Cookie Privacy Preferences
We utilize essential cookies to ensure our website operates effectively and remains secure. Additionally, we'd like to request your permission to use optional cookies. These are intended to enhance your browsing experience by offering personalized content, displaying advertisements that are relevant to you, and helping us to further refine our website.
Choose "Accept all cookies" to agree to the use of both essential and optional cookies. Alternatively, select "Let me see" to customize your preferences.
Privacy Preference Centre
Our website utilizes cookies to enhance your browsing experience and to present you with content tailored to your preferences on this device and browser. Below, you will find detailed information about the function of cookies, enabling you to make informed choices about which cookies you wish to accept. Please note that disabling certain cookies might impact your user experience on our site. It's important to remember that cookie preferences need to be set individually for each device and browser you use. Clearing your browser's cache may also remove your cookie settings. You have the freedom to modify your cookie preferences at any point in the future.
For a comprehensive understanding of our use of cookies, please refer to our complete cookies policy.
These cookies are needed for the website to work and for us to fulfil our contractual obligations. This means they can't be switched off. They enable essential functionality such as security, accessibility and live chat support. They also help us to detect and prevent fraud. You can set your browser to block or alert you about these cookies, but it means some parts of the site won't work.
These cookies allow us to measure and improve the performance of our site. They help us to know how popular pages are, and to see how visitors move around the site. If you don't allow these cookies, we won't know when you've visited our site, and we won't be able to monitor its performance.
These cookies enable us to provide enhanced functionality and personalisation. They may be set by us or by third party providers whose services we've added to our pages. If you don't allow these cookies, some or all of these services may not work properly.
These cookies collect information about your browsing habits to show you personalised adverts. They may be used to build a profile of your interests and show you relevant adverts on other sites. They don't store directly personal information, but are based on uniquely identifying your browser and internet device. If you don't allow these cookies, the adverts you see will be less relevant.
EPDM Rubber Roofing
Torch On Felt Roofing
Vapour Barriers
GRP Roofing
Liquid Roofing
Insulation Boards
Flat Roof Insulation Boards
Tapered Insulation Boards
Insulated Plaster Boards
Acoustic Roll Insulation
Tablet
Mobile
EPDM Rubber Roofing
Torch On Felt Roofing
Vapour Barriers
GRP Roofing
Liquid Roofing
Insulation Boards
Flat Roof Insulation Boards
Tapered Insulation Boards
Insulated Plaster Boards
Acoustic Roll Insulation
50 Years Experience
Spread the Cost
UKFR - ROOFING AND INSULATION SPECIALISTS
Improve your home’s energy efficiency with lightweight & high-performance Celotex Insulation boards.
Celotex PIR is available in varying thicknesses and designed with low-emissivity foil facings to ensure excellent thermal performance wherever installed. Shop the range below and receive fast delivery from our UK branches
UKFR - ROOFING AND INSULATION SPECIALISTS
Improve your home’s energy efficiency with lightweight & high-performance Celotex Insulation boards. Celotex PIR is available in varying thicknesses and designed with low-emissivity foil facings to ensure excellent thermal performance wherever installed.Shop the range below and receive fast delivery from our UK branches.
Featured Products
Showing products per page
Get a Quote
Planning your next project and need cost assistance. We help projects of all sizes and offer money-saving alternatives and discounts for large orders. We strive to respond within 24 hours.
Celotex offers a wide range of high-performance polyisocyanurate insulation boards in varying thickness from 20mm to 200mm, making them suitable for roof, wall, floor and ceiling applications. They all feature low-emissivity foil facings and have a low thermal conductivity of 0.022 W/m.K, helping you achieve the required U-value needed in UK building regulations.
The boards share the same dimensions of 2400mm x 1200mm, only differing in thickness:
Celotex PL4000 (Celotex Insulated Plasterboard)
Suitable for: Roof & internal wall lining
Dimensions: 2400mm x 1200mm
Available thickness: 37.5mm, 52.5mm, 62.5mm, 72.5mm
Celotex Thermaclass Cavity Wall 21
Suitable for: Cavity walls
Dimensions: 1190mm x 450mm
Available thickness: 90mm
Suitable for: Floor, wall & pitched roofs
Dimensions: 2400mm x 1200mm
Available thickness: 20mm, 25mm, 30mm, 40mm.
Celotex GA4000 (multi-purpose insulation board)
Suitable for: Pitched roofs, walls and floors
Dimensions: 2400mm x 1200mm
Available thickness: 50mm, 60mm, 70mm, 75mm, 80mm, 90mm, 100mm
Suitable for: Floors, walls & pitched roofs
Dimensions: 2400mm x 1200mm
Available thickness: 120mm, 150mm
Available thickness in (bulk buy): 110mm, 120mm, 130mm, 140mm, 150mm, 165mm, 200mm
Please note this will depend on stock availability. If we currently do not have the thickness you seek in stock, please get in contact with us and a member of our team will be happy to assist.
Celotex is a game-changing brand for insulation, offering a handful of benefits whilst remaining relatively thin compared to other sources of insulation. Some of these benefits include:
Certified
Celotex TB4000 has been assessed by the BBA as fit for use in defined roof, wall and floor applications if installed, used and maintained as set out in the certificate. It has also achieved a BRE Green Guide Rating of A.
Excellent Thermal Performance
Thermal conductivity of 0.022W/m.K reduces required thickness for target U-value
High-Performance Facer
Low emissivity foil facing improves achievable U-value in sealed cavity air spaces
Easy Installation
They are lightweight & rigid making them easy to cut down to size, transport, handle and fit.
Cost-saving
Excellent thermal performance reduces your energy consumption
Insulation boards are designed to retain heat within the structure of your home to ultimately keep you warmer when you need it most.
Important fire rating note: Celotex PIR insulation, alongside other PIR brands, has a fire-resistance rating of Euroclass F - meaning it will combust easily when reacting to a fire. If you require fire-resistant insulation, check out our A1 classified wool insulation which includes mineral wool and fibreglass insulation.
Celotex insulation helps significantly reduce thermal bridging and is suitable for various building applications and construction projects including:
Pitched Roof
Flat Roofs
Internal Walls
Ground Floors
UKFR is a proud and trusted UK supplier of PIR insulation boards & materials, with happy and returning customers across the country benefiting from fast nationwide delivery.
With over 50 years of experience, we’ve seen it all and are highly knowledgeable in a wide range of flat roof systems.
If you need any help with your order or have a question about a project, get in touch with us today via WhatsApp or drop us an email at sales@ukflatroofing.com.
Celotex insulation boards are made from polyisocyanurate (PIR) foam and have a foil facing on each side. Created by combining polyisocyanurate resin with a blowing agent, it creates a chemical reaction, making the foam insulation. This foam is placed between two emissivity aluminium foil facings and can be cut down to size to suit a variety of building projects including roofs, walls, and underfloor heating.
All of the boards are the same PIR boards. The codes refer to the thicknesses.
The thickness of insulation required will depend on many factors including the U-value required, the size and shape of the building element, and the type of insulation being used. Many online calculators can help you determine the appropriate thickness for your project; alternatively, don’t hesitate to get in contact with us and we will be happy to assist.
Celotex insulation boards have a Euroclass rating of F, which is considered the worst rating in terms of combustibility. However, it’s important to note that poor Euroclass ratings do not mean the material is unsuitable for home use.
The rating simply means it will not stop the spread of fire, so using fire-resistant materials in conjunction with Celotex PIR insulation products is ideal.
Celotex can be a great alternative to Kingspan insulation products. Please note Celotex is not a flat roof board and can not be used as an alternative to flat roof insulation boards.
Yes! All insulation needs a vapour barrier which should be installed on the warm/internal side of the insulation.
R-value measures how resistant a material is to heat flow; the higher the R-value, the greater the thermal resistance of the material.
U-value measures the rate heat flows through a building element, such as a wall, floor, or roof; the lower the U-value, the more effective the building element is at preventing heat loss or gain.
Insulation boards are easy to cut down but must be done safely to avoid damage. When cutting to size, use a fine-toothed saw or sharp knife, snapping the board over a straight edge and cutting the facing on the other side.
schema