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Insulation is an important part of any roof replacement or roof upgrade. A properly insulated roof helps reduce heat loss, improve energy efficiency and make the property more comfortable throughout the year.
Where roofing works involve upgrading or replacing a roof, Building Regulations may require the insulation to be improved so the roof meets current thermal performance standards. This is usually assessed through the required U-value, which measures how well the roof prevents heat from escaping. Approved Document L sets the energy-efficiency requirements for dwellings in England.
At Oakley Improvements, we can advise on suitable insulation options depending on the property, roof structure, budget and whether the loft is being used as a cold roof space, storage area or habitable room.
Knauf Earthwool is a high-quality glass mineral wool insulation commonly used at ceiling level in cold pitched roofs. It is a practical and effective option for upgrading loft insulation, helping to improve the thermal performance of the home while remaining cost-effective.
Knauf’s Loft Roll 44 is designed for insulating cold pitched roofs at ceiling level, has a thermal conductivity of 0.044 W/mK, and is non-combustible with Euroclass A1 reaction to fire classification.
This is a good option where the loft space is not being used as a habitable room and insulation is required across the loft floor.
Celotex is a premium PIR rigid insulation board option, often used where a higher level of thermal performance is required within a tighter space.
PIR boards can be installed between and/or under rafters as part of a pitched roof insulation system, making them particularly useful for loft conversions, room-in-roof spaces and projects where Building Control U-value requirements need to be met. Celotex describes between-and-under-rafter insulation as a popular pitched roof solution, and its PIR boards offer lambda values as low as 0.022 W/mK.
Celotex is often a stronger option where the roof space is being converted, upgraded for regular use, or where improved insulation performance is needed without relying solely on mineral wool at ceiling level.
Ready to improve your home or business with top-quality Knauf insulation? Contact Oakley Improvements today! Our team of experts is here to answer any questions and provide a free consultation to assess your insulation needs. You can reach us by phone at 0800 669 6090, email us at admin@oakleyimprovements.com or fill out our contact form here. We look forward to helping you achieve a more comfortable, energy-efficient, and safe environment. Let Oakley Improvements be your trusted partner for all your insulation projects!
