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Roof Insulation

Thermal roof insulation is usually installed to improve thermal performance of the house (reduce heating and cooling of space). This in turn reduces energy use to make the house warm. It also reduces carbon dioxide emission to make the house more environmentally friendly and also reduces energy cost. The advantages of installing roof insulation are the increase in living space (converted lofts) and the elimination of condensation on roof surfaces during cold temperatures.

The roof insulation must be installed dry and be kept in this state. When installing board and batt type roof insulation, gaps should not be left as they minimize roof insulation effectiveness. Other factors influencing roof insulation effectiveness include temperature cycling, vibrations, and other similar mechanical forces. The functionality of your roof membrane is also crucial. If you cannot install roof insulation correctly, you will seriously impair its efficiency.

Two types of roof are most commonly found in commercial and residential settings: Flat Roof and Pitched Roof.

Flat Roof

Flat roof can be constructed to create what is called a ‘warm roof’ or a ‘cold roof’ depending on the position of the insulation installed. Inverted roof construction is also used in flat roofs exposed to high temperatures.

Pitched Roof

Depending on the design two types of pitched roof can be found: with a ceiling and without a ceiling. Pitched roofs also use cold and warm specification. These can be further classified into cold breathing, cold ventilated, warm breathing and warm ventilated roofs.

Insulationhsop.co offers a wide range of flat and pitched roof insulation from the manufacturers: Celotex, Xtratherm, Knauf, Kay Metzeler, Cellecta and others. For more information about the particular products please see product description.

R-value Comparison Chart for Roof Insulation for products available at Insulation Shop


Legend

1* Rockwool RW3 Slab (Prorox SL930)

2* Earthwool RS45 Universal Slab, Earthwool RS60 Universal Slab, Earthwool RS100 Universal Slab, Rockwool RWA45 (Prorox SL920)

3* Earthwool Flexible Slab, Rockwool Flexi Insulation Slab

4* Rockwool Hardrock Multi-Fix Dual Density Board

5* Rockwool RW5 Slab (Prorox SL960)

6* Celotex FR5000 Fire Resistant Insulation Board, Xtratherm XtroLiner Insulation Board

7* Celotex TB4000 Insulation Board, Celotex GA4000 Insulation Board, Celotex XR4000 Insulation Board, Celotex Crown-Bond Flat Roof Insulation Board, Celotex Crown-Fix Flat Roof Insulation Board, Celotex Crown-Up Flat Roof Insulation Board, Kingspan Thermapitch TP10 Pitched Roof Insulation Board, Kingspan Thermaroof TR26 Insulation Board, Xtratherm Thin-R Insulation Board, Recticel Eurothane GP Insulation Board, EcoTherm EcoVersal Insulation Board, Kingspan Thermaroof TR31 bonded to Plywood, Xtratherm Plydeck bonded to OSB, Recticel Plylok Flat Roof Insulation bonded to Plywood, EcoTherm Eco-Deck - Insulated Flat Roof Decking

8* Kingspan Thermaroof TR24 Insulation Board, Kingspan Thermaroof TR27 Insulation Board, Xtratherm Flat Roof Board FR-MG, Xtratherm Flat Roof Board FR-BGM

9* Kingspan Kooltherm K7 Pitched Roof Board, Xtratherm Safe-R insulation Board

10* Cellecta Yelofoam X2i, Cellecta Hexatherm XPLY Plywood Thermal Laminate Roof Board, Kingspan Styrozone H350R Flat Roof XPS Board

11* Grey Polystyrene (Graphite) EPS

12* Cellecta Hexatherm XROOF 300L XPS, Cellecta Hexatherm XDRAiN

13* Cellecta Hexatherm XROOF 300L XPS, Cellecta Hexatherm XMD Vertical Up-Stand Roof Board, Cellecta Hexatherm XDRAiN Drainage Channel Inverted Roof Board, Sundolitt XPS300 Extruded Polystyrene Board

14* Kingspan Styrozone N300R XPS Board 

15* EPS100 Polystyrene Insulation Board Jablite, Kingspan Styrozone N500R XPS Board

16* EPS70 Polystyrene Insulation Board Kay-Metzeler 

17* Jablite EPS70 Polystyrene Insulation Board

18* White Polystyrene Board

CHOOSE MANUFACTURERS or scroll down to see products (show)

Brand: Isoroc Model and Size: 1000mm x 600mm - 1.8m2
Delivery Time: 1 - 2 days
100mm Isoroc Isofas Mineral Wool Insulation Slab is a reliable and durable non-flammable insulation solution for universal use. These slabs can be used in external and internal wall insulation as thermal, acoustic and fire insulation. They can be used as a barrier for fire protection...
Guide Price: £41.00
£49.20 inc VAT
100mm Rockwool Twin Roll Loft Insulation
Guide Price
Brand: Rockwool Model and Size: 2750x1200mm - 6.60m2
Delivery Time: 2 - 3 working days
100mm Rockwool Twin Roll is a fire resistant, non-combustible, medium density mineral wool insulation with high acoustic properties. The roll is manufactured as one 200mm roll, and is pre-cut down the middle to create the option of two 100mm rolls as one package. Rockwool Twinroll is the insulation ..
Guide Price: £70.56
£84.67 inc VAT
Brand: YBS Insulation Model and Size: 1.2m x 10m - 12m2 - Free delivery
Delivery Time: 1-3 working days
15mm EcoQuilt Expert is a flexible, easy to install, 1.2m wide multi-layer insulation blanket for roofs, walls & floors that effectively deals with all forms of energy transfer, offering tremendous thermal benefits. It consists of 6 layers of material including reflective foil on both sides and ..
£95.68
£114.82 inc VAT
17.5mm Polyfoam XPS Laminating Board - (pallet of 68) - 1200mm x 2400mm
Guide Price
Brand: Polyfoam XPS Model and Size: 1200x2400mm - 195.84m2
Delivery Time: 5 - 7 days
17.5mm Polyfoam XPS Laminating Board is a high strength (kPA 200) extruded polystyrene board (XPS) that can be used as a thermal and structural insulation as a fabrication board for a wide variety of manufacturing processes and applications. This board has high resistance to water absorption an..
Brand: Polyfoam XPS Model and Size: 1220x3000mm - 204.96m2
Delivery Time: 5 - 7 days
21mm Polyfoam XPS Laminating Board is a high strength (kPA 200) extruded polystyrene board (XPS) that can be used as a thermal and structural insulation as a fabrication board for a wide variety of manufacturing processes and applications. This board has high resistance to water absorption and ..
25mm Flat Roof Insulation Board Xtratherm FR-BGM (pack of 18)
Guide Price
Brand: Xtratherm Model and Size: 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 mechanical..
Guide Price: £120.29
£144.35 inc VAT
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. With a higher rated thermal conductivity Kooltherm K107 replaces Kingspan Ko..
£467.68
£561.22 inc VAT
Brand: Recticel Model and Size: 600x1200 - 14.40m2
Delivery Time: 1-3 working days
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 ..
Guide Price: £101.78
£122.14 inc VAT
Brand: Unilin Insulation (formerly known as Xtratherm) Model and Size: 1200x600mm - 12.96m2
Delivery Time: 3 - 5 days
25mm Unilin FR-BGM is a BBA certified high performance 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. Unilin FR-BGM is suitable to apply torch on felt directly on the insulation. FR..
Guide Price: £120.31
£144.37 inc VAT
Brand: Unilin Insulation (formerly known as Xtratherm) Model and Size: 2400x1200mm - 34.56m2
Delivery Time: 1-3 working days
25mm Unilin Thin-R FR/ALU Flat Roof PIR Insulation Board is a flat roof insulation with enhanced vapour resistant performance. Unilin 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. Unilin Thin..
25mm Xtratherm Thin-R FR/ALU Flat Roof PIR Insulation Board (pack of 12)
Guide Price
Brand: Xtratherm Model and Size: 2400x1200mm - 34.56m2
Delivery Time: 1-3 working 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 use bel..
Brand: Kingspan Model and Size: 1250x600mm - 10.50m2
Delivery Time: 7 - 10 days
30mm Kingspan GreenGuard GG300 XPS Board is an insulation for inverted roofs, basements, car park decks, and heavy-duty commercial, industrial and cold store flooring. They have high compressive strength, and a closed cell structure which resists the absorption of ground water and the passage of wat..
£102.70
£123.24 inc VAT
Brand: Recticel Model and Size: 600x1200 - 11.52m2
Delivery Time: 1-3 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..
Guide Price: £146.93
£176.32 inc VAT
Brand: Soprema Model and Size: 1250x600mm - 10.50m2
Delivery Time: 2 - 3 working days
30mm Soprema XPS SL is an extremely durable, high strength extruded polystyrene thermal insulation board offering high water resistance for flat and pitched roofs. It can be stored and installed in severe wet weather conditions with no deterioration during its life. It is easy to cut and customise o..
Guide Price: £102.21
£122.65 inc VAT
Model and Size: 1265mm x 615mm - 10.92m2
Delivery Time: 2 - 3 working days
30mm Styrodur 3000CS Extruded Polystyrene Board XPS is an extremely durable thermal insulation board made of extruded polystyrene offering exceptional thermal performance and versatility. Styrodur 3000CS is the all-round thermal insulation board with smooth surface and rebated on all four edges for ..
Brand: Ravago Building Solutions Model and Size: 2500x600mm - 15m2 per pack
Delivery Time: 5 - 7 days
40mm Ravatherm XPS X 300 SB Extruded Polystyrene Board is an extremely durable thermal insulation board made of extruded polystyrene offering exceptional thermal performance and versatility. It is a lightweight board that is able to withstand extreme loads. It is highly water resistant polystyrene t..
Brand: YBS Insulation Model and Size: 1.2m x 10m - 12m2 - Free delivery
Delivery Time: 3 - 5 days
40mm YBS BreatherQuilt is a flexible, easy to install, multi-layer breathable insulation that gives a high level of thermal performance, and also effectively deals with condensation and all forms of energy transfer. Consists of 11 layers. The YBS Breather Quilt is a thermal insulation in a 40mm thin..
£125.77
£150.92 inc VAT
Brand: YBS Insulation Model and Size: 1.2m x 10m - 12m2 - Free delivery
Delivery Time: 1-3 working days
40mm YBS SuperQuilt is a flexible, easy to install, 1.2m wide multi-layer insulation blanket for roofs, walls & floors that effectively deals with all forms of energy transfer, offering tremendous thermal benefits. It consists of 19 layers of material including reflective foil, expanded polyethy..
£129.52
£155.42 inc VAT
Brand: Actis Model and Size: 6.25x1.6m - 10.00m2
Delivery Time: 2 - 3 working days
45mm Actis HControl Hybrid is a thin multi-foil insulation that combines insulation, air tightness, moisture resistance and reflective properties. Actis HControl Hybrid blocks the water vapour diffusion through the fabric of the building, preventing the risk of condensation. As it is airtight, ..
£73.57
£88.28 inc VAT
Model and Size: 1.5m x 10m - 15m2 - Free delivery
Delivery Time: 1-3 working days
45mm EcoQuilt 45 is a flexible, easy to install, 1.5m wide multi-layer insulation blanket for roofs, walls & floors that effectively deals with all forms of energy transfer, offering tremendous thermal benefits. It consists of 11 layers of material including reflective foil on both sides and wil..
£123.58
£148.30 inc VAT
Brand: SuperFOIL Model and Size: 1.2m x 10m - 12m2
Delivery Time: 2 - 3 working days
45mm SuperFOIL Multi-layer Foil Insulation SF19+ is a multi layer air seal and radiant barrier that can be used over rafter or under rafter in roofs and also on walls. Superfoil SF19+ is manufactured with 40% recycled materials and is recyclable at the end of its useful life..
Guide Price: £97.20
£116.64 inc VAT
Brand: YBS Insulation Model and Size: 1.05m x 25m - 26.25m2 - Free delivery
Delivery Time: In Stock 1-2 working days
4mm YBS YBS Airtec Double is a flexible, easy to install, multi-layer reflective aluminium foil air bubble insulation membrane in between hat acts like airtight vapour control layer. The core bubble profile offers thermal benefits by trapping air within its bubble structure while creating low e..
£73.00
£87.60 inc VAT
Brand: Actis Model and Size: 1145mm x 1200mm - 5.5m2
Delivery Time: 2 - 3 working days
50mm Actis Hybris Panel is a multi-foil insulation featuring a unique and flexible honeycomb structure that combines insulation, air tightness, moisture resistance and reflective properties. The low-emmissivity honeycomb structure is protected from excessive dust and air movements. Actis Hybris..
Guide Price: £28.64
£34.37 inc VAT
Brand: Kingspan Model and Size: 1250x600mm - 6.00m2
Delivery Time: 5 - 7 days
50mm Kingspan GreenGuard GG500 XPS Board is an insulation for car park decks, and heavy-duty commercial, industrial and cold store flooring. They have high compressive strength, and a closed cell structure which resists the absorption of ground water and the passage of water vapour. The GreenGu..
£127.04
£152.45 inc VAT
Brand: Kingspan Model and Size: 1200x600mm - 4.32m2
Delivery Time: 3 - 5 days
50mm Kingspan Thermaroof TR24 is a rigid insulation board used for flat roof insulation, consisting of a rigid thermoset insulation core, covered with a glass tissue coated with bitumen. Its upper surface is finished with a thermo fusible polypropylene fleece, while the lower surface is covered with..
Guide Price: £92.33
£110.80 inc VAT
50mm Polyfoam XPS Roofboard - Extra grade - Extruded Polystyrene Board (pack of 9) - 600mm x 1250mm
Guide Price
Brand: Polyfoam XPS Model and Size: 1250x600mm - 6.75m2
Delivery Time: 5 - 7 days
50mm Polyfoam XPS Roofboard - Extra grade is a high strength (kPA 300) extruded polystyrene board (XPS) with high compressive strength highly resistant to water absorption  suitable for roofing applications. It is a lap jointed board and withstands both occasional and long term s..
50mm Ravatherm XPS X 300 SL Extruded Polystyrene Board - pack of 8
Guide Price
Brand: Ravago Building Solutions Model and Size: 1250x600mm - 6.0m2
Delivery Time: 2 - 3 working days
50mm Ravatherm XPS X 300 SL Extruded Polystyrene Board is an extremely durable thermal insulation board made of extruded polystyrene offering exceptional thermal performance and versatility. It is a lightweight board that is able to withstand extreme loads. It is highly water resistant polystyrene t..
Brand: Ravago Building Solutions Model and Size: 1250x600mm - 6.0m2
Delivery Time: 2 - 3 working days
50mm Ravatherm XPS X 500 SL Extruded Polystyrene Board is an extremely durable thermal insulation board made of extruded polystyrene offering exceptional thermal performance and versatility. It is a lightweight board that is able to withstand extreme loads. It is highly water resistant polystyrene t..
50mm Ravatherm XPS X 700 SL Extruded Polystyrene Board - pack of 8
Guide Price
Brand: Ravago Building Solutions Model and Size: 1250x600mm - 6.0m2
Delivery Time: 2 - 3 working days
50mm Ravatherm XPS X 700 SL Extruded Polystyrene Board is an extremely durable thermal insulation board made of extruded polystyrene offering exceptional thermal performance and versatility. It is a lightweight board that is able to withstand extreme loads. It is highly water resistant polystyrene t..
50mm Rockwool Rockton Insulation Slab - 1000mm x 610mm (pack of 12)
Guide Price
Brand: Rockwool Model and Size: 1000mm x 610mm - 7.32m2
Delivery Time: 1 - 2 days
50mm Rockwool Rocton Slabs are a reliable and durable non-flammable insulation solution for universal use. These high density slabs can be used in partition walls, curtain walls, within steel and timber frame structures, over ceilings and between floor joists. Rockwool Rocton has the highest so..
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