At interface we keenly exploit opportunities and embrace new technologies. We also understand risk and work with our clients to mitigate them.

we start by understanding

Understanding what can be achieved allows us to give focused guidance during the early design stage, while our knowledge of manufacture and the limitations of site working make our involvement critical for a successful result.

Understanding our client’s priorities is essential in developing a successful project. We develop bespoke scopes for every project to enable us to deliver the specific requirements of our developer, architects and main contractor clients.

 

our accreditations

and our commitment to research and development defines our culture.

Our engineers and designers belong to the Society of Facade Engineering, a forum for the appreciation for façade engineering and the surrounding technical issues.

Our ISO 9001:2008 certified Quality Management System ensures we deliver a quality service to our clients through our established processes and procedures.

We are consultant members of the Centre for Window and Cladding Technology and are actively involved in façade engineering as a discipline.

Our ISO 14001 accreditation shows we care about our impact on the environment and are committed to minimising our environmental footprint.

who we work with

  • AHMM
  • Allies and Morrison
  • Almacanter
  • Anthology
  • Apt Architects
  • Arcadis
  • Brookfield Office Properties
  • Campbell Architects
  • Canary Wharf Group
  • Corstophine and Wright
  • Crosstree
  • David Walker Architects
  • Delvendahl Martin Architects
  • EPR Architects
  • Flanagan Lawrence Architects
  • Fletcher Priest Architects
  • Formation Architects
  • Foster and Partners
  • Gardiner and Theobald
  • Gleeds
  • Graham Construction
  • Grid Architects
  • Holmes Miller Architects

 

  • HUB Group
  • John McAslan and Partners
  • John Robertson Architects
  • Karakusevic Carson Architects
  • Kier Construction
  • Land Securities
  • LOM Architects
  • London Continental Railways
  • Mace
  • Mica Architects
  • Multiplex
  • NBBJ
  • Powell Dobson Architects
  • Quintain
  • Romulus Construction
  • Sheppard Robson Architects
  • SimpsonHaugh and Partners
  • Sir Robert McAlpine
  • Skanska
  • St James, Berkeley Group
  • TPS
  • Whittam Cox Architects

our people

Working in a technical and skilled discipline, we demand the best from our team and value them highly. All of our facade engineers are members of professional organisations and are actively involved in the development of façade engineering as a professional discipline.

 

All employees have a personal development plan linked into our programme of quarterly reviews, where targets are set and training needs determined. Our six monthly company development reviews analyse the skills and expertise within the company and set our technical strategy to allow us to better deliver our clients’ requirements and prepare for the technical demands of the future.

Will Stevens
Director

Alessandro Pacioselli Facade Structural Engineer

Benedetta Tombolesi
Facade Engineer

David Portman
Director

Weronika Sawicka
Senior Facade Engineer

Chierol Lai
Facade Engineer

Carolyn Ansted
Director


Tasos Poulokefalos
Facade engineer

June Brown
Admin Assistant

Will Stevens, Director

Will is a founder member of interface façade engineering, set up to deliver dedicated façade engineering to his strong UK and international client base. In a highly technical field, Will has been fortunate to be involved in projects that have allowed him to continually develop his skills and knowledge. He relishes the challenge of working with the best architects, engineers, manufacturers and contractors to find practical and lasting solutions.

A skilled collaborator, Will brings engineering knowledge and technical understanding to the development of the concepts and the delivery of facades.

His work is exemplified by the integration of different – often conflicting – requirements within a single object. Energy, structure and design aspects must all be digested to achieve a truly integrated approach ‘such that all aspects are satisfied to a degree not achievable by any direct approach. This is the way to make things happen.’

Will’s international work has given him both hot and cold climate experience and an excellent understanding of the technical challenges that extreme climates demand. Expanding façade engineering into new markets in the UAE, Italy, Denmark and northern Norway, he has helped many clients to understand the value that facade engineering brings to projects.

David Portman, Director

David joined interface as a director bringing his experience of company leadership and extensive knowledge of facades and architecture to our growing team. David has been involved in the concept design through to tender and construction of multiple award winning projects throughout his career, and brings this expertise of realising and delivering architectural intent to our projects.

David’s interest in facade engineering allowed him to lead the development of the facade solutions on a broad range of projects from university research laboratories to bank head offices in the City of London. His experience includes systems and material selection, detailing and construction technique, contractor selection and extensive contractor design development due to his desire to see projects built.

With David’s architectural background, we benefit from his approach to design challenges with an impulse to satisfy all requirements. This, alongside his notable experience of managing the business growth of highly acclaimed practices, is a great asset to the planned development of interface as a dedicated facade engineering consultancy.

Carolyn Ansted, Director

Carolyn joined interface in 2012 as an experienced practice manager and as Operations Director, she has an integral role within our company. Carolyn manages our practice, projects and our financial systems, both day to day and strategically.

Carolyn manages the development of our business plan and the implementation of the objectives giving focus and direction to our progress. With her understanding our our scope of works, she also manages our tendering process tailoring our proposals to suit the project and client requirements.

Carolyn developed our quality management system which led us to gaining the ISO 9001:2008 accreditation in 2013. Carolyn also led us to gain our ISO 14001 accreditation in 2018 recognising our dedication to the environment and continuing our commitment to excellence. She is now responsible for the overall operations and maintenance of our QMS.

She has established our marketing material and brand. Managing the development of our website she is responsible for its expansion and advancement, as well as building upon all aspects of our marketing profile.

With her understanding of construction consultancy she has brought key knowledge, developing the methods and systems necessary for the smooth running of the business.

Alessandro Pacioselli, Facade Structural Engineer

Alessandro began working with Interface in 2015 as an experienced chartered structural and facade engineer. Alessandro has vast experience in the design, production and installation of curtain walling, with a particular expertise in glass, aluminium and steel.

Alessandro’s Masters degree in Civil Engineering led him to work for global curtain walling company Permasteelisa, involved in the design and testing of systems across Europe and the Middle East. Alessandro also has experience in engineering consultancy and worked as a senior facade engineer on signature projects including Pirelli HQ in Milan, Ramboll Head Quarters and King Abdullah Financial District.

At Interface Alessandro will assist in the design and delivery of our projects, as well as working through the contractor design stage of one of our exclusive projects in southwest London.

Weronika Sawicka, Senior Facade Engineer

Weronika is a Senior Facade Engineer at interface and adds her experience in high quality facade design.

Weronika has worked within the industry for over 14 years for specialist facade contractors across Europe on projects with varying complexity. Weronika’s experience has seen her designing suitable facade systems for the Secretary-General of the European Parliament (Luxembourg) and A2/A3 Wood Wharf and Southbank Place (London) among others. 

With her in-depth understanding of the facade design, manufacture and installation she has also applied her industry knowledge within facade consultancy developing facade solutions for a variety of systems and materials for unitised, stick and rain screen curtain waling for both new developments and refurbishments. Weronika’s excellent knowledge and experience within the facade industry will prove vital in her current role on a major part new/part refurbished hotel and commercial development in Piccadilly.

Tasos Poulokefalos, Facade Engineer

Tasos joined Interface as a Facade Engineer, bringing experience as a Structural Engineer into our Facade engineering team. Tasos has been involved in the development of a number of prominent projects, including the analysis of various projects in the Middle East, such as the KAFD (King Abdullah Financial District) metro station in Riyadh, Saudi Arabia.

Through his structural background, he offers a vigorous approach to design challenges and structural details to guarantee a successful end result. Tasos is currently working on our prestigious West End development, reviewing the cladding contractors drawings to ensure they meet the employer’s requirements. This role will continue throughout the building construction, where he will attend site to review the facade installation against the design.

Working at Interface has allowed Tasos to further develop his passion for facade engineering and further apply his range of technical skills that have proven valuable to us and our projects.

Benedetta Tombolesi, Facade Engineer

Benedetta joined interface as an experienced facade engineer, specialising in stone, terracotta, faience and masonry. Benedetta’s architectural engineering knowledge and background working within industry as a facade designer has allowed her to effectively apply her skills in both new developments and refurbishments. Benedetta’s skills include developing engineering solutions for projects of varying complexities and detailing systems with a broad palette of materials.

At interface, Benedetta is engineering the design of our significant retail development for a major London rail station, as well as our landmark development at the heart of Oxford Street.

Chierol Lai, Facade Engineer

Chierol joined interface as an engineering graduate, bringing with her enthusiasm and eagerness to learn she assists on a variety of our projects.

Chierol’s degree in design engineering provided her with a diverse knowledge ranging from material science, computer science and product design, allowing her to provide a technical and creative point of view for the design and development of our projects, including Lancelot Place and Waterloo Retail facade. She is proficient with a selection of creative and 3D modelling software, and is very passionate about fine arts. She is also brings additional languages to our team including Dutch, Mandarin and Cantonese, which will be useful in subcontractor discussions in particular.

With the assistance of interface, she has planned her development to expand her range and depth of knowledge of facade engineering with the goal of managing her own projects and to truly find her own niche within this multi-faceted discipline. She is planning to take a masters degree and to become a chartered facade engineer.

June Brown, Admin Assistant

June is the Administration Assistant here at interface and has an important role in assisting the team with the management of our office and finance systems on a day to day basis.

June brings vast experience from within the construction consultancy field to assist in the running of our finance, document control, administration and procedures within the business to help the company run as efficiently as possible.

June also has a role in maintaining our systems to meet the high quality that our ISO 9001 accreditation demands.

Will Stevens

Will Stevens

Director

More about Will

Will Stevens, Director

Will is a founder member of interface façade engineering, set up to deliver dedicated façade engineering to his strong UK and international client base. In a highly technical field, Will has been fortunate to be involved in projects that have allowed him to continually develop his skills and knowledge.

He relishes the challenge of working with the best architects, engineers, manufacturers and contractors to find practical and lasting solutions. A skilled collaborator, Will brings engineering knowledge and technical understanding to the development of the concepts and the delivery of facades.

His work is exemplified by the integration of different – often conflicting – requirements within a single object. Energy, structure and design aspects must all be digested to achieve a truly integrated approach ‘such that all aspects are satisfied to a degree not achievable by any direct approach. This is the way to make things happen.’

Will’s international work has given him both hot and cold climate experience and an excellent understanding of the technical challenges that extreme climates demand. Expanding façade engineering into new markets in the UAE, Italy, Denmark and northern Norway, he has helped many clients to understand the value that facade engineering brings to projects.

David Portman

David Portman

Director

More about David

David Portman, Director

David joined interface as a director bringing his experience of company leadership and extensive knowledge of facades and architecture to our growing team. David has been involved in the concept design through to tender and construction of multiple award winning projects throughout his career, and brings this expertise of realising and delivering architectural intent to our projects.

David’s interest in facade engineering allowed him to lead the development of the facade solutions on a broad range of projects from university research laboratories to bank head offices in the City of London. His experience includes systems and material selection, detailing and construction technique, contractor selection and extensive contractor design development due to his desire to see projects built.

With David’s architectural background, we benefit from his approach to design challenges with an impulse to satisfy all requirements. This, alongside his notable experience of managing the business growth of highly acclaimed practices, is a great asset to the planned development of interface as a dedicated facade engineering consultancy.

Carolyn Ansted

Carolyn Ansted

Director

More about Carolyn

Carolyn Ansted, Director

Carolyn joined interface in 2012 as an experienced practice manager and as Operations Director, she has an integral role within our company. Carolyn manages our practice and our financial systems, both day to day and strategically.

Since joining interface, Carolyn has developed our quality management system which led us to gaining the ISO 9001:2008 accreditation in 2013. She is now responsible for the overall operations and maintenance of our QMS. Carolyn also led us to gain our ISO 14001 accreditation in 2018 recognising our dedication to the environment and continuing our commitment to excellence.

Carolyn has established our marketing material and brand. Managing the development of our website she is responsible for its expansion and advancement, as well as building upon all aspects of our marketing profile. She manages the development of our business plan and the implementation of the objectives giving focus and direction to our progress.

With her understanding of construction consultancy administration she has brought key knowledge, helping us to develop the methods and systems necessary for the smooth running of a growing business.

Alessandro Pacioselli

Alessandro Pacioselli

Facade Structural Engineer

More about Alessandro

Alessandro Pacioselli, Facade Structural Engineer

Alessandro began working with Interface in 2015 as an experienced chartered structural and facade engineer. Alessandro has vast experience in the design, production and installation of curtain walling, with a particular expertise in glass, aluminium and steel.
 
Alessandro’s Masters degree in Civil Engineering led him to work for global curtain walling company Permasteelisa, involved in the design and testing of systems across Europe and the Middle East.
 
Alessandro also has experience in engineering consultancy and worked as a senior facade engineer on signature projects including Pirelli HQ in Milan, Ramboll Head Quarters and King Abdullah Financial District.
 
At Interface Alessandro will assist in the design and delivery of our projects, as well as working through the contractor design stage of one of our exclusive projects in southwest London.
Weronika Sawicka

Weronika Sawicka

Senior Facade Engineer

More about Weronika

Weronika Sawicka, Senior Facade Engineer

Weronika is a Senior Facade Engineer at interface and adds her experience in high quality facade design.

Weronika has worked within the industry for over 14 years for specialist facade contractors across Europe on projects with varying complexity. Weronika’s experience has seen her designing suitable facade systems for the Secretary-General of the European Parliament (Luxembourg) and A2/A3 Wood Wharf and Southbank Place (London) among others.

With her in-depth understanding of the facade design, manufacture and installation she has also applied her industry knowledge within facade consultancy developing facade solutions for a variety of systems and materials for unitised, stick and rain screen curtain waling for both new developments and refurbishments.

Weronika’s excellent knowledge and experience within the facade industry will prove vital in her current role on a major part new/part refurbished hotel and commercial development in Piccadilly.

Benedetta Tombolesi

Benedetta Tombolesi

Facade engineer

More about Benedetta

Benedetta Tombolesi, Facade Engineer

Benedetta joined interface as an experienced façade engineer, specialising in stone, terracotta, faience and masonry.

Benedetta’s architectural engineering knowledge and background working within industry as a façade designer has allowed her to effectively apply her skills in both new developments and refurbishments.

Benedetta’s skills include developing engineering solutions for projects of varying complexities and detailing systems with a broad palette of materials. At interface, Benedetta is engineering the design of our significant retail development for a major London rail station, as well as our landmark development at the heart of Oxford Street.

Tasos Poulokefalos

Tasos Poulokefalos

Facade Engineer

More about Tasos

Tasos Poulokefalos, Facade Engineer

Tasos joined Interface as a Facade Engineer, bringing experience as a Structural Engineer into our Facade engineering team. Tasos has been involved in the development of a number of prominent projects, including the analysis of various projects in the Middle East, such as the KAFD (King Abdullah Financial District) metro station in Riyadh, Saudi Arabia.

Through his structural background, he offers a vigorous approach to design challenges and structural details to guarantee a successful end result. Tasos is currently working on our prestigious West End development, reviewing the cladding contractors drawings to ensure they meet the employer’s requirements. This role will continue throughout the building construction, where he will attend site to review the facade installation against the design.

Working at Interface has allowed Tasos to further develop his passion for facade engineering and further apply his range of technical skills that have proven valuable to us and our projects.

Chierol Lai

Chierol Lai

Facade engineer

More about Chierol

Chierol Lai, Facade Engineer

Chierol joined interface as an engineering graduate, bringing with her enthusiasm and eagerness to learn she assists on a variety of our projects.

Chierol’s degree in design engineering provided her with a diverse knowledge ranging from material science, computer science and product design, allowing her to provide a technical and creative point of view for the design and development of our projects, including Lancelot Place and Waterloo Retail facade.

She is proficient with a selection of creative and 3D modelling software, and is very passionate about fine arts. She is also brings additional languages to our team including Dutch, Mandarin and Cantonese, which will be useful in subcontractor discussions in particular.

With the assistance of interface, she has planned her development to expand her range and depth of knowledge of facade engineering with the goal of managing her own projects and to truly find her own niche within this multi-faceted discipline. She is planning to take a masters degree and to become a chartered facade engineer.

June Brown

June Brown

Admin Assistant

More about June

June Brown, Admin Assistant

June is the Administration Assistant here at interface and has an important role in assisting the team with the management of our office and finance systems on a day to day basis.

June brings vast experience from within the construction consultancy field to assist in the running of our finance, document control, administration and procedures within the business to help the company run as efficiently as possible.

June also has a role in maintaining our systems to meet the high quality that our ISO 9001 accreditation demands.

Our scope

Our detailed scope list assists in the preparation of the façade engineering scope. Early identification of the façade types (usually by method of construction) assists in the rationalisation of the construction methods, the identification of suitable façade contractors, and the capturing of the design criteria.

 

When combined with a detailed understanding of the procurement strategy for the façades and the programme, interface can identify a rational and achievable way to deliver the performances required.

Wind tunnel test model

1. Concept design

(Previous RIBA Stage C) We’ve found that the initial stages of design can most influence the project’s success. For example, the buildability of high-rise buildings depends upon good rationalisation of the façade to enable the most efficient fabrication, installation and well managed interfaces. This needs to be carried out early in the design process as this can often influence the architectural solution.

IFE Design Development sketch01

During the concept design stage, it we’d want to carry out a review of the key drivers for the façades and any key issues that need to be accommodated. We’d also identify options for any alternative approaches to the design which may have economical performance or buildability benefits.

Conducting this verification in the earlier stages delivers the best value and strengthens  the design solutions. It is during this crucial stage that the basis of the architectural intent is forged. We can proactively impart our knowledge of manufacturing and processing capabilities and limitations to ensure the architectural concept is not compromised later on by unforeseen hurdles.

2. Developed design
(previous RIBA stages D & E) These stages are dedicated to developing the key criteria for the façades and identifying the principal performance demands. The individual façade systems are identified and rationalised into main types. It is often found that it makes more sense to combine types by systems to allow these to be designed and delivered as a single entity, even with quite extensive variations.

stage3

We produce a Design Criteria report to capture our proposals for the façade systems, the structure, materials, loading requirements and maintenance. This is carried out as early as possible and circulated in early draft form as a significant coordination tool.

The structural coordination is essential throughout Design Development as this part of the design progresses to site first. Coordinating movements and tolerances, as well as support and restraint for the façade, is essential during this stage. Coordination with the services strategy and into the detail of the services models is also key. This allows close coordination of the criteria allowing for economic solutions to be identified and agreed between disciplines that fit the architectural intent and achieve the required standards.

Interface see the façade design workshops as a key method of maintaining a well coordinated and achievable design. The interfaces are set out in an initial interface schedule developed at this stage to highlight potential ‘risk spots’ to be actioned. We know that the detailing of the façade should always be informed by its most challenging aspects. We work closely with the architects on each project, reviewing system proposals and details and preparing options and variations to identify the optimum solution. We also work at 1:5 detail level for systems at this stage, but specific details will be at 1:10 or even 1:20 to allow zone and continuity review.

Type Mark Up

We would carry out specific initial engineering analyses during this stage on areas where this is particularly required. This ensures that performance and structural drivers of the design are understood and resolvable at an early stage. Analyses of the Developed Design Stage promotes efficiency whilst preserving the architectural intent.

Our initial engineering analyses include structural and thermal analysis of key areas and determining structural sizes and calculating required U-Values to determine the wall zones needed. We would also carry out a solar study of the buildings to understand the solar incidence on each of the facade and identify the necessity for solar shading on each area and provide the input data needed to evaluate the effectiveness of any solar shading devices at a later stage.

A facade with a complex geometry will often have a variety of key construction solutions to be compared. It may be that there is an advantage to present more than one solution, each option presenting different fabrication or installation benefits to the different cladding contractors, but each with its own significant pitfalls. Early identification of these allow close scrutiny and detailed discussion with the team and with cladding contractors.

Material samples

During the Developed Design Stage interface aim to initiate discussions on material options. We advise at this stage on their suitability by refining the selection with appearance, durability, application and cost being considered and scored. We have developed a system that allows considered, rational selections to be made.

This ‘decision matrix’ allows the team to not only be sure the various aspects are considered and weighted correctly, but captures this information so that it can be easily referred to at later stages should re-appraisal be needed. We carefully review proposed materials with particular attention to durability maintenance and replacement in mind. We include all of these considerations and advise in our Design Criteria report.

We regularly distribute our consolidated information within our Design Criteria report to all related disciplines, requesting particular feedback from specific teams to progress the facade design and maintain the programme. Within this document we also capture the Design Risks. These are documented along with the suggested mitigation opportunities and any ‘close out’ solutions. Being part of the Design Criteria report allows this register to be regularly updated and where necessary carried through the next stage.

3. Technical design

(previously RIBA stages E, F, G & H) Coordination of the façade continues right through stage 4 (previous RIBA stage E) and on towards tender. The Façade Design Criteria report continues to be used to capture changes and allow the design team to coordinate with the façades. This allows efficient working across the team as well as a lean design and the close out of any design risks that remain.

The interface schedules and façade types mark ups are updated and expanded to include the key interfaces and all the main types. This invaluable and simple tool facilitates an organised approach to the design of different potential design systems and the cost plan and packaging of the contract for tender. System development and interfaces are prioritised to allow the more complex areas to drive the design, which results in ultimately simpler solutions.

Wind Tunnel Testing1

We would expect any wind tunnel testing required to be completed early on in this stage. This will allow our structural analysis to be commenced and for accurate sizing of facade members to be carried out for each of the identified facade types. These are needed to confirm the facade zones and are particularly critical for long span elements in atria or lobbies and the more complex facade types such as pre-stressed cable facades. We are involved in the briefing of the testing and produce an interpretative report to inform the design of the facades.<

Thermal analysis is also advanced early on in this stage to ensure the design conforms to the required u-values needed for the overall facade and for each element, to be sure that we have a sensible thermal solution. Where difficult interfaces are identified in the interface schedule, the detailing of these can be advanced early to allow our isothermal analysis sufficient time to influence the overall detailing and make sure robust details are developed for tender. The necessary g-values for glazing would be determined and any solar shading devices would be analysed and optimised during this period.

Isotherm Model1

We assist with the materials sampling and review the options available with a keen eye on durability and maintenance as well as price, again using a decision matrix to assist in the decision making process and to capture the outcome. As part of the expansion of the Design Criteria report we would include the material details and the necessary testing regimes.

We also include the areas of any prototype testing required. The development of the facade details is continued through workshops and a review and sketch over process. We recognise the importance of preparing for procurement where it can be crucial to ensure the number of suitable facade contractors who can tender for the job is not compromised by the design.

We resolve the detailing in such a way that it becomes both rational and recognisable to a range of facade contractors. This would ensure that the job is awarded to a facade contractor with both the right factory capacity and design capabilities at the time for the building in question. The interface schedule and facade types mark up are expanded and the interface details developed are also expanded and tested with manufacturers.

During this stage intensive workshops give value and we drive the process forward promptly and allow necessary discussion. At the end of the stage the Design Criteria report has information appended to it and becomes our stage report. This provides an efficient and coordinated reporting system that is already embedded in the working practice of the team.

Stage4

During Technical Design the issues and opportunities will have been identified aiding the coordination and identification of the suitable cladding contractors. This is a key process for the success of the overall project. With a tight set of information available from the previous stage, this stage concentrates on the “particulars”. Individual interfaces are intensively interrogated without prejudgement to deliver buildable, working solutions that adhere to the design intent.

The Design Criteria report acts as the coordinated base document for the specifications. We make sure that all information from the Design Criteria report is successfully transferred into the specifications, that the materials, testing and acceptance criteria are coherent and sufficient for the project and that the document captures the particular requirements of each individual project.

Once the tender returns are received we carry out a technical tender review which captures the key technical issues and delivers these in a concise and understandable way. This would be accompanied with an issues log which allows the tenderers to respond to questions and any inadequacies identified and allows the team to gain confirmation of items that are unclear. The target is to get an equivalent tender response to allow proper comparison and to close out as many of these areas prior to contract.

4. Construction

(previously RIBA stages K & L) The cladding contractor design programme is the most important initial document for review. This allows the team to coordinate with the cladding contractor in a meaningful way and assists greatly the smooth development of the design. This is particularly important where multiple cladding contractors are involved and coordination between programmes is essential to avoid delays.

Contractor design workshops are encouraged as a concise method of working. This must include coordination sessions with multiple cladding contractors where present. We aim to establish key designer relationships to allow clear, easy lines of communication for faster, simpler resolution of issues. This is essential for complex detail or engineering issues where direct discussions are necessary to achieve prompt resolution.

62 Buckingham Gate construction

The first period for all packages is the system design. This is a critical period and one in which the design team know the project better than the cladding contractor team and need to impart that information into the developing design. The understanding of individual interfaces developed during the earlier stages is essential for the design of the systems to be carried out correctly. We take a very hands on approach to this critical high level design period and expect the contractor to produce details and detailed structural and thermal analysis of the systems proposed. We like to have System design as a stage within the programme so that this can be seen as the milestone that it undoubtedly is.

When this stage is complete, the detailed information is developed for the variations around the project. Our familiarity with the systems allows the review to be carried out efficiently and in detail. We encourage the cladding contractors to prepare schedules of their design works for circulation to the team indicating progress and status. If these are not forthcoming, we have our own simplified versions that allow us to monitor the design process and to assist in the concurrent development of the differing strands of the design.

We encourage early submission of materials information. This is often difficult to achieve as it can limit the commercial opportunities for the cladding contractors. However it does allow essential assessment of the materials for their performance and their compatibility with each other. This is particularly important for items that are the link between cladding packages where compatibility checking takes greater time. Early factory visits to potential key suppliers would be carried out at this time. This would include the glass processor which is always key to the project’s success.

Prototype testing

Quality samples submission should then follow and allow the early agreement of the acceptance criteria and make sure that the suppliers are fully aware of the quality requirements of the specification.

Prototype testing is a key stage of the project. With residential buildings it is likely that there will be interfaces between different cladding contractors and this will be the first time they have put their respective designs together. We generally insist on testing within the UK, this may take a little longer for non-UK contractors, but will involve the installers who will be carrying out the installation on site. It is vital that this is used as a learning exercise for construction as well as a confirmation of performance. We always attend the dismantle as this is a key to the assembly and  confirms that the installation was carried out in accordance with the design – or not. We usually provide an initial report on testing. This allows the project to move forward with confidence that the test has passed, whilst the test house completes their report.

Glass processing factories are visited to review the first batch ahead of a large order. An earlier visit can also prove beneficial to be sure that the quality requirements are fully understood and will be adhered to. Key areas are edge quality and the visual acceptance criteria. We have developed a clear methodology for confirming agreement of visual acceptance criteria as this is currently proving to be problematic with many processors due to the variability of bespoke orders.

Factory visit

We would expect to carry out assembly factory visits early on in the production. This allows review of the components being procured as well as the assembly processes and quality. Most importantly, it can catch any errors early on in the production, where they are most likely to occur. Factory visit reports and issues logs are prepared and used as a tool to allow confirmation that the issues are dealt with and closed out promptly.

Pre-installation review of components is carried out during our site visits. These allow close inspection of elements which may only be reviewed much later from the BMU when it is available. We take a proactive approach to site, raising issues as soon as they become apparent to us even on incomplete works. This is to prevent repetitive errors occurring through the works.

Our aim on site is to be part of the delivery team, assisting to maintain the quality and  resolving difficult issues. We understand the complexities of site and the pressures of programme and we engage actively in the resolution of site issues. Our people have all learned that our early intervention and close involvement gives quicker resolution to issues and ultimately delivers our clients a better product.

5. Handover and close-out

We schedule all major issues right through to close out and handover. This assists us in closing out the issues and ultimately speeds up the process for all. Our logging systems are there to assist us and prevent revisiting items and issues already resolved. We actively support continuity of our staff through to the conclusion of the project as we understand that this gives efficiency to us and to the wider project team.

Stage6