This project, designed by Reed Watts Architects for the National Trust, involved creating a new visitor reception and retail space for the Grade I listed medieval manor house, Ightham Mote. The design sensitively integrates a low-impact structure into an historic walled garden.

Hero Materials

Hempcrete Blocks: It's an ultra-low-carbon alternative to traditional masonry, offering superior insulation and hygrometric balance (moisture regulation) for a healthy indoor environment.

Locally Sourced Timber: Used for the structural elements and external cladding. The building is clad in sweet chestnut sourced from locally coppiced timber, emphasizing low embodied energy and integration with the Kent landscape.

Lime Render & Limewash: Lime is breathable, essential for the Hempcrete walls, and provides a durable, natural aesthetic that complements the historic site.

Sustainability Highlights

Ultra-Low Carbon Construction: The use of hempcrete blocks delivers a durable, low-carbon structure with low embodied energy, aligning with the National Trust's environmental goals for conservation.

Thermal Performance & Comfort: The 400mm-thick hempcrete walls and high levels of insulation create excellent thermal and acoustic comfort, helping maintain stable indoor temperatures year-round and ensuring cost-effective operation.

Renewable Energy & Efficiency Systems: The building utilizes an air source heat pump for energy-efficient heating and incorporates passive ventilation to enhance air circulation and reduce overall energy consumption.

Sources:

https://www.reedwatts.com/projects/ightham-mote

https://hempblock.co.uk/case-study-ightham-mote