With pressure on the construction industry to utilise more sustainable building methods and product choices, specifying a PVC-U solution is increasingly being seen as a way to further drive the green agenda.

Eurocell is supporting sustainability options for housebuilding and commercial projects through its market-leading PVC-U recycling and manufacturing processes that are substantially reducing the amount of plastic waste heading for landfill and helping to tackle the problem of carbon reduction. The company offers an extensive range of high performing PVC-U window and door solutions that not only look good, but also help organisations satisfy their sustainability ambitions.

Momentum is building across all parts of society as consumers, businesses and politicians look for answers to the escalating climate crisis.  Consumers want to see action and as a result, companies are looking closely at how their activities and processes are impacting the world. In the UK, the government has set out bold carbon reduction targets as part of its net zero strategy.  One key area is the nation’s housing stock and policy makers looking to deliver a difference have the construction industry firmly in its sights.

The new Part L Building Regulation and the Future Homes Standard – which is seeking a 75% reduction in CO2, compared to current levels, in new builds by the middle of the decade – is tasking architects, specifiers, developers, and construction firms with uncovering the right construction methods and building fabric product choices to support a more sustainable, energy efficient and less wasteful future.

PVC-U is already playing its part in helping the construction sector meet important environmental and regulatory obligations.  Set against other potential product choices such as aluminium or timber composite, PVC-U offers long-term durability and high performance, attractive aesthetics to support design visions, cost effective value and, through Eurocell’s vision and industry leading recycling processes, a truly sustainable answer.

Recycling with a purpose
Eurocell has been committed to supporting the aims and ambitions of recycling for over twenty years.  Recognising a corporate need to do what is required to minimise plastic waste and where possible reuse materials across large scale manufacturing processes, the company has moved from externally purchasing recycled plastic to the establishment of its own nationwide waste recycling system, used to supply Eurocell’s manufacturing operation with recycled plastic raw material.

Such has been the success of Eurocell Recycle, the result of its processes now see it account for around 80 – 90% of all the material Eurocell’s manufacturing business requires to generate an extensive range of brand-new extruded plastic products.  As part of this, Eurocell now recycles around 3.5 million discarded frames per annum, with such post-consumer waste combined with virgin PVC-U to produce extruded material used for new frames and other products such as cavity closers.

Without this service, a high proportion of the PVC-U waste generated by large manufactures, fabricators and installers would simply end up in landfill and contribute further to the waste disposal challenge the UK continually faces.

‘Closed loop’
The ‘closed loop’ system is a six-stage recycling process.  Starting with a national collection service operated by Eurocell Recycle.  Old and discarded PVC-U windows, door frames and other PVC-U offcuts are collated by Eurocell Recycle’s fleet from company locations and waste management centres across the UK.  On arrival at one of the recycling processing plants, the material undergoes an extensive sorting and separation process which divides metals, white polymer, and coloured materials, as well as capturing material which is ultimately non-recyclable.
After a transformative process which creates a powder or pellet form that matches virgin PVC-U material, the recycled plastic is used by Eurocell to manufacture its extensive range of extruded PVC-U products.   The fabrication of new products such as window and door profiles then follow, leading to the installation of many new products in homes and commercial buildings ultimately fashioned from thousands of old windows and door frames that have reached the end of their working life.

And the recycling process promises much for the future.  New PVC-U windows using recycled polymer can last up to 35 years and the material can be further recycled up to ten times delivering ongoing sustainability benefit for generations to come.

PVC-U performance
When set against alternative product choices for windows and doors, PVC-U is proven to deliver an enhanced thermal performance. Combined with effective glazing solutions, buildings can be better insulated and use less energy with PVC-U’s ability to offer a lower U-value for lower cost.   For large scale housebuilding developments or commercial projects, the option to achieve excellent thermal performance results through a cost-efficient product choice without compromise, is a reason why PVC-U and popular Eurocell solutions such as MODUS and LOGIK windows that contain high levels of recycled content, are becoming the sustainable product choice for many.

Proven benefit
With carbon saving the true test of strategic sustainability plans, Eurocell is committed to working with the sector to deliver tangible results and undoubted benefit.
By transforming waste PVC-U material destined for landfill into a high performing, thermally efficient, aesthetically pleasing, and cost-effective PVC-U window and door solutions, Eurocell is the proven sustainability choice for the construction sector at a time when it is needed more than ever.
For more information about Eurocell’s extensive range of PVC-U solutions and its commitment to a sustainable future, please visit the website.

www.eurocell.co.uk

By James Mead, projects director at Saint-Gobain Weber.

If you ask most people what their house is made of, the chances are they’ll tell you it’s made of bricks. In fact, around 70% of the UK’s new homes are built with a brick façade proving that this traditional style has retained its popularity since 7000BC, when the people of Jericho made the first bricks from mud and dried them out in the sun for hardening.

Today’s bricks are kiln dried and are much heavier than a mud brick – so the costs in terms of freight, emissions, weight, space, and storage are significant. The other pressing issue with bricks is bricklayers: They’re in very short supply and laying bricks is such a skilled craft, it takes a long time to gain the experience to do a decent job.

With a call for bricklayers to be added along with lorry drivers to the Government’s Shortage Occupation List, and existing bricklayers charging a premium, we need to find a way to construct buildings that are traditional in style but modern in construction.

Those building homes in the social housing sector also have another concern: the Government’s Affordable Homes Plan, delivered through Homes England, specifies that the projects it funds must contain a minimum of 25% MMC. It also sets a measure against which MMC projects will be assessed – the Pre-Manufactured Value (PMV). This is the financial proportion of a project’s gross construction cost through pre-manufacturing. To pass Homes England’s MMC test you need to have at least a 55% PMV.

 

Calculating PMV

To calculate a building’s PMV, each element that is delivered through an MMC process or product will add to the overall percentage. There are seven categories awarding percentage points. For example, in category one is ‘Pre-manufactured 3D primary structural systems’ like a volumetric modular housing unit. This will give you the highest percentage. In category three ‘Pre-manufacturing components (non-systemised primary structure) components’ – such as beams, staircases or trusses would also boost your percentage.

Category six deals with building products and systems that reduce labour on site and improve productivity. One area where it’s easy to specify a PMV improving element is using a modern alternative to traditional brickwork.

Encouraging MMC in the private sector

Of course, it’s not just in the social housing sector where the principles of MMC and increasing the use of off-site manufacturing are important. Private housing developers must also adopt MMC to play their part in the fight against climate change.
The construction industry is responsible for 38% of CO2 emissions, so any products that can reduce both wastage and HGV deliveries to sites are going to make a huge impact on this figure. MMC also addresses labour shortages by using products made in factories without the need for specialist skills, and off-site manufacturing reduces construction waste which accounts for 59% of waste produced in the UK.

Traditional in appearance, modern in application

Saint-Gobain Weber has developed weberwall brick to help bridge the gap between traditional and modern methods of construction. We have developed a façade alternative that gives the appearance of brick but can be fitted without the need for specialist labour on site. Once applied, it feels and looks just like the real thing.

Ideal for developments or refurbishment projects where planning permission requires a brick façade, weberwall brick is lightweight and quick to apply taking around 17 minutes to install 2sq m. Cladding the equivalent area in brick slips takes just under an hour and when the whole build is taken into account it can be up to 50% faster than using a traditional brick slip
The lightweight brick slip system can be applied directly to the substrate with a specially formulated render. It is then pointed in the same way as a standard brick so, once installed, looks no different to traditional masonry.

It can be programmed into CAD systems to minimise waste and is designed for use with the most commonly used MMC systems so ideal for steel, wooden frame and panellised systems. weberwall brick forms part of BBA approved systems and is suitable for new build or refurbishment projects where it can give a building a completely new look.

If developers are going to truly grasp MMC to combat the housing crisis through centralised funding, they are going to need to adopt creative and innovative solutions to increase their project’s PMV whilst conquering the multiple difficulties posed by today’s construction industry, weberwall brick is certainly up to the challenge.

www.uk.weber

Parkside is a new 1,500m2 building designed and built as a collaborative and creative space for Imperial War Museums’ staff in Southwark, London. The three-storey building provides a flexible workspace for 180 staff with formal and informal meeting areas, a café and breakout spaces.

Parkside is designed to support IWM in fulfilling its vital mission to improve public understanding of war and conflict through its exhibitions, events and programming. The new space will also support IWM’s commitment to develop smarter working practices across the whole organization.

Architects Jestico + Whiles developed IWM’s vision into a striking design and Reds10, delivered the building using the latest off-site construction techniques.

Eurobrick has over 30 years’ experience working with off-site construction companies to provide a flexible, real brick finish that allows for some creativity in the finished design. They offer brick and stone slip systems to suit any project and supplied their popular P-Clad system for the IWM project, having worked with Reds10 on a number of projects already.

 

Approximately 890m2 of the P-Clad system was supplied, along with Wienerberger Marziale bricks which were specially ordered and cut. Marziale is a brick with bright buff tones and distressed features that give it a weathered, traditional look. Eurobrick supplied whole Marziale bricks for the construction of a boundary wall, along with specially cut brick slips, headers and corners.

The design of the brickwork was technically challenging, with a mixture of vertical and horizontal stretcher bond and bespoke brick soffits and sills, which Eurobrick also supplied. The recessed bays were laid in vertical stretcher bond with alternating thicknesses of brick slips to create a relief effect in the brick courses. The narrow brickwork columns between the windows were detailed with corner bricks returns into the reveals. The columns were laid in horizontal stretcher bond, with bespoke vertical stretcher bond window heads and soffits and bespoke vertical stretcher bond angled sills.

It was a challenging layout and one of Eurobrick’s most experienced approved installers, Façade Install, fitted all of the brick cladding. Some of the brick slip installation was completed in the factory and some in-situ, once the modular building had been delivered to site. Using P-Clad helped this complex design become a reality and assisted with successful project delivery. Eurobrick’s systems are adaptable and ideal for the demands of contemporary modular architecture.

“The IWM project used brick slips as the external finish throughout but incorporated a number of challenging details. Eurobrick helped develop and deliver solutions to enable these details to be constructed. Reds10, the architects and client are delighted with the new facility. We have worked with Eurobrick on a number of projects and found them very helpful and responsive, providing excellent service.” Reds10

The project brought together offsite and traditional construction techniques to deliver a complex modular build, with difficult site conditions in Central London. Despite the COVID-19 pandemic, the project was successfully completed in 2020. The end result is an impressive building with a level of detail that proves the versatility of P-Clad perfectly.

 

For more information on Eurobrick systems and products, please visit www.eurobrick.co.uk or call 0117 971 7117.

 

 

A new concept in affordable housing is being proposed in Bristol for council owned eco homes to be built on a disused garage plot in the city.

The ‘Gap House’ concept and designs have been put forward by international architecture practice BDP’s Bristol studio, in partnership with the Bristol Housing Festival and a potential site has been identified in Horfield in the north of the city.

Early design proposals for a row of nine affordable, one-bedroom, two-storey, modular constructed homes have now been put forward for consultation with the local community.

The Gap Houses would be contemporary, cost effective, net zero homes, largely factory built using modern methods of construction (MMC), in order to minimise disruption in the existing neighbourhood.

 

Designed to fit into small garage sites which are often disused in many cities and neighbourhoods, the homes will be super-insulated for minimal heating requirements and include renewable energy with solar PV panels and air source heat pumps, resulting in minimal environmental impact and low running costs.

The stylish, contemporary design is made up of an open-plan kitchen-living area and bathroom on the ground floor, with a bedroom and storage on the first floor. Large windows allow for maximum natural light. The houses generously meet national space standards for a one bedroom unit.

Proposals are being developed in partnership with Project Etopia – an MMC Zero Carbon housebuilder.

The proposed development site sits between two rows of back gardens from existing homes and would also include shared green space, community gardens and outdoor seating in front of each home to encourage local community connections.

This new concept is the latest in a series of innovations supported by Bristol City Council and the Bristol Housing Festival to tackle the city’s housing crisis.  The Gap House is part of a wider research, development and innovation programme, funded by Innovate UK looking at the potential for Modern Methods of Construction (MMC) in increasing the scale and pace of the delivery of beautiful, quality, sustainable affordable homes in the city. 

Martin Jones, landscape architect director in BDP’s Bristol studio says the ‘Gap House’ concept has the potential to be rolled out in cities and towns across the UK,

“These contemporary and cost-effective Gap Houses are designed to fit on to urban garage plots and to be highly sustainable. They are designed with large windows and low energy lighting and fitted with solar panels and air source heat pumps – and importantly they are stylish and attractive.

“Many disused garage plots on housing estates across Britain have fallen into disrepair, becoming a magnet for anti-social behaviour. Placing these new, carefully designed houses in their place will not only help deliver much-needed homes, it will also bring new energy and life, revitalising neighbourhoods and helping to build stronger, more resilient communities.”

 

Councillor Tom Renhard, Cabinet Member for Housing Delivery and Homes at Bristol City Council commented:

“The consultation relating to the site near Bell Close in Horfield, Bristol is proposing nine affordable and highly sustainable homes with shared green space, community gardens and outdoor seating areas.

“The Gap House concept has the potential to revitalise this disused garage plot and deliver much needed affordable housing. Manufacture of the houses would largely be carried out off-site which would cause less disruption than a traditional build during the construction phase.”

 

Jez Sweetland, Director, Bristol Housing Festival said:

“We are delighted to see this derelict site be used not only to deliver affordable homes but revitalise the neighbourhood and help to build stronger, more resilient communities.”

Grégoire Capron, architect designer for Project Etopia added:

“We are extremely excited to be working with BCC on such an innovative project, providing the opportunity to showcase the homes of the future and how we can achieve them. This scheme has the potential to impact on every local authority in the Country demonstrating how to improve smaller sites and deliver more affordable homes.

“We are here to prove that sustainable homes are not just a luxury, but accessible to all, as they should be.”

The consultation is open until 14 July and available on Bristol City Council’s Consultation Hub here.

 

 

Starship to deliver first factory built Zero Carbon affordable homes at site of Wirral blast.

Property Development Group Starship has launched its first zero carbon affordable homes at the site of the 2017 gas explosion on the Wirral. The explosion ripped through New Ferry injuring over 80 people damaging or destroying nearly 70 properties and it’s the first regeneration project to launch at the site.

These first Carbon Zero homes will provide over 105 M2 of modern, affordable living space which will be installed in as little as 7 days ready for internal fit out.

Starship’s unique panelised model means that a new home can be delivered and installed anywhere where a refuse collection vehicle can fit, with no special arrangements or unnecessary disruption to the community. Their focus on driving local enterprise means that local contractors are used to provide internal fit out and finishing works meaning that maximum economic impact is delivered locally.

Starship have provisionally agreed a deal with a registered provider to acquire these homes and are working with other providers and private investors to deliver more of these innovate affordable homes.

About Starship

Starship Group was formed in 2020 following the acquisition and merger of several existing property development and construction businesses and is backed by a private investment fund. The newly branded group has previously built over £75m of residential projects across the North West, Worcestershire and Oxfordshire. The group already has over £30m of developments in progress with a further £50m in negation

In addition to its core property development activities Starship is investing in cutting edge modern construction methods to meet the UKs growing housing demand. In 2020 Starship launched its first manufacturing facility in Deeside which is the first of several planned manufacturing centres that will open across 2021/22.

Dave Dargan, Director of Starship commented:

“We are delighted to be delivering these innovative low carbon homes in a community that has seen some significant challenges over the past 5 years. To be bringing such an exciting project to the area is fantastic and creating a real buzz. These spacious homes will have the lowest running costs of any property in the immediate area and are delivering more affordable living for local people.

Our homes are hand build in our manufacturing centres and finished by local contractors so each home we deliver creates real jobs and real local opportunities for people”

 

 

Mammoet supports the new construction of one of the heaviest bridges in Linz, Precision engineering safeguards the project’s tight schedule
As the over 100-year-old railway bridge crossing the Danube in Linz, Austria could not be reconstructed, it was decided that a new combined road and railway bridge would be built. Weighing 8,400t (pure steel weight of the supporting structure), this would be one of the heaviest bridges installed in Austria in recent years.

Mammoet was trusted with the project by MCE GmbH, a company of the HABAU GROUP, because it had already successfully executed numerous similar waterborne bridge installation and could assure the use of its own equipment to avoid interfaces that could have delayed the project. The task for Mammoet was to move the two main supporting structures of the new bridge – each weighing around 2,800t, 100m long and 32m wide – from the pre-assembly area on the side of the Danube to the piers in the middle of the river.

 

 

Early in the planning phase, a tight schedule was drawn up in cooperation with the customer to minimize disruptions and interruptions to shipping traffic on the highly-frequented waterway. The engineering concept was to use Mammoet’s Mega Jack 800 for the jacking of the two bridge segments. This system was capable of raising the 2,800t bridge segments from their pre-assembly height to the float-in height quickly and safely.

During the preparatory engineering phase, Mammoet’s team received the information that the two steel structures would be heavier than first planned, due to necessary additional strengthening measures. Thus, the original engineering concept had to be adapted as quickly as possible without jeopardizing the project’s tight schedule.

Mammoet’s engineers planned to move the bridge sections from their point of assembly via SPMTs, driving them onto barges, which would then be accurately positioned above the bridge foundations for installation to take place. The water level always had to be monitored, as high or low water would have meant delays in the schedule.

Other challenges were provided by the very confined pre-assembly area at the side of the Danube, and by the difference in center of gravity between the two bridge structures, which naturally needed to be accounted for in the engineering plan.

After the completion of the intensive planning phase, the execution took place under the interested gaze of the public via live streaming. Four barges were coupled together forming a single vessel and 120 axle lines of SPMT including supports were installed and moved onto the barges.

The first bridge section was jacked up with four Mega Jack 800 towers. The SPMTs were driven from the barge back onto land and took over the weight of the first bridge section.

The bridge segment could now be driven onto the barges with the SPMTs and precisely rotated into its final position with winches, floated in and then lowered onto the bridge piers for installation.

In another multi-day operation, the second bridge section followed accordingly: jacking up, driving onto the barges, rotating, floating in and installing. Due to the heavier weight of the second bridge section and its off-center center of gravity, the engineering concept was adapted so that the second bridge segment could be jacked up by six Mega Jack 800 towers instead of only four.

These operations took eleven days in total. On the day of rotation of the first bridge segment unforeseen morning fog caused a time delay. Mammoet was able to make up some of the lost hours and the closure of the Danube could be lifted after a short delay.

Due to precise planning and excellent cooperation, both bridge segments were safely floated in and installed, and the Danube could be re-opened ahead of schedule several times. The bridge is expected to be completed in October 2021 and, as a key project, will greatly relieve urban traffic in Linz in the future.

 www.mammoet.com

 

“This month our Hundegger Turbo cut arrived on site. This saw is becoming widely known as the best saw of its generation for cutting truss and timber frame material. Fuelled by files from Mitek software, the speed and accuracy at which it cuts timber is second to none.  This allows Roof Profiles to produce more volume of timber, to the highest quality standard”

Company Director Johnny Fellingham.

Due to the accuracy of the cut timber the tolerances in all the timber joints, both in our finished roof trusses and timber frame panels, are zero millimetres.  The benefit of this is multi-faceted as it makes it quicker for us to assemble and press our roof trusses and frame components and nail our wall panels as there is no need to make final adjustments for components to fit together, exactly.

The Hundegger Cambium software enables Roof Profiles to have complete transparency of productivity, timber yield, waste percentage and stock profile. Never has Roof Profiles had such a facility and control on their timber usage.

Additionally, the finished product that we then send to the building site pieces together in exacting dimensions in accordance with the building plans.  Furthermore, should there be any technical issues with the saw that we are unable to resolve internally there is excellent remote back up from Hundegger’s base in Germany.

The Hundegger support staff can dial into the machine and using mobile camera technology normally resolve issues immediately or identify any parts requiring replacement, allowing us to resume production with minimal interruption.”

www.hundegger.com/en_gb

In photo Co-directors, Carol Smith centre, Kenny Smith, centre right, and Johnny Fellingham left. Operators, Craig Speirs and Lewis Corson.

 

OEM’s Hydradig excavator being used to test advanced techniques for offsite construction

A JCB excavator is being used on an €82 million project to test advanced digital techniques for offsite construction.

The Hydradig machine has been installed at the Manufacturing Technology Centre (MTC) in Coventry, UK, where researchers are digitally mapping and analysing the movements it makes in assembling and installing manufactured components, as part of a project called Big Yellow Robots.

The  aim of the UK Government-backed project is to explore the potential for increasing the efficiency of offsite construction – a fast-growing sector, which promises cost and time savings, as well as increased sustainability.

The hydradig is equipped with a two-piece TAB main boom and a tiltrotator. As it undertakes a range of lifting, placing movements (even writing on a whiteboard with a pen), sensing technology attached to the excavator and an array of cameras, plot its ever movement.

One aim of the project is to develop technology that allows the automation of more of the offsite prefabrication work undertaken by heavy machinery.

If repetitive tasks, or those requiring extreme accuracy can be automated, the team believes non-skilled operators will be able to undertake tasks currently requiring highly-skilled and experienced operators.

Mark Ireland, chief engineer of technology strategy at the MTC, said, “As part of the Construction Innovation Hub’s transformative programme, we are looking at a range of technologies to help the assembly of offsite components. That could be through robotising construction equipment, or ensuring robots can work in a construction environment. Our ultimate goal is to apply kinematic modelling to construction machinery.”

 

Source: KHL

 

 

Cogent Technology has moved into a new 80,000ft² facility in Felixstowe, to serve its clients with world class manufacturing. The new facility features state of the art production lines, including two ISO 14644-1 Class 7 Rapidbloc cleanrooms for its innovative medical and healthcare products.

Rapidbloc Cleanrooms have been developed by Connect 2 Cleanrooms (C2C) to meet the urgent critical demands of some of the world’s fastest moving industries, such as healthcare and advanced manufacturing. Clean production will enable Cogent to grow its product offering and expand services to clients with consumables and accessories that complement existing PCB assembly product ranges.

The two Rapidbloc cleanrooms were designed and built in just 8 weeks, including validation to ISO 14644-1 class 7. This expedited time-scale was important to Cogent as the cleanrooms were able to be coordinated within its wider facility fit-out programme and so production was not interrupted.

A monobloc cleanroom project of this scale would usually have a lead time of up to 4 months, whereas Rapidbloc Cleanrooms generate significant productivity gains to enable a faster return on investment. Rapidbloc cleanroom layouts are fully configurable and as parts are shipped from stock from C2C’s warehouse and distribution hub, on-site assembly is fast and efficient.

Robert Stainer, Commercial Director at Cogent says, “As part of our relocation to a new 80,000ft² facility we are proud to be enhancing our Medical Device manufacturing capabilities with the commissioning of two class 7 cleanrooms validated to ISO 14644-1.

“This investment will not only enable Cogent to meet our current clients’ needs, but also position the team to facilitate the provision of associated device consumables capacity as med tech businesses rethink their supply chain strategies in light of changing attitudes to sourcing.

“The term ‘short supply chain’ is resonating throughout the business world after recent events in 2020. A more robust supply chain is needed for resilience against future events.”

Michael Wright, Managing Director at Connect 2 Cleanrooms says, “Whilst there are now a number of quick build cleanroom solutions on the market, including our own Rapid Room range, none offer the same level flexibility around configuration and specification as Rapidbloc. The choice of size, classification and optional extras is yours, in just 4 to 6 weeks.”

The ultra-clean environments are created using HEPA filtration that is 99.99% efficient at 0.3 micron, whilst the envelope uses UltraTech Versatile panels with QuadCore insulated cores to provide a level of airtightness that controls running costs through enhanced energy performance.

Michael continues, “This modular approach delivers a precision-engineered cleanroom with ISO-compliant performance, within an expedited time frame. Thanks to the use of standard parts and pre-determined design calculations, even the quotation and design stages are expedited, so clients benefit from a rapid response through the entire project.”

Connect 2 Cleanrooms also provided consumables, furniture, monitoring equipment and cleanroom training services.

To find out more about Rapidbloc Cleanrooms, CLICK HERE:

 

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Building services can make up a significant proportion of the cost of constructing, operating and maintaining a building throughout its lifespan. When specifying these systems, it’s now more important than ever to consider how modern construction methods can help to deliver improved value. Recent research from Rider Levett Bucknall has highlighted that by fitting pre-insulated phenolic ductwork instead of traditional sheet metal ductwork, it is possible to achieve a 22% reduction in installed costs and whole life cost savings exceeding 51%.

Installation advantages
Pre-insulated ductwork is fabricated from rigid phenolic insulation panels with a foil facing. This design eliminates the lagging stage and means the ductwork can be installed flush to ceilings, floors or walls – saving space. Sections can also simply be modified on site with standard hand tools, ensuring that any unexpected changes to the building layout can be easily handled.
In practice, the pre-insulated phenolic ductwork can be as much as 75% lighter than a comparative sheet metal system with mineral fibre lagging. In addition to reducing structural support requirements, this means it is possible to join several sections of ductwork together at floor level (up to 15 meters in length) and lift and fit them in a single operation – further speeding up installations.
The fabricated ductwork sections can also offer excellent performance characteristics, with systems capable of meeting air–leakage Class C and D both at low and medium pressures (ref. BS EN 1507: 2006; BS EN 13403: 2003 and BESA DW/144). This airtight design can allow the desired air flow rates to be met with smaller, more efficient fans, potentially significantly lowering long-term energy demand.

Upfront cost savings
Rider Levett Bucknall carried out a detailed cost analysis to assess how the use of pre-insulated phenolic ductwork could affect installed cost when compared with insulated galvanised steel ductwork.
For this, they consulted with a number of suppliers and installers, providing each with a standardised duct layout featuring a number of different duct dimensions and components, including straight sections, 45 and 90 degree bends and tapers. The firms were then asked to provide supply and installation costings for two comparative specifications of the different ductwork systems:

1.  Pre-insulated phenolic ductwork manufactured using 22 mm thick panels vs galvanised steel ductwork with 40 mm mineral fibre

2.  Pre-insulated phenolic ductwork manufactured using 30 mm thick panels vs galvanised steel ductwork with 50 mm mineral fibre

The results showed that based on the averaged quotations supplied for both scenarios, significant savings could be achieved with pre-insulated phenolic ductwork. In the first scenario, it was possible to achieve average cost savings of £3,735.16, a reduction of 21.8%. The savings were even greater in the second scenario with estimated costs falling by over £4,012 (22%).

Whole life savings
Rider Levett Bucknall also carried out additional analysis looking at the cost of maintaining and adapting ductwork across its whole life. Pre-insulated phenolic ductwork can typically be cleaned with a mechanical rotary brush, with polypropylene fibres and a plastic ball tip, at a speed of up to 900 RPM. It is also much simpler to make adjustments once in-situ, such as adding access hatches. The Rider Levett Bucknall analysis assumed that changes and adaptations to pre-insulated ductwork would therefore be less costly over time and that the ductwork was less likely to be damaged during routine maintenance.
The research suggested that the cost of maintaining the pre-insulated ductwork with 22 mm thick phenolic panels would be less than half that of the galvanised steel ductwork (£3,000 vs £6,190), whilst savings of 48% could be achieved on the pre-insulated phenolic ductwork manufactured from 30 mm thick panels over the alternative galvanised steel system.
This research did not consider the impact of the specification on energy demand and operational costs. Depending on the operational parameters for the ventilation system, the enhanced airtightness which some pre-insulated phenolic ductwork systems can achieve could allow considerable savings to be achieved in both areas.

Lasting value
The global pandemic has placed additional pressure on specifiers to identify savings on each project. The Rider Levett Bucknall research shows that by utilising modern approaches such as pre-insulated phenolic ductwork, it is possible to reduce both upfront and long-term costs without compromising on building performance or quality.

 

www.kingspanductwork.co.uk