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Project Overview

The Glamis Estate was built in the 1970s, without insulation to the walls, roofs or floors. This was typical for the era but means that heat is lost very quickly through all parts of the blocks. The communal heating and hot water system has only limited controls in the boiler rooms and each dwelling. The water for heating, taps and showers is pumped round the system constantly, even when relatively little is being used. Heat is lost through the pipes as the water circulates around the estate.

 

The estate is not energy efficient, and big improvements are needed to bring energy usage of the estate down to a much lower level. The reduction in energy usage combined with changes to how heating and hot water are generated will result in significant reductions in carbon emissions. The upgrades and energy efficiency work will give all residents greater control over the heating of your flat or house, and put you in control of your heating and hot water bills.

 

Glamis Estate currently has a communal heating and hot water system (sometimes known as ‘district heating’), which means that hot water is generated in centralised boilers, and piped throughout the estate to each dwelling to supply radiators, taps and showers. Parts of the system date from the 1970s and are no longer energy efficient or cost effective. The system is also prone to leaks and breakdowns.

 

Retrofit Objectives

The proposals described here are for a phased system replacement over the next 2 years. The benefits of doing this are:

  • Reduce the risk of leaks and breakdowns.
  • Improve energy efficiency overall.
  • Reduce heating bills for households.
  • Reduce the estate’s overall carbon emissions.

 

 

 

Retrofit Measures

Phase 1-

Heating, hot water upgrades

  • Install new communal heating and hot water pipework from the two boiler rooms.
  • Older gas boilers in the boiler room will be replaced with more efficient gas boilers.
  • Replace pumps, sensors and controls on primary heating and hot water equipment in the two boiler rooms to improve the energy efficiency.
  • Elf Row flats: To improve energy efficiency, a stand-alone heating and hot water system will be installed in the underground garages, including a set of Air Source Heat Pumps, and well insulated new pipework

 

Thermal insulation upgrades

  • Insulate below the concrete ground floor of the Cable Street flats
  • Insulate the lofts of the upper floor flats

 

Phase 2-

Heating, hot water and ventilation steps

  • Each dwelling will be connected to the new heating and hot water pipework.
  • Upgrade the hot water cylinders, pipework and radiators in tenanted flats and houses.
  • Install thermostatic control valves, programmers and heat meters in each tenanted and leasehold property.
  • Ensure the existing ventilation systems are working correctly.

 

Future Planned Works

  • Install Air Source Heat Pumps
  • Potential for photovoltaic panels
  • Loft insulation
  • Replace older windows and doors with more thermally efficient, high performance windows and doors.
  • Upgrade cavity wall insulation, or install new cavity wall insulation where there is none.

 

Funding

  • Heat Network Efficiency Scheme - £917k secure for the project via Keegans application on our Clients behalf.

 

 

Keegans Cost Consultancy Involvement

Keegans’ Cost Consultancy team played a pivotal role in the project by conducting Improvement Option Evaluations (IOE). Keegans also advised on the procurement pathway to market to secure the most advantageous commercial offer. During this process, we advised our Clients on the following aspects of the procurement challenges.

 

  • Procurement Objectives.
  • Procurement Routes.
    • Traditional – Lump Sum.
    • Traditional – Re-measurement.
    • Design & Build.
    • Construction Management.
    • Management Contracting.
    • Partnering.
  • Tendering Method.
    • Single Stage Tendering.
    • Two Stage Tendering.
    • Negotiated Tender.
  • Form of Contract.

 

Evaluation Process

Keegans’ approach to the IOE involved several key steps:

  • Baseline Assessment: Evaluating the current condition of each property to understand existing performance levels and identify areas needing improvement.
  • Identification of Improvement Options: Exploring a range of retrofit measures, including Heating Systems: Comparing high-efficiency boilers, heat pumps, and district heating systems.
  • Renewable Energy Sources: Assessing the viability of solar panels, wind turbines, and other renewable technologies.
  • Water Efficiency Measures: Investigating low-flow fixtures and greywater recycling systems.
  • Lighting: Considering energy-efficient lighting solutions such as LED systems.
  • Building Fabric Improvements: Enhancing insulation, windows, doors, and other elements of the building envelope.
  • Technical Feasibility: Analysing the technical aspects of each retrofit measure to ensure they can be practically implemented.
  • Cost-Benefit Analysis: Evaluating the economic viability of each option, weighing the costs against the expected benefits.
  • Environmental Impact: Assessing the environmental implications of each measure to promote sustainability.
  • Risk Assessment: Identifying and mitigating potential risks associated with each retrofit option.
  • Stakeholder Consultation: Engaging with residents, local authorities, and other stakeholders to gather input and ensure the chosen solutions meet their needs and expectations.
  • Prioritization and Selection: Ranking the retrofit measures based on the above criteria to select the most effective solutions.
  • Implementation Plan: Developing a detailed plan for the execution of the selected retrofit measures.

 

Keegans’ systematic and structured approach to Improvement Option Evaluation ensured that the Eastend Homes Decarbonisation project is efficient regarding Time, Cost and Quality. By carefully assessing the technical, financial, and environmental aspects of each option, Keegans and the stakeholders can make informed decisions that maximize the benefits of the retrofit project. This comprehensive evaluation process worked seamlessly alongside the Client’s Planned Maintenance programme to ensure no short-term decisions were taken and that the Client’s budget achieved the Client’s maximum objective.

 

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