Handforth Dean Apartments – Hunter’s Gate by Bramhall Construction

Wienerberger Porotherm Hunters Gate Case Study

The Porotherm construction system has been used to help a new housing development reach Code for Sustainable Homes Level 4.

Project: Housing Association Apartments
Contractor: Bramall Construction
Customer: Peaks and Plains Housing
Building size: 27,000 sq ft
Project length: 70 weeks

Porotherm Block: PT100
Wall spec: Porotherm PT100, 100m Xtratherm, 100mm facing brick
Wall thickness: 300mm
Thermal performance: 0.18W/m2K.

“We selected materials and systems which would allow us to achieve a higher Code level while also meeting the time and cost considerations of the construction programme. Porotherm was chosen over alternative masonry construction or timber frame as it offered both speed and thermal performance, and delivered in both areas over the duration of the project.” Steve Parrington, Area Director Bramall Construction.

Location site photos from the Handforth Dean building site.The Porotherm construction system has been used to help a new housing development reach Code for Sustainable Homes Level 4. The £3.7m Hunters Gate scheme from Peaks and Plains Housing provides 36 two-bedroom apartments at affordable rents for people in Handforth, Cheshire. The Government’s Homes and Communities Agency provided £1.8m of funding and the scheme was officially opened by the Chancellor of the Exchequer and local MP George Osborne.

The project, built by Bramall Construction North West, comprises two three-storey blocks, housing 12 and 24 apartments respectively. A combination of sustainable building materials and mechanical systems was employed to hit the Code Level 4 target, including the use of Porotherm for structural and cavity walls, Xtratherm insulation and an air source heat pump system which provides heating and hot water to all the flats.

The construction team specified Porotherm for both its laying speed and to maximise the points available under the materials section of the Code. Used in conjunction with 100mm insulation and Wienerberger’s Terca Woodland Mixture facing brick, the walls achieve a U-value of 0.18W/m2K. It is anticipated the thermal efficiency of the walls will help reduce heating costs for residents in the apartments over the longer term.

Chief Executive of Peaks and Plains, Tim Pinder, said Hunters Gate demonstrates the association’s commitment to sustainable development: “We are incredibly proud of Hunters Gate. This is an area of significant local housing need, and we have already allocated all of the apartments to local people.”

The Porotherm system is a virtually dry, efficient, strong, safe and environmentally-friendly method of construction which offers commercial benefits through increased labour productivity and shorter project programmes.

“We selected materials and systems which would allow us to achieve a higher Code level while also meeting the time and cost considerations of the construction programme. Porotherm was chosen over alternative masonry construction or timber frame as it offered both speed and thermal performance, and delivered in both areas over the duration of the project.” Steve Parrington, Area Director – Bramall Construction.

Environmentally, it offers excellent thermal performance due to precision-engineered air pockets, and is greener in manufacture as the innovative design uses less clay, is fired at lower temperatures and each block contains contains up to 30% waste materials. Off cuts can be recycled, as can the blocks at the end of their life span, helping to reduce on site waste.

Validated by CERAM, Porotherm’s performance credentials meet levels required by the UK’s Codes of Practice and Building Regulations and has a Class A fire rating. The block is up to 50% lighter than other similar products of the same size due to perforations and smooth-edged design, also adding to safety standards on site.

“As innovators in community regeneration and housing, we have been able to use our knowledge and the latest in green build technology to improve the efficiency of these homes and help to minimise their environmental impact.” Steve Parrington, Area Director – Bramall Construction.

 

DOWNLOAD THE CASE STUDY HERE:
Wienerberger Porotherm Hunters Gate Case Study