At the northern edge of the Cotswolds is the sleepy village of Upper Quinton – not the kind of place you’d expect to find a house that redefines the rules. A celebration of modern timber design and engineering techniques, Larch Corner is a timber lover’s dream. Almost all of this modern, three-bedroom, single-storey home is built of sustainably sourced timber, reducing emissions during processing and manufacture, and carbon emissions in use.

The structure is built from 35 internally exposed cross-laminated timber (CLT) panels, held together by 21,000 screws. With its Air Permeability of 0.041 m3/hr/m2@50Pa, Larch Corner is 195 times more airtight than required by the Building Regulations. Speaker Mark Siddall will reveal the design and construction process as well as the lessons learned from 12 months monitoring from Larch Corner, the winner of the 2021 Small Projects UK Passivhaus Award.

About the Speaker

Mark Siddall

An award-winning Passivhaus architect with over 35 years experience in the construction industry, Mark Siddall is one of the pioneers that brought Passivhaus to the U.K. Through his architectural practice LEAP, Mark and his team help self-builders, homeowners and communities by designing new homes and retrofits which are sensitive to the local area and reflect a high standard of architecture.

With a keen interest in building performance issues of usability and practicality inform his approach and have increasingly led to an appreciation of the need for an integrated design process. Mark is a technical advisor to the Passivhaus Trust, has delivered lectures and training in the USA, New Zealand, Germany and the UK and contributed to peer reviewed research.

You can learn more about Mark's work on his website, the LEAP website, as well as on Twitter and Instagram.