Kelcroft E&M Limited John Herbert
unit A10 Kowloon Bay Hong Kong
+852 2335 9830
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Green Building BEAM consultant

REA, John Herbert, Registered Energy Assessor, rea, Hong Kong
John Herbert
BEAM Professional

by John Herbert

Kelcroft is green building consultant based in Hong Kong. It easy to imagine the perfect green building, actually building it can be a lot more difficult. Every decision has an impact on the wallet and the world around you. That's why making wise choices is important from day one.

Want to discuss buildings or green building? call John Herbert 2335 9830 today!

How create a plan for building green:


Envelope - Wall/Glass
Envelope - Roof
Envelope - Airtightness
Envelope - Materials
Embodied Energy
Energy Modelling
Lighting Simulation
Light Pollution
New Buildings
Existing Buildings
Data Center

green building consultant


We all need and use shortcuts everyday, the household goods we buy, or tinned goods we pick up every time we shop, we use labels as shortcuts.

We might use the excuse of limited time, who has time to read every product label? Or perhaps lack the expertise to investigate every possible detail? We learn to trust certain labels as an everyday shortcut, so we can get on with our daily life.

BEAM PLUS is a green building label, it is independent credential, for developers it is especially useful marketing tool to attract and retain high value buyers and tenants.

Often international companies will only sign a lease in a green building, increasing the demand for a green building label.

The Green Building sector has developed over the last twenty years, often including BEAM as a specification requirement.

We also know that around two thirds (66%) of people would rather deal with a environmentally sympathetic organisations, driving customer demand for high quality green buildings, the label helps the consumer, avoiding the tedious examination, the label is a shortcut that demonstrates it is a green building.

Our role is to meet those needs of your customers, need to chat about green building? call John Herbert 2335 9830 today!


green building


Building sustainable has to be carefully considered, commercial and residential buildings are in focus because the energy consumption both in construction, and more particularly operation is directly linked with the production of greenhouse gases and carbon.

green building Strategy

Strategy is formulated by exclusion, draw a circle, everything outside the circle will be ignored, to make your map. For example, for a commercial building, credits related to residential would be excluded. This will focus attention on the key issue. The strategy can be created and review through the design charrette.

Kelcroft helps improve your environmental score card, using tried and test techniques, call us today telephone +(852) 2335 9830


green building


The strategy is the overview that allows you work out the project limits, to focus attention on the issues and innovations for the development. This avoids wasting time examining the wrong issues, that opens the door to start planning the project.

Planning a green building project is complex, and challenging issue. And planning needs to start before the architect issues their vision, because rolling back the scheme becomes an uphill battle.

Planning needs to consider the future, we already know that Hong Kong is a largely a service economy, as a result buildings consume about ninety percent (90%) of all electricity generated, that equates to sixty five percent (65%) of the Hong Kong's GHG emissions, so the data puts a bullseye on buildings. Because today's new building will be tomorrow's existing building, planning has to recognize the buildings will be targetted.

Having a BEAM Professional on the design team earns one credit point under the BEAM assessment system.

Want to discuss green building? call John Herbert +852 2335 9830 today!


green building

Building Envelope

Understand that once the building envelope is "approved" it is difficult to rollback, and that effectively bakes in the energy costs for the next 60 years!

It is a critical step because it simultaneously determines the embodied energy, the energy used constructing the building, and controls the options for recycling the envelope materials at the end of service life.

Forget about the framework of the rating tool and scorecards, first examine every element of the building envelope, as a whole package, including the major elements for the wall, window/glass, and roof.

Remember that looking forward buildings will be the no. 1 target, therefore optimising the building envelope is a critical future-proofing move.

carefully examine the options for walls and glass

Want to discuss green building? call John Herbert +852 2335 9830 today!


green building

Envelope - Wall and Glass

For air conditioned buildings the lowest possible WWR is best period. the lowest WWR means lower air leakage, lower heat gain, and lower construction cost. increasing the area of glass increases the heat gain, optimizing the WWR impacts the energy cost on day one and for the next 60 years!

Optimise the type of glass selected, better glazing lowers the demand (heating / cooling load) , the HVACR equipment capacity is reduced, and therefore the operating costs are reduced for the service life of the building!

Want to discuss green building? call John Herbert +852 2335 9830 today!


green building

Envelope - Roof

The roof is often overlooked part of the building envelope. Consider the floor area to roof area ratio, if the building has 1:1 ratio that increases the roof heat gain/heat losses, so design to exceed the minimum OTTV requirement.

For air conditioned space a reflective white roof is a "green" solution. It is far more effective, reducing solar heat gain, lowering air conditioning running costs than a green lawn reflective white roof calculation

It is best value, in terms of ROI, choose a reflective white finish adds no extra cost to the project, and will save energy for decades.

reflective white roof lowers energy costs

Above: Cool Reflective Roof

Whilst considering the roof, the materials must be carefully considered at the same time. The roof construction impacts the embodied energy used in the construction and how the materials can be recycled during decommissioning. And that means considering all the factors, including demolition at the design stage.

Only after the building envelope has been refined and optimized, then packages for BEAM submission, for example SA8, detailing the roof can be generated. In your notes for the contractor, provide reminder to obtain laboratory report for the roofing materials purchased.

Want to discuss energy saving reflective roofing? call John Herbert +852 2335 9830 today!


green building

Envelope - Airtightness

A leaky building will waste energy for 60 years if it is not fixed, that is a high price to pay. For air conditioned buildings summertime condensation and mould problems are commonplace.

There is no standard for air leakage in Hong Kong, optimise building envelope air leakage by measuring the air tightness, otherwise it will impact the energy costs for the next 60 years.

Need to chat about building envelope airtightness or air tightness standards, call John Herbert +852 2335 9830 today!


green building


As discussed in the building envelope topic, the use of materials is a complex and important issue, these three key issues need to be planned simultaneously:

- Embodied Energy/Embodied Carbon
The embodied energy/carbon of the material used in the construction and construction waste generated;

- Durability
Materials require maintenance, and materials that become unserviceable may require replacement or frequent replacement, during the life of the building;

- Decommissioning (DX)
Once the building material has reached the end of its service life list the means and methods for recycling or reuse;

Overall, it is quicker to start at the end, consider Decommissioning (DX) first.


The whole concept of 'waste' needs urgent reform, when money is the only metric, companies are required to make financial decisions based on cost alone, but there are alternatives for industry:

  • Gypsum a byproduct from power station scrubbers is the raw material for a gypsum dry wall factory, or feedstock for organic farming;
  • Heat energy, a byproduct of power generation is typically dumped in to the sea, or waste heat from manufacturing process is instead used to power district cooling, district heating systems, or hot water systems
  • A byproduct from the coal mining industry is instead used as the raw material to manufacture ceramic tiles;
  • Ceramic tile maker from Spain, has floor tile system that does not require grout, so at the end of life, the tiles can be removed without jack hammer, and can be even reused elsewhere;
  • Housing estate (the whole estate) municipal solid waste (MSW) is the free fuel for a local waste to energy facility to power lighting;
  • Glass bottles are used to replace sand for manufacturing eco-blocks paving blocks;

  • Presently there are too many material experts creating "new" materials without any possible route for future use. As a solution to excess plastic, materials are being created with plastics mixed, and forever bonded with concrete, at the end of its life, it cant be recycled, it is kicking the can down the road, take the long tern view, avoid those materials.

    There are many possibilities, demanding more design, not less, to ensure the building materials have low embodied energy and can be easily recycled in the future.


    green building

    Embodied Energy

    Embodied energy and embodied carbon are two sides of the same coin, because embodied carbon is directly proportional to embodied energy.

    I will use Embodied Energy (EE) it represents the energy spent during mining, processing, production, and transport of materials to the job site. It is significant quantity, World GBC report EE accounts for around 11% of the total carbon emissions (embodied and operational). It also highlights the importance of the construction process, materials damaged on site have to be replaced, causing double the amount of embodied energy.

    Materials that require frequent replacement during the life cycle of the building, for example timber door sets, need more careful consideration. Some components wear and need to be replaced during operations, increasing the embodied energy and total energy used in the building.

    Smart designers realize that optimizing construction materials has early benefits. read about managing embodied energy.

    To discuss embodied energy choices, call John Herbert +852 2335 9830 today!


    green building

    Energy Modelling

    Energy modelling is a simulation tool to estimate the annual energy use of a building, and one of the most important factors is the composition of the building envelope, that sets the demand load.

    Buildings with more glass, have high WWR, and will use more energy than a building with a smaller area of glass, because glass has higher energy transmission rate than walls. Also glass is a primary source of poor sealing and air leakage, so can decrease the airtightness of the building, further increasing the annual energy use.

    In addition to the building envelope, the type of Building Services installation is also important, the efficiency of the conversion of electricity into heating/cooling/fan power will impact the building energy use for each operating hour.

    To ensure the owner can monitor energy use, it is important to provide energy meters to record the energy used for different systems and components.

    To discuss energy modelling, call John Herbert +852 2335 9830 today!


    green building

    Lighting Simulation

    Helping ensure that the lighting installation quality and energy use is optimum on paper at the design stage, before construction commences, relies on modelling the performance of the lighting and lighting fittings.

    Above: Office Lighting Simulation

    Above: Simulation visualisation interior lighting

    We have helped architects, designers, engineers, developers, and building owners plan and develop higher performance low energy demand buildings in a sustainable way, that is what we do.

    Want to discuss lighting, call John Herbert +852 2335 9830 today!


    green building

    Lighting Pollution

    Examine lighting pollution from the building facade and or landscape lighting to minimise the environmental impact at design stage by simulation and modelling the performance of the lighting and lighting fittings.

    Learn more about lighting pollution here

    Above: External facade lighting simulation

    Above: Facade Lighting Visualisation

    Above: Mid Floor lighting Simulation result

    To discuss facade lighting issues for BEAM PLUS SA15, call John Herbert +852 2335 9830 today!


    green building

    BEAM PLUS New Building (NB) Projects

    New Buildings represent a tiny fraction of the current building stock, but will be tomorrow's existing buildings. The best approach for new buildings is to examine the influencing factors, environment impacts, and the outcomes, including:

    1) Strategy
    - create strategy through exclusion, disregard irrelevant / impossible issues, target influencing factors;

    2) Plan
    - Follow the strategy creating your tactics to achieve the objectives. Remember that a minor change may have big impacts, changing the WWR for one elevation may impact a string of interconnected issues:

    - quantity of wall and glass materials;
    - embodied energy of the materials used, and perhaps construction waste;
    - building envelope;
    - indoor Air Quality;
    - cooling load impacting the air conditioning plant
    - lighting;
    - overall annual energy use;
    - decommissioning quantities of materials assigned to be recycling/reuse;

    3) Envelope
    - optimise the building envelope, refine the WWR and glazing to minimize operating costs and energy consumption. then review embodied energy and target reductions BEFORE the plans are approved, ensure that the package as designed will be resilient;

    4) Indoor Air Quality
    - before MEP design starts, examine and optimise the factors that influence good air quality in the building, sufficient openable windows? and good mechanical ventilation where needed;
    - comfort, including noise must be considered both indoor and externally;

    5) Energy Use
    - optimise all factors that influence the air conditioning running costs, review and refine the envelope, wall, glass, and lighting;

    6) Water Use
    - optimise the plumbing design to reduce water use, encouraging conservation, consider using rainwater for cleansing water purposes. And drainage system design (remember SARS).

    7) Impacts
    - Examine the whole package and optimise to reduce environmental impacts, examine the wider environment, provision of landscaping, parks and play areas around the development;

    8) Decommissioning (DX)
    - At the design stage examine the processes involved to Decommissioning (DX) the building, optimising the chance for separation for recycling or reuse of materials when the building has reached the end of its service life, design from the offset with system building that can be dismantled.

    This is not a single step process, it may require several iterations to refine the countless influencing factors for creating a green building design, then allocate the features into the BEAM PLUS credit framework;

    Want to discuss a new green building call John Herbert 2335 9830 today!


    green building

    Existing Building (EB) Projects

    Existing buildings are already operating and should have a track record to examine, the best approach for an existing buildings is to examine the influencing factors, its impact, and the outcomes, including:

    1) Energy Use
    - compared with existing utility bills, define plan to minimise energy consumption;
    - conduct energy audit;
    - optimise the key factors that are influencing the existing air conditioning running costs, including behaviour, operations, controls, maintenance, glazing, and lighting;

    2) IAQ
    - optimise the factors that influence good quality IAQ in the building, sufficient operable windows, and good mechanical ventilation where needed;

    3) Environmental Impacts
    - examine the environment impacts, including noise and other impacts;

    Want to discuss existing buildings call John Herbert 2335 9830 today!


    green building

    The Greener Office

    Green building rating tools have developed from certifying whole buildings down to fitting-out and renovation projects for corporate and individual offices.

    BEAM PLUS Interiors (BI) is a rating tool for designing healthy office accommodation. Customers are tired of greenwashing, diesel buses are green? A BEAM certificate demonstrates your environmental credentials to your staff and stakeholders.

    A BEAM PLUS Interiors (BI) certificate provides real evidence for your customers learn more about Kelcroft's consulting service.

    Creativity is an important asset, determining better solutions within constraint is a necessary skill.

    Want to discuss a greener office? call John Herbert 2335 9830 today!


    green building

    Industrial and Manufacturing Greening

    Industrial and manufacturing sector face the same challenges today.

    Government's have a stricter attitude demanding stronger environmental compliance, requiring lower carbon emissions, lower water consumption, and reduced waste.

    Factories need to be more sustainable from day one, using materials sourced from renewable sources, or waste reused as the raw material for the next process.

    Energy usage and sustainability are two sides of the same coin.

    Ms. Gro Harlem Brundtland stated at MIECF that 'Energy' is the most critical part of sustainability, and Kelcroft conducts EMSD energy audits and REA energy efficiency assessments.

    Kelcroft is qualified Cleaner Production consultant that means improving your business environmental score card, using tried and test techniques.

    To discuss greening industry call John Herbert 2335 9830 today!


    green building

    Leisure/Sports Centre

    Green building provides high quality, more durable, efficient, environmentally sensible buildings. Building green helps reduce excess and waste, creating a sustainable, more efficient, high performance building. It could also keep your business viable, as old inefficient plants are forced to close.

    green building consultant

    To chat about greener sport centers call our BEAM professional John Herbert 2335 9830 today!


    green building

    Data Centers

    Green building provides high quality, more durable, efficient, environmentally sensible buildings. Building green helps reduce excess and waste, creating a sustainable, more efficient, high performance building. It could also keep your business viable, as old inefficient plants are forced to close.

    green building consultant, data centre

    Want to discuss a greener data centers? call John Herbert 2335 9830 today!


    green building


    Green Building benefits include lower operating costs, with reduced environmental impact, and marketing a credible certificate shows your customers your operating a green and environmental smart business.

    Green building benefits include:

  • Enhance and protect ecosystems and biodiversity
  • Improve air and water quality
  • Reduce solid waste
  • Conserve natural resources
  • Reduce operating costs
  • Enhance asset value and profits
  • Improve employee productivity and satisfaction
  • Optimize life-cycle economic performance
  • Improve air, thermal, and acoustic environments
  • Enhance occupant comfort and health
  • Minimize strain on local infrastructure
  • Contribute to overall quality of life

  • Want to discuss sustainable green building, call the expert John Herbert on 2335 9830 today!


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    tags: green building, process, planning, consultant, BEAM consultant, BEAM PLUS consultant, BEAM professional, HK-BEAM consultant, Hong Kong