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| Brooklands

Situated on a stunning site in the green belt, south of Sheffield, we have worked closely with the clients to amend an existing planning application to create a modern, flexible and energy efficient project that is connected to the surrounding landscape.

The project focuses particularly on the use of materials and celebrates locally handmade brickwork. We have carefully articulated details to ensure the revised design is bespoke, crafted and fitting with the landscape.
Connections between inside and outside spaces link the cosy interior with the clients productive gardens. Carefully placed picture windows frame views onto the landscape beyond. 
Using the Passivhaus Planning Package we have adjusted the design to ensure a comfortable living environment that has extremely low running costs and a well-balanced use of daylight.
Our clients are thrilled with the completed project, and so are we!

Project Factfile:

​Project Stage:                   Complete 2021
Location:                             Sheffield, South Yorkshire.
Architecture:                  Croft Design Collective LLP
Main Contractor:             Glebe Construction 
Structural Engineer: ​     NashMead 
MVHR:                             Green Building Store
​Annual Heat Demand:  20 kWh/m2a (Design Stage)
Air Tightness:                    1.5 Ach @50pa

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Sustainable Design

Energy

• ​We used the PassivHaus planning package through the design stages to tweak the form, openings and fabric of the building to achieve  an annual heat demand of 20Kwh/m2a
• Through detailed design and quality checks during construction, we achieved an Airtightness rating of 1.5 ach @50pa. Contributing to the buildings extremely low annual heat demand. 

Systems

• A Centralised Mechanical Ventilation with Heat Recovery System (MVHR) is used to achieve great, consistent air quality, and high levels of air tightness.
• Heating and Hot water are provided via a Ground Source Heat Pump.

Materials

• The external wall structure is constructed from Porotherm Blockwork, a lightweight clay block with significantly lower embodied energy than standard concrete blockwork. 
• The bricks are locally made by York Handmade Bricks, with Yorkshire Clay, significantly reducing the transport energy. 
• Lime mortar is used throughout to ensure durability but also re-use of the brickwork at the end of the buildings life. 
• The only steel in the building is in reinforcement of the concrete foundations and window lintels. 
• Insulation products are EPS, Earthwool and Wood Fibre. 

Technical Design

Coal Mining Risk

• The site is within a coal mining risk area, Intrusive drilling was carried out to establish the ground conditions and enable the accurate design of foundations. 

Cavity Construction

• A highly insulated cavity construction is used, ranging from a 150mm to a 400mm insulated cavity.
• Basalt wall ties are used to reduce heat transfer through the external wall structure. 

Staircase

• The curved staircase is an important central feature in the design. To arrange spaces around, to link spaces with views and light. This was carefully formed from block-work, and treads were hung independently from the structure in a simple but bespoke design to achieve the required quality. 

Brick Detailing

• ​The brick selected was a non standard size of 2 x 10 inches. This longer format both helps the building settle in the landscape, and reflects a more historic use of brick. This non standard size, required careful coordination and detailing to ensure a quality aesthetic. We utilised different details to accentuate corners, frame openings and provide feature panels. 

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