Reeds Mill

Over 900 m² of Kooltherm and Therma products were installed as part of the restoration of a 19th century windmill, as featured on Channel 4’s Restoration Man series.

The Project

The land on which the mill stands has been owned by the Fagg family for 100 years, and Pete and Nikki Fagg decided to take on the challenge of converting it into a home.

Due to the building’s small footprint, the restoration was combined with the construction of a three bedroom, oak framed barn which incorporates a glazed link between the barn and mill tower. To minimise heat loss a number of products from our premium performance Kooltherm range were installed.

Kingspan Kooltherm K7 Pitched Roof Board, Kooltherm K12 Framing Board, Kooltherm K18 Insulated Plasterboard and Thermafloor TF70
RJ Gibbs & Sons
David Benge Design Associates
For the roof build-up on both the barn and mill 80 mm thick Kingspan Kooltherm K7 Pitched Roof Board was fitted between the roof rafters. This was followed by a further 37.5 mm of Kingspan Kooltherm K18 Insulated Plasterboard beneath the rafters, helping to minimise thermal bridging. The combination of these two products is expected to deliver a final U-value performance of approximately 0.22 W/m²·K.
Kingspan Insulation’s products helped deliver the thermal performance required on the project and met the key challenge of insulating the circular mill building.

David Benge - Architect, David Benge Associates
A similar approach was used for the wall build-ups with 50 mm of Kingspan Kooltherm K12 Framing Board installed between the wall studs and a further 50 mm installed outside them, again reducing thermal bridging. The boards were able to be curved and bent to meet the challenging angles presented by the circular mill tower walls as well as delivering outstanding performance with thermal conductivities as low as 0.020 W/m·K.

Finally, 90 mm thickness of Thermafloor TF70 was also installed over the ground level floor slab to complete the building envelope.
Kingspan Insulation's technical team’s ability to turn around thermal calculations to suit the variable situations where insulation was required was of great benefit to the project.

David Benge - Architect, David Benge Associates
Sadly, during the restoration Pete and his family lost Nikki to cancer. Nikki’s Trust has been set up in her memory to promote awareness of and accessibility to the HPV vaccine that can prevent cervical cancer, as well as working with palliative care specialists to help improve the lives of those suffering with bone cancer pain. Please visit to donate and support the trust directly.

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