Thermal Performance
Pitched Roof Insulation
Save On Energy Bills
Building Regulation Compliant
Pitched roof insulation is designed to be applied within the confines of pitched roofs, aiming to enhance the thermal efficiency of residential and commercial structures. These specialised materials are often comprised of cutting-edge, high-performance substances, such as rigid polyisocyanurate (PIR), which boast foil facings on both sides. Additionally, alternative options such as mineral wool and various forms of insulation might be suitable based on the chosen installation technique. Kingspan manufactures specialist boards for pitched roofs, such as the K107. At Trade Insulations, we take pride in offering the most competitive prices for pitched roof insulation solutions. We understand the pivotal role that insulation plays in elevating the energy efficiency and comfort of a building, and our commitment to providing the finest pitched roof insulation products.
Enhance your building’s insulation performance with Trade Insulations.
Celotex 100mm PIR Insulation Board – GA4100 (2400mm x 1200mm x 100mm) 2.88m2
Original price was: £65.99.£39.65Current price is: £39.65.
100mm Recticel GP Insulation Boards (1200x2400mm) – 2.88m2
Original price was: £70.99.£39.91Current price is: £39.91.
Celotex 37.5mm Insulated Plasterboard (2400mm x 1200mm x 37.5mm) – PL4025
Original price was: £70.50.£41.50Current price is: £41.50.
Knauf 100mm Loft Roll 44 – Combi Cut (13.89m2 Roll)
Original price was: £42.68.£32.24Current price is: £32.24.
Soprema 100mm PIR Insulation Board – Sopratherm GA4100 (2400mm x 1200mm x 100mm) 2.88m2
Original price was: £65.99.£39.65Current price is: £39.65.
100mm Kingspan TP10 Thermapitch PIR Insulation Board (2400 x 1200mm) – 2.88m2
Original price was: £75.62.£53.44Current price is: £53.44.120mm Celotex Insulation Board – XR4120 (2400mm x 1200mm x 120mm) 2.88m2
Original price was: £90.52.£49.35Current price is: £49.35.
25mm Kingspan TP10 Thermapitch PIR Insulation Board (2400 x 1200mm) – 2.88m2
Original price was: £33.26.£20.99Current price is: £20.99.
25mm Recticel GP Insulation Boards (1200x2400mm) – 2.88m2
Original price was: £31.82.£15.25Current price is: £15.25.50mm Celotex Insulation Board – GA4050 (2400mm x 1200mm x 50mm) 2.88m2
Original price was: £43.78.£23.15Current price is: £23.15.50mm Recticel GP Insulation Boards (1200x2400mm) – 2.88m2
Original price was: £44.66.£23.42Current price is: £23.42.70mm Recticel GP Insulation Boards (1200x2400mm) – 2.88m2
Original price was: £61.94.£32.99Current price is: £32.99.
75mm Celotex Insulation Board – GA4075 (2400mm X 1200mm X 75mm) 2.88m2
Original price was: £60.91.£32.75Current price is: £32.75.75mm Kingspan TP10 Thermapitch PIR Insulation Board (2400 x 1200mm) – 2.88m2
Original price was: £64.03.£44.62Current price is: £44.62.
Celotex 52.5mm Insulated Plasterboard (2400mm x 1200mm x 52.5mm) – PL4040
Original price was: £85.14.£51.95Current price is: £51.95.
Kingspan K107 50mm Pitched Roof Insulation Board (2400 x 1200mm) – 17.28m2 pack
Original price was: £415.89.£351.78Current price is: £351.78.Kingspan Thermafloor Insulation Board TF70 – 100mm – 2400x1200mm – 2.88m2
Original price was: £75.62.£53.44Current price is: £53.44.
Knauf 150mm Loft Roll 44 – Combi Cut (9.18m2 Roll)
Original price was: £42.68.£32.24Current price is: £32.24.
Knauf 170mm Loft Roll 44 – Combi Cut (8.01m2 Roll)
Original price was: £42.09.£32.24Current price is: £32.24.
Soprema 37.5mm Sopratherm Insulated Plasterboard (2400mm x 1200mm x 37.5mm) – PL4025
Original price was: £70.50.£41.50Current price is: £41.50.
120mm Soprema Insulation Board – Sopratherm XR4120 (2400mm x 1200mm x 120mm) 2.88m2
Original price was: £90.52.£49.35Current price is: £49.35.
150mm Celotex Insulation Board – XR4150 (2400mm x 1200mm x 150mm) 2.88m2
Original price was: £107.09.£59.45Current price is: £59.45.50mm Soprema Insulation Board – Sopratherm GA4050 (2400mm x 1200mm x 50mm) 2.88m2
Original price was: £43.78.£23.15Current price is: £23.15.70mm Celotex Insulation Board – GA4070 (2400mm x 1200mm x 70mm) 2.88m2
Original price was: £60.74.£32.65Current price is: £32.65.
75mm Soprema Insulation Board – Sopratherm GA4075 (2400mm X 1200mm X 75mm) 2.88m2
Original price was: £60.91.£32.75Current price is: £32.75.80mm Celotex Insulation Board – GA4080 (2400mm X 1200mm X 80mm) 2.88m2
Original price was: £68.59.£36.45Current price is: £36.45.80mm Recticel GP Insulation Boards (1200x2400mm) – 2.88m2
Original price was: £69.96.£36.74Current price is: £36.74.90mm Recticel GP Insulation Boards (1200x2400mm) – 2.88m2
Original price was: £76.26.£40.42Current price is: £40.42.Celotex 62.5mm Insulated Plasterboard (2400mm x 1200mm x 62.5mm) – PL4050
Original price was: £92.09.£55.65Current price is: £55.65.
Celotex 72.5mm Insulated Plasterboard (2400mm x 1200mm x 72.5mm) – PL4060
Original price was: £104.27.£59.99Current price is: £59.99.Celotex 77.5mm Insulated Plasterboard (2400mm x 1200mm x 77.5mm) – PL4065
Original price was: £153.20.£64.99Current price is: £64.99.Kingspan Thermafloor Insulation Board TF70 – 70mm – 2400x1200mm – 11.52m2 pack
Original price was: £305.84.£169.16Current price is: £169.16.Kingspan Thermafloor Insulation Board TF70 – 75mm – 2400x1200mm – 2.88m2
Original price was: £64.03.£44.62Current price is: £44.62.Knauf 200mm Loft Roll 44 – Combi Cut (6.84m2 Roll)
Original price was: £42.68.£32.24Current price is: £32.24.Soprema 52.5mm Sopratherm Insulated Plasterboard (2400mm x 1200mm x 52.5mm) – PL4040
Original price was: £85.14.£51.95Current price is: £51.95.140mm Celotex Insulation Board – XR4140 (2400mm x 1200mm x 140mm) 2.88m2
Original price was: £108.80.£59.99Current price is: £59.99.150mm Soprema Insulation Board – Sopratherm XR4150 (2400mm x 1200mm x 150mm) 2.88m2
Original price was: £107.09.£59.45Current price is: £59.45.60mm Recticel GP Insulation Boards (1200x2400mm) – 2.88m2
Original price was: £55.31.£30.08Current price is: £30.08.70mm Soprema Insulation Board – Sopratherm GA4070 (2400mm x 1200mm x 70mm) 2.88m2
Original price was: £60.74.£32.65Current price is: £32.65.80mm Soprema Insulation Board – Sopratherm GA4080 (2400mm X 1200mm X 80mm) 2.88m2
Original price was: £68.59.£36.45Current price is: £36.45.Celotex 25mm PIR Insulation Board – TB4025 (2400mm x 1200mm x 25mm) 2.88m2
Original price was: £31.82.£15.25Current price is: £15.25.Kingspan K107 75mm Pitched Roof Insulation Board (2400 x 1200mm) – 11.52m2 pack
Original price was: £409.20.£346.74Current price is: £346.74.Soprema 62.5mm Sopratherm Insulated Plasterboard (2400mm x 1200mm x 62.5mm) – PL4050
Original price was: £92.09.£55.65Current price is: £55.65.
100mm Ecotherm Eco Versal Insulation Board (1200x2400mm) 2.88m2
Original price was: £65.99.£39.65Current price is: £39.65.140mm Soprema Insulation Board – Sopratherm XR4140 (2400mm x 1200mm x 140mm) 2.88m2
Original price was: £108.80.£59.99Current price is: £59.99.
150mm Mannok PIR Insulation Board (1200x2400mm- ) 2.88m2
Original price was: £107.09.£59.45Current price is: £59.45.150mm Recticel GP Insulation Boards (1200x2400mm) – 2.88m2
Original price was: £109.18.£59.79Current price is: £59.79.30mm Celotex Insulation Board – TB4030 (2400mm x 1200mm x 30mm) 2.88m2
Original price was: £37.25.£17.99Current price is: £17.99.Insulation For Pitched Roofs
At Trade Insulations, we supply the nation with pitched roof insulation. This ranges from mineral wool to PIR boards. You can find and order the perfect product online in minutes. We offer trade prices to the public and provide express delivery on many of our products. All lead times can be found on our product page. Use our secure checkout and get your pitched roof insulation delivered directly to your site, home or project. We have made the ordering process simple and easy.
A pitched roof is a roof that is built at an angle rather than being completely flat. Pitched roofs are one of the most common roof types that are used in houses in the UK. Many pitched roofs have two sloping sides that meet at the highest point. This is known as a ridge. This roof angle helps rainwater drain away efficiently. The space beneath the roof often forms the loft. Insulation is typically installed at the ceiling level or between and below the rafters, depending on how the roof space is being used. The correct installation is important to help minimise gaps and reduce thermal bridging, and maintain adequate ventilation that is required within the roof structure.
The benefits of insulating a pitched roof
A building without roof insulation can lose up to 25% of heat. This statistic is clear evidence of the importance of roof insulation. Insulating a pitched roof has many benefits. This includes improving a building's energy efficiency and overall comfort. Effective pitched roof insulation reduces heat loss during colder months and heat gain during warmer months. This means there is a reduction in reliance on heating and cooling systems, therefore potentially reducing energy costs. A reduction in energy usage also leads to lower carbon emissions. Lower carbon emissions result in a lower carbon footprint, which is better for the environment. A well-insulated building will also have a better energy performance rating, which is desirable in the housing market.
The difference between a cold pitched roof and a warm pitched roof?
Insulating between rafters of a pitched roof is a common way to effectively insulate your roof. When it comes to choosing pitched roof insulation between rafters, you should first know if you want to create a cold pitched roof or a warm pitched roof. If you are unsure, then we suggest that you consult a building professional.
The major difference between a cold pitched roof and a warm pitched roof is the location of the insulation itself. In a warm roof, the insulation is located above and between the rafters. This is to keep the rafters warm. Whereas a cold roof features insulation which is typically laid horizontally at the ceiling joist level or between and below the interior rafters.
A warm pitched roof design aims to envelop the entire building structure in warmth, eliminating any potential cold bridging. This approach involves incorporating a continuous layer of insulation positioned above the rafters and directly beneath the weatherproof membrane. Embracing a warm roof construction offers numerous advantages over the more conventional “cold roof” approach. Essentially constituting a “breathable roof construction,” it facilitates moisture escape, effectively thwarting dampness and the subsequent issues of decay. By conserving heat within the property, a warm roof construction eliminates the necessity for a ventilation system.
A warm roof design is common in the UK. Premium-performance phenolic insulation boards and high-performance PIR insulation boards are ideal. These boards are suitable for insulating roof spaces in both warm and cold pitched roofs, positioned under tiles or slates. This includes Celotex PIR boards as well as specialist boards such as Kingspan's K107 pitched roof insulation.
In a cold pitched roof configuration, insulation is typically situated either between the interior rafters or a combination of between and under them. If your residence is within an old building, your roofing underlay might consist of sarking felt. In such cases, it becomes necessary to allocate a gap for ventilation between the insulation and the upper portion of the rafters. For cold pitched roof systems, it is recommended by Kingspan to use a product such as Kingspan’s K118 insulated Plasterboard.
Types Of Pitched Roof Insulation
On our website, you will find many types of pitched roof insulation. This includes specialist phenolic boards like the Kingspan K107 to general-purpose Celotex PIR boards. Below you can find a breakdown of popular pitched roof products.
Kingspan Kooltherm K107
Kingspan’s K107 pitched roof insulation board is a premium phenolic board by Kingspan. It is purposely designed for pitched roof applications. It boasts excellent thermal performance, which can be achieved with a relatively thin layer of insulation. The K107 board itself can be installed between, above or below rafters depending on the type of roof construction.
Celotex General Purpose PIR Insulation Boards
Celotex PIR boards are one of the most popular insulation products on the market. They are highly versatile and can be used in a number of applications, which include pitched roofs. The GA4000 and XR4000 are most commonly used in pitched roof applications as they are thicker variations of the general purpose PIR board. These boards achieve a thermal conductivity of 0.022 W/mK, providing strong thermal performance while keeping insulation thickness relatively low. They are available in many thicknesses to suit your project.
Kingspan Thermapitch TP10
Kingspan Thermapitch TP10 is a PIR insulation board which can be used in pitched roof applications. Similar to the Celotex PIR boards, they achieve a thermal conductivity of 0.022 W/mK. TP10 is commonly found in new build and refurbishment projects and can be used within different pitched roof constructions. Unlike Kingspan’s K107 boards, the TP10 is made from PIR.
ROCKWOOL FLEXI Insulation Slabs
Some project specifications may include mineral wool, and the Rockwool Flex range is a good option for insulating between timber rafters. The slabs themselves feature a flexible edge, which enables them to fit snugly against the surrounding timber. This can help to reduce gaps within the insulation layer. Rockwool Flexi also has good acoustic performance and is classed as non-combustible. This makes it useful where fire and sound performance are important factors.
Knauf Loft Roll 44
Knauf Loft Roll 44 is a very popular loft insulation product. It can be used to insulate cold pitched roofs at the ceiling level. It can be laid between or over ceiling joists to create a thick layer of insulation across the floor of the loft. It has a thermal conductivity of 0.044 W/mK and is straightforward to install, especially where there is plenty of available loft space.
Kingspan K118 Insulated Plasterboard
The Kingspan Kooltherm K118 is a high-performance phenolic board, which is combined with plasterboard. The end result is a 2-in-1 product that provides both plasterboard and insulation in a single board. It is commonly used for internal wall insulation, however, it can also be useful within loft conversions and pitched roof projects where insulation is required on the internal face of the build.
Buy Pitched Roof Insulation
At Trade Insulations, we specialise in providing low-cost pitched roof insulation. We offer trade prices, and the bonus is that you don’t need to be in the trade to qualify. The prices on our website are our rock bottom prices, as we pass our bulk savings directly onto you. We have refined our website to make it even easier to buy pitched roof insulation. Simply find the product you need, add it to your cart and checkout in minutes.
All of our pitched roof insulation product pages feature detailed technical specifications, datasheets, prices and lead times. If you are unsure on which product you require, then we suggest speaking to a building professional or architect for confirmation on what you need for your project before placing your order.