Can I Just Insulate Between the Rafters?
We will be looking at insulating pitched roofs and why insulation just between rafters isn’t viable
Knowledge Article4 min read
6 Great Marlborough Street forms part of Manchester’s rich industrial heritage. The five storey, red brick building was once part of the city’s thriving textile industry and sits within Little Ireland, the earliest area of Irish settlement within Manchester. Sheppard Robson’s sensitive restoration plans make a feature of the historic building fabric, exposing the original brickwork and beams internally, whilst incorporating more contemporary elements such as building services and modern windows.
LOCATIONManchester, UK
The design team targeted a Silver rating certificate under the RICS SKA Rating environmental assessment method. In order to upgrade the thermal performance of the poorly insulated pitched roof and to minimise heat loss, Kooltherm K107 was installed.
As the original roof slates have been retained, the Kooltherm K107 boards were cut to size by hand and fitted between and below the existing roof rafters from inside the building. This premium specification allowed the target U-value to be met with the slimmest possible construction – maximising floor to ceiling heights in the top storey spaces.
Kooltherm K107 is produced under an integrated management system which is certified to ISO 9001: 2015 (Quality), ISO 14001: 2015 (Environmental), ISO 37301: 2021 (Compliance), ISO 45001: 2018 (Health and Safety) and ISO 50001: 2018 (Energy).
Images: Manchester Metropolitan University©
Page updated: 5/11/2025
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