Kingspan Insulation - Reeds Mill - Kent

Reeds Mill - Kent

Kingspan Group Kingspan Insulation

Kingspan featured on Channel 4 mill restoration project

Over 900 m2 of products from Kingspan Insulation’s Kooltherm and Therma ranges have been installed as part of the restoration of an 19th century windmill, featured on Channel 4’s Restoration Man series.

Reeds Mill in Kent was constructed in the 1820s and had stood as an empty shell for 95 years after a storm blew off the cap and sails in 1915. 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 Kingspan Insulation’s premium performance Kooltherm range were installed by main contractors R.J. Gibbs & Sons.

For the roof build-up on both the barn and mill 80 mm thick Kooltherm K7 Pitched Roof Board was fitted between the roof rafters. This was followed by a further 37.5 mm of 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.

A similar approach was used for the wall build-ups with 50 mm of 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.

Architect David Benge commented on the project “David Benge Design Associates enjoy specialising in projects where there is the opportunity to blend the traditional with modern. The mill restoration maintains the integrity of the building while also incorporating it into a larger home.”

“Kingspan Insulation’s products helped deliver the thermal performance required on the project and met the key challenge of insulating the circular mill building. Their technical team’s ability to turn around thermal calculations to suit the variable situations where insulation was required was also of great benefit to the project.”

Energy efficiency was a key priority on the building and several other features including a wind generator, solar thermal panels and an air-source heat pump were also fitted. The project is one of several from Channels 4’s Restoration Man series to feature Kingspan Insulation products.

Sadly during the restoration Pete and his family lost Nikki, his wife, 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.

* Please note that Kingspan Kooltherm K18 Insulated Plasterboard is no longer available for specification. Instead refer to Kingspan Kooltherm K118 Insulated Plasterboard.