House-within-a-house
1950s house within a Victorian conservation zone has been cocooned in roof, floor & wall insulation
Case Study5 min read
Barden Marina offers an idyllic setting for a new development of three and four-bedroomed houses and two-bedroomed apartments from Barnfield Homes.
LOCATIONBurnley, UK
ArchitectBarnfield Homes
ProductsKooltherm K108 Cavity Board
Situated on the site of a former weaver’s mill, the estate is within easy walking distance of Burnley town centre and backs directly onto the Leeds & Liverpool Canal, offering homeowners stunning views out across the local Lancashire countryside.
When creating the plans for the new development, the project team were eager to ensure that the homes respected the heritage of the site and the adjoining canal, whilst also providing all the benefits of modern construction. For this reason, Barnfield Construction incorporated traditional features such as stone lintels and slate tiles into the properties whilst specifying Kooltherm K108 Cavity Board for the external walls of the homes and townhouses to provide excellent insulating performance.
The rigid insulation boards deliver a thermal conductivity of 0.019 W/mK, allowing the desired thermal performance to be achieved with a minimal product thickness. They also feature a low emissivity foil facing which raises the thermal resistance of the cavity, helping to prevent overheating in the warmer months.
At Barden Marina, the 75 mm Kooltherm K108 boards were fitted flush with the inner blockwork construction using wall ties and retaining clips. A further 50 mm cavity was then retained between the insulation and the outer blockwork, helping to meet National Housebuilding Council technical requirements. Despite the slim thickness of the insulation, their excellent thermal performance allowed the walls to achieve a design U-value of 0.018 W/mK.
The Barden Marina site offers a beautiful natural setting, which is enhanced by its rich industrial heritage and we worked hard to ensure the properties do justice to it. Each building has been completed to a high specification throughout and the use of Kooltherm K108 Cavity Board ensured we could achieve an excellent level of thermal performance whilst maintaining a slim external wall construction – helping to create spacious interiors.
Charlotte Pickup, Marketing Manager for the Barnfield Group
Page updated: 5/11/2025
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