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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

45mm SuperFOIL Multi-layer Foil Insulation SF19 Plus - 1.2m x 10m Roll 45mm SuperFOIL Multi-layer Foil Insulation SF19 Plus - 1.2m x 10m Roll
Guide Price
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. It comprises 11 layers:..
Guide Price: £97.20
£116.64 inc VAT
Brand: Low-E Model and Size: 1.25m x 4m - 5m2 - Free Delivery
Delivery Time: 1-3 working days
Low-E Perforated Reflective Foil Insulation gives you all the benefits of a reflective foil insulation, but the perforations are designed to allow moisture to pass through the product while limiting air movement. Low-E Perforated is recommended for use on the external sides of an insulation system a..
£44.69
£53.63 inc VAT
Brand: Low-E Model and Size: 416mm x 24m - 10m2 - Free Delivery
Delivery Time: 1-3 working days
10m2 Low-E Tab 16 Reflective Foil Insulation Roll gives a superior air infiltration barrier that reduces draughts and uncontrolled air movement and also increases thermal performance by blocking up to 97% of radiant heat. It is also a vapour control layer. Low-E Tab Reflective Foil Insulation&n..
£69.37
£83.24 inc VAT
Brand: Low-E Model and Size: 1.25m x 24m - 30m2 - Free Delivery
Delivery Time: 2 - 3 working days
30m2 Low-E Micro-E Reflective Foil Insulation Roll gives a superior air infiltration barrier that reduces draughts and uncontrolled air movement and also increases thermal performance by blocking up to 97% of radiant heat. It is also a vapour control layer. Micro-E Reflective Foil Insulati..
£160.79
£192.95 inc VAT
Brand: Low-E Model and Size: 1.25m x 24m - 30m2 - Free Delivery
Delivery Time: 1-3 working days
Low-E Micro-E Perforated gives you all the benefits of a reflective foil insulation, but the perforations are designed to allow moisture to pass through the product while limiting air movement. Low-E Perforated is recommended for use on the external sides of an insulati..
£160.79
£192.95 inc VAT
Brand: Low-E Model and Size: 1.25m x 12m - 15m2 - Free Delivery
Delivery Time: 1-3 working days
15m2 Low-E Ultra-E Reflective Foil Insulation Roll is a 11mm thick superior vapour control barrier that greatly reduces noise transmission, while the pure aluminium facings still reflect up to 97% of radiant heat. Low-E Ultra-E Reflective Foil Insulation is totally non-toxic and with no fibres,..
£151.88
£182.26 inc VAT
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..
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..
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..
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..
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: Xtratherm Model and Size: 2400x1200 - 2.88m2
Delivery Time: 1-3 working days
56mm Xtratherm FR/TP Ply is a composite insulated panel of 50mm Xtratherm Polyisocyanurate core with a composite foil face, bonded to 6mm WBP grade plywood board. Xtratherm FR/TP Ply is designed to provide high levels of thermal insulation and decking in one operation for new and refurbishment flat ..
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: Ceresit Model and Size: 280ml
Delivery Time: In Stock 1-2 working days
Ceresit CS-28 is a one-component thermo resistant flexible silicone sealant, resistant to temperature fluctuations from -65 ° C to +260 ° C, and even up to +315 ° C for a short time. It has very good adhesion to non-porous surfaces such as: metal, glass, wood, silicone resin, vulcanized silicone rub..
Brand: Ceresit Model and Size: 280ml
Delivery Time: In Stock 1-2 working days
Ceresit CS-38 is a one-component, high-temperature sealant resistant to direct contact with fire and temperature fluctuations up to +1,200 ° C, and for short periods even up to +1,500 ° C. It has very good adhesion to surfaces such as: concrete, cement mortars and plasters, bricks (also refractory),..
Brand: Ceresit Model and Size: 280ml
Delivery Time: In Stock 1-2 working days
Ceresit CS-7 is a one-component, flexible white sealant based on acrylic dispersion, used in filling and sealing joints, cracks and voids in all kinds of building materials. Ceresit CS 7 has high adhesion to any compact, porous and absorbent materials such as: aerated concrete, gypsum, sandstone, ch..
Brand: Ceresit Model and Size: 280ml
Delivery Time: In Stock 1-2 working days
Ceresit CS-8 is an universal Silicone Sealant CS 8 is used to fill gaps between building materials and finishing elements. It has excellent adhesion to ceramic tiles, wood, enamel, porcelain and painted surfaces. It is also used for sealing windows, doors, glass blocks, glass blocks, bathtubs, showe..
Brand: Ceresit Model and Size: 280ml
Delivery Time: In Stock 1-2 working days
Ceresit CS-9 is a sanitary silicone for filling joints between ceramic tiles and gaps at sanitary facilities in kitchens and bathrooms. It is permanently flexible, resistant to cleaning agents, moisture and weather conditions. Provides a tight connection in places where ordinary sealants crack. Cere..
Brand: Ceresit Model and Size: 280ml
Delivery Time: In Stock 1-2 working days
Ceresit CS-101 is a professional adhesive, sealant and polymer filler based on the Flextec technology - Henkel's patented state-of-the-art polymer-based technology that guarantees excellent gluing and sealing results for most materials. Ceresit CS-101 is characterized by high initial tack and fast c..
Brand: Ceresit Model and Size: 300ml
Delivery Time: In Stock 1-2 working days
Ceresit CS-11 Acrylic Sealant is used to fill joints, cracks and cavities in all kinds of walls, plaster and wood. It has high adhesion to any compact, porous and absorbent materials such as: aerated concrete, gypsum, sandstone, chipboards and plasterboards, and materials such as paint coatings, cer..
Brand: Pattex Model and Size: 290g
Delivery Time: In Stock 1-2 working days
Pattex One-for-All Crystal is a high-quality universal polymer adhesive and sealant, based on the Henkel's Flextec polymer technology. It is characterized by crystal transparency and is designed for all kinds of materials and surfaces. Pattex One-for-All Crystal glues and seals interior and exterior..
Brand: Pattex Model and Size: 440g
Delivery Time: In Stock 1-2 working days
Pattex One-for-All Instant-Grip is a high-quality universal polymer adhesive and sealant, based on the Henkel's Flextec polymer technology. Thanks to the Instant-Grip formula, it provides effective adhesion to objects without the need for long-term support (high initial adhesion up to 350 kg/m2 conf..
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..
Brand: Polyfoam XPS Model and Size: 1200x600mm - 30.24m2
Delivery Time: 5 - 7 days
56mm Polyfoam XPS Upstand Board is a high strength (kPA 200) extruded polystyrene laminated board used for the thermal insulation and protection of upstand and parapet walls. Polyfoam XPS Upstand board consists of a 50mm high performance rigid extruded polystyrene (XPS) with a tough, weather re..
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 ..
Brand: Polyfoam XPS Model and Size: 100m x 1.5m - 150m2
Delivery Time: 5 - 7 days
Polyfoam Slimline Zero Membrane - 1.5m x 100m is a high performance, thermally bonded tri-laminate of polypropylene waterproofing membrane  to be used over flat roof, inverted roofs and green roofs, to reduce the amount of rain water flowing between the insulation and the waterproofing mem..
Powerlon Ultraperm Lite 92gsm Breather Membrane 1.0m x 50m Roll
Guide Price
Brand: Powerlon Model and Size: 1.0m x 50m - 50m2
Delivery Time: 2 - 3 working days
Powerlon Ultraperm Lite 92gsm Breather Membrane is a high performance non-woven composite breathable underlays for all pitched roofs and timber frame wall applications. Powerlon Ultraperm Lite is tough, durable and tear resistant with exceptional water vapour permeability and water repellent charact..
Guide Price: £30.02
£36.02 inc VAT
Powerlon Ultraperm Standard 115gsm Breather Membrane 1.0m x 25m Roll
Guide Price
Brand: Powerlon Model and Size: 1.0m x 25m - 25m2
Delivery Time: Out Of Stock
Powerlon Ultraperm Standard 115gsm Breather Membrane is a high performance non-woven composite breathable underlays for all pitched roofs and timber frame wall applications. Powerlon Ultraperm Standard is tough, durable and tear resistant with exceptional water vapour permeability and water repellen..
Guide Price: £18.94
£22.73 inc VAT
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