(tonnes per 100m2 of build)
From the design of our homes and developments, to the materials we purchase, the way we build and the information we give our customers on the use of their homes - we care about reducing our impact on the environment. We operate a system that ensures we manage these impacts in a systematic way and is certified by the British Standards Institute to the international standard ISO 14001:2015. All of our developments are subject to internal spot-checks on a regular basis, using a risk-based approach. Site visits and spot checks are undertaken by inspectors from the Health, Safety and Environment Department. Directors also undertake spot-checks and the outcomes of these assist with continuous improvement.
We are partners in the Supply Chain Sustainability School, which is an award-winning initiative providing free learning and development to help our supply chain partners address sustainability issues. The School offers free practical support to all Redrow suppliers and subcontractors in the form of e-learning modules, training workshops and self-assessments. Since we became partners with the school, over 4,700 free resources have been accessed by more than 300 Redrow suppliers. We encourage our supply chain to improve their knowledge and understanding of sustainability issues through the School's programmes and also sit on the Homes Leadership Group and Carbon and Waste Special Interest Groups, supporting the development of the School.
Our group-wide design standards apply to all our homes and go beyond regulations and material sustainability standards in many instances. For example to minimise sound impacts we use of robust Standard Details which exceed Building Regulaton requirements by 3 dB. All windows are 1.2U-Value and all doors are 1.0 U-value. All floors are 0.12max U-value. All roofs are 0.11 U-value: all improvements upon standard requirements. Our homes are designed for improved daylighting and solar gains by adding larger than standard patio doors and windows.
We are working with The Wildlife Trusts to develop and implement a pioneering new approach to enhancing biodiversity on our developments. We are developing a net gain approach to biodiversity; ensuring nature is enhanced as a result of our activities and people can access and enjoy nature in their daily lives. We incorporate Sustainable Urban Drainage schemes on all of our developments to manage flood risk, which also often provide habitats for wildlife.
Redrow standard specification includes low embodied carbon products such as use of innovative interlocking concrete tiles, aircrete concrete blocks with up to 80% of the raw materials used in the manufacture being recycled products, locally recycled aggregates.
(tonnes per 100m2 of build)
(tonnes of CO2e per 100m2 of build)
(m3 per 100m2 of build)
The percentage of homes and apartments that have been connected to on-site renewables or low carbon community energy was 32% in 2020. We are installing innovative community energy infrastructure on sites like Saxon Brook in Devon and Colindale, London. Once completed, the community energy project at Saxon Brook alone will be saving 4,173 tonnes of tonnes of CO2 per year, which is 64% less than an equivalent development with traditional individual home energy systems required for a traditional development of that size.
We have been disclosing our carbon emissions and reduction activities to the Carbon Disclosure Project (CDP) annually since 2010. In the most recent submission, which can be viewed here, we were awarded a B grade which reflects the progress we have made by measuring awareness, management and actions taken on climate change. In addition to reporting and disclosing our environmental and sustainability performance throughout our annual report, this year we have also included specific climate-related disclosures following the Task Force on Climate-related Financial Disclosures’ (TCFD) recommendations. These disclosures are structured around the TCFD’s key four thematic areas and can be viewed here. We are currently focusing on reducing diesel use from our site activities and rolling out 'eco-cabins' for our on-site office and welfare facilities. Our inventory of greenhouse gases has been verified by SGS to a limited level of assurance, in accordance with ISO 14064-3:2006 as meeting the requirements of the Greenhouse Gas Protocol - A Corporate Accounting and Reporting Standard. For more information on our greenhouse gas reporting accounting methodology and to view our Greenhouse Gas verification statement, click here.
Redrow standard specification includes the following products
• Roofing tiles: use of innovative interlocking concrete tiles that require 45 Kg of raw materials per square meter in the manufacturing process, while plain tiles require 75kg of raw materials per square meter. This reduces the CO2 emissions during manufacture by 40% compared to concrete plain tiles.
• Concrete roof tiles in place of clay tiles: the embodied energy of clay tiles is 270 – 430 MJ/m2 while for concrete it is 40 – 90 MJ/m2.
• Aircrete concrete blocks: up to 80% of the raw materials used in the manufacture of the blocks are recycled products in some form, with the primary ingredient being Pulverised Fuel Ash (PFA) which is a by-product of coal fired power stations that would otherwise be sent to landfill. 99% of all raw materials are sourced from UK suppliers, reducing the need for transportation, and the manufacturing sites are strategically placed geographically close to raw material suppliers and convenient for quick and effective deliveries to all parts of the country.
• Gypsum plasterboard: produced by using either natural gypsum, synthetic gypsum (from desulphurising the flue gas of coal-fired power plants) or recovered gypsum from the waste-recycling chain. Extracting natural gypsum does not require much energy and mines in use are continuously restored in order to preserve the natural site and its biodiversity. Almost 100% of the paper used to manufacture plasterboards is recycled paper.
• Locally recycled aggregates
We have been working tirelessly for more than fifteen years to promote responsible forest management and ensure the eradication of illegal timber products from our supply chain. Our diligence has paid off and we are proud that currently 99.9% of our timber is responsibly sourced and credibly certified. We won’t stop there though, we’re determined to achieve our target of 100%. We were the first UK homebuilder to achieve the WWF's ‘Three Trees’ status in 2015, in recognition of the progress we had made in this area. The retention of our ‘Three Trees’ status in 2019 for the third assessment period places Redrow among the top 40 companies in the country using Forest Stewardship Council (FSC) certified and other responsibly sourced timber and paper products. We have been participants in WWF's Global Forest & Trade Network (GFTN) from 2003 until its closure by WWF in October 2018. Despite the closure of the network we continue to uphold the standards set and report timber accordingly. You can read our current reporting summary below. Note: this annual summary is released in March each year for the previous year’s data. You can view our Timber Purchasing Policy here.
We currently recycle over 97% of our waste across the business. At Colindale Gardens, London, 16 unused buildings were demolished to make way for new homes to be built. All the materials from the demolition process were separated with c.5,000 tonnes of metal recycled and 61,000 cubic metres of concrete crushed and reused on site as aggregates.
Our homes have one of the lowest water use standards in the industry at 105 litres-per-person-per-day (lpppd), compared with a building regulation standard of 125 lpppd. This is an issue of increasing importance; a recent report from the Public Accounts Committee shows that England is likely to face significant water shortages within the next two decades as the population grows, urbanisation continues and the climate warms. We also incorporate Sustainable Urban Drainage schemes on the majority of our developments to improve rainwater management and reduce flood risk. At our Heathlands development in North Wales, we have been commended for effective water management, including rainwater harvesting which safely and cleanly diverts rainwater from the rooftops of the new homes and feeds it into the adjacent nature reserve, and having extensive long-term management plans in place.