New build Passivhaus in Barnsley features FAKRO windows

  • 20 Sep 2023

Sort Trae is a new build Passivhaus set in a steeply sloping site in Thurgoland, Barnsley. It features FAKRO flat roof windows…

The owner is a former architect and designed the scheme up to planning. HEM Architects were commissioned to turn the design intent into an ultra-low energy and comfortable home and to administer the contract on site.

The house is a 2-bed home, with the lower storey set into the hill. There is an attached weaving studio where the owner works. The house takes advantage of the beautiful views to the south and is a bold, contemporary home clad in black timber and open-jointed stone.

The rooflights set on top of the studio are a key part of the roof, visible from the entrance to the site and the house. Their crisp design met the architects desire for an elegant and unfussy roofscape.


FAKRO flat roof windows were chosen for their thermal performance and the performance of the integrated kerbs.

Paul Testa, Director at HEM Architects. comments: “We have always specified FAKRO on our projects where possible. They have always led the market in terms of thermal performance and there is excellent technical support.”

The FAKRO windows used were:

2 x FAKRO DXF-DU6 02K flat roof window. 600 x 900mm unit size.

1 x FAKRO DXF-DU6 11k flat roof window. 1200 x 2200mm unit size.

1 x FAKRO DXF-DU8 04k flat roof window. 800 x 800mm unit size.

Paul adds: “We enjoy working with FAKRO and find that the products are delivered to site very well packaged and are very easy to install. Working directly with the manufacturer rather than builders’ merchants also means the contractor has much better manufacturer support should they need it.”


HEM Architects is a practice of 10 staff, based in Sheffield. They have a reputation for Passivhaus design and gaining planning on difficult sites.

The practice is on a mission to help everyone live in beautiful, practical homes that have minimal impact on our planet. They specialise in creative, sustainable residential architecture. Taking inspiration from the mess and joy of everyday life, they design homes for living and that delight every day.

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