UK-based architectural firm Hamson Barron Smith have built a ground-breaking Passivhaus development in Greater Norwich, UK. The Carrowbreck Meadow project includes 14 ultra-sustainable homes, which have been designed to pay homage to the local rural barn vernacular found in the area. The Passivhaus development is the largest of its kind in the area, but will also serve as a benchmark for sustainable building everywhere because 43% of the development is comprised of affordable housing.
Built in the traditional barn style, the Carrowbreck Meadow homes are clad in a mix of white render and black-stained timber. The A-frame roofs are covered in either slate or red roof tiles. Wood used in the construction was 100% locally sourced from sustainable northern forests. Additional sustainable features include using low-carbon materials where possible such as the insulation in the roofs, which is made out of recycled newspaper. Local contractors and subcontractors were also hired for the job to reduce the project’s carbon footprint. All of the homes are installed with electric car charging points, rainwater butts and PV connection points. The master plan also includes a unique waste management system that facilitates reusing and recycling processes for the homeowners.
Located in a heavily wooded lot, the positioning and orientation of the homes was strategic in order to take advantage of solar gain in the wintertime and avoid extreme heat in the summer. The homes are installed with an abundance of windows that let in natural light, but are equipped with venetian blinds and brise soleils to provide shade. A heat recovery system provides fresh filtered air throughout the structures.
The green building materials and low energy features used in the development, as well as the homes’ integrated thermal bridges and draft-free building envelopes – which is five time over the strict passivehaus regulations for airtightness – have earned the project a full Passivehaus certification.
However, the fact that the development includes a high number of affordable homes really makes the Carrowbreck Meadow project unique. By offering 43% percent of the property as affordable housing, the architects hope to not only provide locals with sustainable and energy efficient options, but one that fosters a strong inclusive atmosphere as well.
The Carrowbreck Meadow development design was recognized with a RIBA Eastern Region Design Award in May 2017.
Images via Hamson Barron Smith