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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

Brand: Novia Model and Size: 1m x 250m
Delivery Time: 1 - 2 days
1m wide Novia FSPE Insulation Facing membrane is a 5x5mm scrim reinforced 18 micron aluminium foil PE laminate, achieving a Class 0 fire rating to BS 476 when used as a facing on suitable insulation substrates. Its 18 micron aluminium foil coating can offer enhanced U values within roof and wall con..
Novia BS 1521 Grade A1F Building Paper 1m x 25m Roll
Guide Price
Brand: Novia Model and Size: 1m x 25m
Delivery Time: 1 - 2 days
Novia BS 1521 Grade A1F Building Paper is a traditional, reinforced kraft paper bitumen-bonded, building paper laminate for use as a waterproof building paper. It is manufactured with wet-strength kraft paper and meeting the technical requirements of BS 1521 for water-proof building papers, the prod..
Guide Price: £49.39
£59.27 inc VAT
Novia Floorguard General Purpose Temporary Protection - 1m x 50m Roll
Guide Price
Brand: Novia Model and Size: 1m x 50m
Delivery Time: 1 - 2 days
Novia Floorguard is a basic low-cost recycled grey board suitable for all general temporary protection applications. It is water and slip-resistant and can be quickly and easily cut to fit any awkward shapes found on site.CHARACTERISTICS500 microns thick,Water resistant,Slip resistant.APPLICATIONFor..
Guide Price: £28.69
£34.43 inc VAT
Novia 509B Shed Lining Paper 1.8m x 50m Roll
Guide Price
Brand: Novia Model and Size: 1.8m x 50m
Delivery Time: 1 - 2 days
Novia 509B Shed Lining Paper is suitable for use in a wide range of garden structures and adds an extra level of protection to your building by creating a wind proof and waterproof outer layer. It is an ideal option for uninsulated garden structure construction and for renovating a current uninsulat..
Guide Price: £114.94
£137.93 inc VAT
30mm Recticel Powerdeck U PIR Insulation Board for Flat Roof Hot Applied Systems - pack of 16
Guide Price
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: £158.68
£190.42 inc VAT
25mm Recticel Powerdeck F PIR Insulation Board for Bonded Warm Roof Systems - pack of 20
Guide Price
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: £109.92
£131.90 inc VAT
30mm Soprema XPS SL Extruded Polystyrene Board (pack of 14) 30mm Soprema XPS SL Extruded Polystyrene Board (pack of 14)
Guide Price
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
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: EWI Pro Model and Size: 5L
Delivery Time: 2 - 3 working days
EWI-360 Fungicidal Wash can be used internally or externally on a variety of surfaces, such as brickwork, blockwork, stone, wood and plaster and also be used on roof tiles, slates, steel sheets, roofing felt and timber. EWI-360 would kill all micro-organisms, such as algae, mould, mildew and lichen...
£19.08
£22.90 inc VAT
Novia VC2T Reinforced Synthetic Laminate 1.5m x 50m Roll
Guide Price
Brand: Novia Model and Size: 1.5m x 50m
Delivery Time: 1 - 2 days
Novia VC2T Reinforced Synthetic Laminate is a lightweight, easy to use flame resistant temporary protection, which replaces the old-style kraft paper.CHARACTERISTICSHigh quality low cost solution, Lightweight, yet strong and tough, HDPE scrim reinforced, Suitable for a wide range of temporary applic..
Guide Price: £82.46
£98.95 inc VAT
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: 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: 1250x600mm - 5.25m2
Delivery Time: 3 - 5 days
60mm Kingspan GreenGuard GG700 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..
50mm Kingspan Thermaroof TR24 - (pack of 6)
Guide Price
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: £99.72
£119.66 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: DuPont Tyvek Model and Size: 1.5x50m - 75m2
Delivery Time: 1 - 2 days
DuPont AirGuard Reflective is an air and vapour control layer that is 100% air tight. It has a metallised surface with a very low emissivity internal vapour barrier that can enhance thermal comfort by reflecting up to 95% of radiant heat back into the building. It is usually installed with an air ga..
Brand: Knauf Model and Size: 4.5m x 1.4m - 123.2m2
Delivery Time: 2 - 3 weeks
90mm Knauf Earthwool FrameTherm Roll is a lightweight, flexible, resilient and non-combustible glass mineral wool quilt, used for friction fitting between timber studs and rafters. The rolls are 1140mm wide and ready cut to produce 3 rolls in 380mm widths. It is specifically designed for friction fi..
Easy-Trim Master 112GSM Breather Membrane for Pitched Roofs - 1m x 50m Roll
Guide Price
Model and Size: 1m x 50m
Delivery Time: 1 - 2 days
Easy-Trim Master 112GSM Breather Membrane is an air tight, vapour permeable, lightweight breather membrane for fully supported and unsupported installations in pitched roofs. It is a high performance breather membrane, consists of 3 layers to achieve a high vapour permeability, superior water resist..
Guide Price: £39.88
£47.86 inc VAT
Brand: Cellecta Model and Size: 1.5m x 50m - 75m2
Delivery Time: 2 - 3 working days
Cellecta HexaTex is a high performance thermal improvement membrane suitable for use on inverted roofs finished with gravel ballast, and concrete pavers on appropriate supports. Dramatically minimises the cooling effect associated with rainwater flowing down through the insulation and draining away...
Brand: Foliarex Model and Size: 1.5m x 50m
Delivery Time: 1 - 2 days
Strotex V 135GSM Breather Membrane is an air tight, vapour permeable, lightweight breather membrane for fully supported and unsupported installations in roofs and also for walls as a wind-proof material. It is a high performance breather membrane, consists of 3 layers to achieve a high vapour permea..
£55.00
£66.00 inc VAT
Brand: Icopal Model and Size: 1m x 5m - 120m2
Delivery Time: 7 - 10 days
Icopal Extra Strength Top Coat Bitumen Roofing Felt is an extra strength top coat roofing felt, made of heat-hardened polyester and thicker waterproofing on both sides for roofs and foundations. A latest generation, patented, specialised roofing felt for flat roofs. Due to the shorter heating t..
Brand: Icopal Model and Size: 1m x 10m - 200m2
Delivery Time: 7 - 10 days
Icopal  Roofing Felt Underlay 3mm Hydrobit V60 S30 Bitumen - Torch On is an extra strength base bitumen roofing felt, made of glass fleece reinforcement, coated with SBS modified bitumen blend with mineral filler, top side is finished with sand, bottom side is finished with foil. A latest ..
Brand: Foliarex Model and Size: 1.5m x 50m - 4125m2
Delivery Time: 7 - 10 days
Strotex V 135GSM Breather Membrane is an air tight, vapour permeable, lightweight breather membrane for fully supported and unsupported installations in roofs and also for walls as a wind-proof material. It is a high performance breather membrane, consists of 3 layers to achieve a high vapour permea..
£2,406.25
£2,887.50 inc VAT
Brand: Ceresit Model and Size: 870ml
Delivery Time: 1 - 2 days
Ceresit TS70 Mega is a high performance, one component low-pressure expanding polyurethane foam used for quick mounting of frames and for filling cavities, supplementing thermal and acoustic insulation. Ceresit TS 70 Mega foam is used for setting and sealing door and window frames, window sills, rol..
£9.80
£11.76 inc VAT
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: £129.91
£155.89 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
Brand: ZVM Model and Size: 80mm x 6.5/7.1mm - 100nos
Delivery Time: 1 - 2 days
80mm Carbon Steel Hex Head Self Drilling Screws for securing steel sheets and insulated panels to timber purlins. They can be used with galvanised or stainless steel bonded sealing washers with 2mm or 3mm thick epdm. They are suitable for attaching roofing sheets, composite panels and flashing to ti..
Brand: ZVM Model and Size: 75mm x 5.5/6.3mm - 100nos
Delivery Time: 1 - 2 days
75mm Carbon Steel Hex Head Self Drilling Screws for securing steel sheets and insulated panels to up to 3.5mm thick steel purlins. They can be used with galvanised or stainless steel bonded sealing washers with 2mm or 3mm thick epdm. They are suitable for attaching roofing sheets, composite panels a..
Brand: ZVM Model and Size: 80mm x 5.5/6.3mm - 100nos
Delivery Time: 1 - 2 days
80mm Carbon Steel Heavy Duty Hex Head Self Drilling Screws for securing steel sheets and insulated panels to up to 12.5mm thick steel purlins. They can be used with galvanised or stainless steel bonded sealing washers with 2mm or 3mm thick epdm. They are suitable for attaching roofing sheets, compos..
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