £484.97
Regular price
£0.00
Unit price
per 
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Knauf Rocksilk Flexible Slab (All Sizes) 1200mm x 600mm
Knauf Earthwool Flexible Slab 600mm x 1200mm - All Sizes All Insulation
Vendor
Knauf
Regular price
from £374.92 £449.90
Sale price
from £374.92 £449.90
Regular price
£0.00
Unit price
per 
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Celotex XR4200 200mm x 2.4m x 1.2m (Pallet of 12)
Celotex XR4200 200mm x 2.4m x 1.2m (Pallet of 12) Loft Insulation
Vendor
Celotex
Regular price
£952.28 £1,142.74
Sale price
£952.28 £1,142.74
Regular price
£0.00
Unit price
per 
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Knauf OmniFit Roll - All Sizes
Knauf Earthwool OmniFit Roll - All Sizes Loft Insulation
Vendor
Knauf
Regular price
£1,176.85 £1,412.22
Sale price
£1,176.85 £1,412.22
Regular price
£0.00
Unit price
per 
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Sheepwool SilentWool Carpet Insulation - 1m x 10m
Sheepwool SilentWool Carpet Insulation - 1m x 10m Loft Insulation
Vendor
Sheepwool
Regular price
£86.89 £104.27
Sale price
£86.89 £104.27
Regular price
£114.54
Unit price
per 
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Thinsulex TLX Gold Multifoil 1.2m x 10m (12m2 roll)
Thinsulex TLX Gold Multifoil 1.2m x 10m (12m2 roll) Loft Insulation
Vendor
Thinsulex
Regular price
£258.55 £310.26
Sale price
£258.55 £310.26
Regular price
£0.00
Unit price
per 
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Knauf RS100 (600mm x 1200mm) - All Sizes
Knauf Earthwool RS100 (600mm x 1200mm) - All Sizes Loft Insulation
Vendor
Knauf
Regular price
from £641.69 £770.03
Sale price
from £641.69 £770.03
Regular price
£0.00
Unit price
per 
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Navigating through the vast world of insulation can be complex, especially when it comes to optimising between rafter insulation for your project. At Insulation4Less, we bring forward a diverse array of products tailored to meet varied insulation needs.

PIR Insulation Boards

In the realm of PIR (Polyisocyanurate) Insulation Boards, the Celotex GA4000 series, including GA4050, GA4070, GA4090, and more, is highly recognized for its multi-purpose applications, offering thickness variations to cater to different thermal resistance needs. With an impressive lambda value, PIR boards from Celotex and Mannok assure robust thermal performance and can be used in floors, roofs, and walls for comprehensive insulation.

When to Choose PIR Insulation Boards:

  • When You require high thermal performance with minimal thickness.
  • For refurbishment projects where space may be limited.

 

Mineral Wool

Mineral wool like the Rockwool RWA45 and Knauf Loft Roll 44 Combi-Cut comes in varied thickness and sizes, boasting excellent thermal and acoustic insulation properties. The Rockwool Flexi-Slab and RW3, and Knauf Acoustic Roll further showcase the versatility of mineral wool in providing a snug fit between rafters, ensuring no gaps and thus, optimal performance.

When to Choose Mineral Wool:

  • When excellent fire resistance is paramount.
  • For improved acoustic insulation alongside thermal properties.

 

Sheepwool

For the eco-conscious, 100% Sheepwool Insulation rolls, available in Comfort, Optimal, and Premium ranges, provide a sustainable choice, ensuring non-itch, breathable, and high-performing thermal solutions. It brings a natural option, handling humidity effectively by absorbing and releasing moisture without compromising R-values.

When to Choose Sheepwool Insulation:

  • For an eco-friendly, sustainable option.
  • When moisture management is crucial.

 

Multifoil Insulation

Thinsulex TLX Silver Multifoil offers a reflective insulation solution, ensuring minimal thickness with high thermal efficiency. The multilayer foil reflects radiant heat, effectively reducing heat transfer and providing a cost- and space-efficient insulation strategy.

When to Choose Multifoil Insulation:

  • When space is highly constrained.
  • For enhanced reflection of radiant heat.

 

Rigid Thermoset Insulation

Kingspan Thermapitch TP10 provides a rigid thermoset insulation solution designed for a robust, long-term, and consistent thermal performance across a multitude of applications, including tiled or slated pitched warm roof spaces.

When to Choose Rigid Thermoset Insulation:

  • When durability and moisture resistance are key.
  • For a reliable, long-term thermal solution.

 

Selecting Your Ideal Between Rafter Insulation

In choosing between the myriad of options, consider:

  • Thermal Performance: The R/U-values required.
  • Space: The availability and constraints of installation space.
  • Application: The specific area of use such as walls, floors, or roofs.
  • Sustainability: Environmental impact and sustainability credentials.
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