IG Lintels is awarded with BBA Certification for its Hi-therm+ Lintel

hi-therm+ BBA certification david grace claire curtis thomasIG Lintels is delighted to have been awarded British Board of Agrément (BBA) certification for its Hi-therm+ Lintel making it the only BBA Approved one piece lintel solution which achieves the appendix R value for steel lintels in Part L 2013 (depending on wall construction). The Hi-therm+ is a thermally efficient lintel designed to reduce thermal bridging and improve SAP calculations. The Hi-therm+ can achieve Psi values as low 0.03 – 0.06 making it up to 5 times more thermally efficient than a standard steel cavity wall lintel.

The BBA is one of the UK’s leading certification bodies within the construction industry offering approval, certification and test services to manufacturers of products and systems. The BBA conducts rigorous testing and assessments including laboratory tests, on-site evaluations, quality management checks and inspections of production before awarding a product or system with an Agrément Certificate, making it one of the most trusted marks of quality, safety and reliability.

Throughout every stage of development, the BBA conducted assessments, audits and tests of the Hi-therm+ Lintel to ensure it met their strict quality standards. The key factors assessed throughout the testing process included structural performance, behaviour in relation to fire, thermal performance, condensation risk and durability.

Carried out by teams with detailed technical knowledge and experience, BBA certification and inspection services are recognised by building control, local authorities, industry insurers and the key construction trade associations in the UK. BBA certificates are only awarded to lintel companies who continuously carry out approved load testing and operate under strict quality control manufacturing procedures.

David Grace, Sales Director at IG Lintels commented “We are delighted our Hi-therm+ lintel has been awarded BBA certification as it is a widely respected mark of quality assurance across the construction industry. We invest heavily in research and development at IG and we are continuously looking for ways to improve our products and reach new levels of thermal efficiency. We are pleased to say that Hi-therm+ is the only BBA Approved one piece lintel solution which achieves the appendix R value for steel lintels in Part L 2013 (depending on wall construction). The BBA has been involved throughout the development process for Hi-therm+ to ensure we are providing our customers with innovative solutions which meet the highest quality and safety standards.”


Find out more about the Hi-therm+ Lintel

Use the Hi-therm+ Lintel Selector

Calculate Psi Values for the Hi-therm+



World Architecture Day- Matthew Knight explains the Martin’s Reach Project

matthew knight ig lintelsWorld Architecture Day is a great opportunity to highlight the outstanding architectural projects our engineering team have helped to deliver. Matthew Knight, Technical Engineer at IG Lintels describes how the IG team used modern manufacturing methods to deliver arch brick feature lintels which complimented the traditional style of these beautiful period homes in Nottingham.


What challenges did this project present?

The main challenge on this job was that the houses required a walk through arch to the main entrance door. To achieve the architect’s vision on the project, we needed to ensure the steel soffit wasn’t visible on the bottom of arch as people would physically walk through it. As this was a live site, we also needed to develop a solution that reduced the need for skilled labour on site. Another challenge we faced was the tight time restraints on this project, the client required a short lead time so it was also important to take this into consideration during the design process.


What solutions were developed to overcome these challenges and why did you choose these options?

The way in which we overcame the first challenge was to supply a feature brick radius arch lintel which was faced to the front, rear and underside, by doing this no steelwork was visible on the arch. To overcome the tight time restraints, we came up with a solution to meet the clients’ needs and deliver the results on a short time scale. Our production team manufactured all the steel backing lintels and then we received a consignment of the brick type used on site, we only needed to cut and bond the bricks to the already made lintels, shortening the lead time and meeting the customers’ requirements.

Avant1-smallWhat is your favourite architectural feature on this project?

The feature brick entrance arches which we supplied throughout the site on the two house types were definitely my favourite architectural features on this project. We used modern techniques to save time on site while still delivering a solution which complimented the traditional style of houses.


Why did you enjoy working on this project?

I enjoyed working on this project as it gave me the opportunity to work closely with the architect throughout the project. We designed and supplied a range of products that met the logistical requirements of the client without compromising the aesthetics of the design. We delivered a solution that perfectly complimented the traditional style of these homes.

World Architecture Day- Steven Hall-Morgan explains the Bourne Estate project

steven hall morgan ig lintels - architectureTo celebrate World Architecture Day we asked some of engineers to reflect on their favourite architectural project and explain how they helped to bring the architects vision to life and create buildings that are both functional and aesthetically pleasing. Steven Hall-Morgan, Technical Engineer at IG Lintels explains the challenges he encountered working on the Bourne Estate, a project in London’s city centre and the satisfaction he felt from contributing to the architectural landscape of the London skyline. The Bourne Estate scheme was designed to provide 75 new residential units in a mix of tenures, with improved public spaces in the London Borough of Camden.


What challenges did this project present?

Working from height in a close city centre location such as London caused significant issues for the installation of the larger lintels further up the building. The ceramic gloss brick finish was a particularly tough issue as the ceramic finish is only to the surface of the brick, with the standard clay fired ‘red’ finish under. This meant that when the bricks were cut, the clay finish under was visible. Therefore, we have to look for an innovative solution to achieve the desired look for this prestigious project.



borne estate london - architectureWhat solutions were developed to overcome these challenges and why did you choose these options?

It was decided that in order to conceal the red clay finish underneath, the bricks would have to be cut in a mitre fashion to ensure only the ceramic finish was visible. The cuts would have to be made extremely carefully as to make sure the ceramic finish on the mitre did not splinter. However the final result looks fantastic.



What is your favourite architectural feature on this project?

As much as it was a challenge to find a solution which would fulfil the architect’s vision for the development, I have to say that the ceramic bricks really do look unique on a building of this type and scale, especially the contrast between the two colour types. Also the nature of the ceramics should ensure the building still looks fresh in many years to come.


Why did you enjoy working on this project?

It’s always satisfying to make a difference to an architectural design, and to ensure that it can be achieved with great success. In a city such as London, where there are many examples of fantastic architecture and an ever changing skyline, I’m fortunate that I could contribute to such a vision.

100KM in 24 hours – Faye Rooke takes on the Wye Valley Ultra Challenge

Faye before she starts her walking challenge of 100km in the Wye Valley Ultra Challenge

Faye before she starts her walking challenge of 100km in the Wye Valley Ultra Challenge

Faye Rooke, Technical Support Administrator at IG Lintels in Cwmbran has taken on the incredible challenge of walking 100km for the second time as she completed the Wye Valley Ultra-Challenge. Faye explains how she first got into walking after receiving a Fitbit through IG’s Keyfit initiative and how this inspired her to take on the London to Brighton Ultra Challenge followed by the Wye Valley Ultra Challenge, walking a combined total of 200km and raising over £1,200 for the MIND charity.

The Keyfit initiative is designed to help employees of IG Lintels look after their physical and mental health. Employees can use a Fitbit to track their physical activity and set goals to become more active and improve their health.

Faye started raising money for MIND at the start of the year by taking part in RED (Run Everyday in January) and so far has raised over £1,200 for the charity. MIND is a mental health charity which provides advice and support to anyone experiencing a mental health problem as well as raising awareness and promoting understanding of mental health problems.

Visit Faye’s Just Giving page to donate


Why did you decide to take on the Wye Valley Ultra-Challenge?

I got into walking last year when I got my Fitbit as part of the Keyfit initiative and I started doing a few local challenges. Living in Wales it’s quite good training for any long distance walking. This year I wanted to push myself further so I walked the London to Brighton Ultra Challenge 100km – at the end of it I said never again but 2 days later I booked the Wye Valley Ultra Challenge 100km


The halfway point with 50km to go ath the Wye Valley Ultra Challenge

The halfway point with 50km to go

How did you find the training and preparation for the challenge?

I’m always out walking and as I said before, living in Wales we have many places to walk. I walked the South Wales 3 peaks (Blorenge, Sugar Loaf and Skirrid) as part of my training programme which is 22 miles and just walking everyday helped me to prepare for the challenge.


Tell us about the day of the challenge?

The overall challenge took 24hrs. I started at 7.30am from Chepstow and walked through the night and finished just after 7:30am Sunday morning at Hereford Racecourse. This was much more challenging than the London to Brighton 100km which was more flat. The Wye Valley Ultra Challenge had a few more hills and it rained from 5pm right through to the finish so as you can imagine it was quite muddy and slippery in some places and I was quite wet.

Faye receiving her medal after crossing the finish line at the Wye Valley Ultra Challenge

Faye receiving her medal after crossing the finish line at the Wye Valley Ultra Challenge

Luckily I got chatting with two guys from the beginning and we walked together. Unfortunately one of them had to pull out at 74km as he had slipped and hurt his knee but myself and the other guy, Andy, finished together. It certainly helps to walk with someone as you can keep each other motivated and we both knew we were raising money for good causes.

Crossing the finish line is a mixture of feelings – you’re emotional because you’re so happy that you’ve completed it but most of all you feel exhausted and just want a hot bath and sleep.

Roll on next year for some more!

Architecture in Action, Creating Landmarks on England’s South Coast

a51a55ee3e08d54e627c5ea0f74d48baf7ff2bf1HGP Architects has helped shape the built-landscape on the south coast with award winning projects. Director Matthew Williams shares his views from a busy practice with a special focus on waterside regeneration.

Who is HGP Architects?

HGP Architects has a reputation built on nearly five decades of inspired building design for clients across diverse sectors. Established in 1968 on the South Coast, the success of it’s earliest projects in banking and office development led to rapid diversification into marinas, residential and other sectors. The work of the HGP team has attracted industry recognition in recent years with awards that include The Times Conservation Award and RICS Project of the Year Award. The iconic Spinnaker Tower, designed by HGP, is rated among the nation’s top five buildings people are most proud of.


How did you get started in Architecture?

I loved architecture and buildings from an early age. I was very fortunate to experience a lot of travelling with my parents when I was younger, seeing different areas of the world. We went to America quite a lot, so I was exposed to the work of architects like Frank Lloyd Wright and Louis Kahn. Interest in a few of their buildings gave me the bug. My family were involved in property development, buying land and building on it, so from a young age I was interested in everything related to construction.

“For me it’s walking into the finished article and seeing the customer or the client’s face light up when they see the final product.”


How long have you been with HGP Architecture?

matthew williams HGP architects ig lintels

I started with HGP in my student days as well as getting some experience in a number of other practices. I came back to HGP Architects and 18 years later, having worked up the ranks, I am now one of the owners. Most of my time is spent working on regeneration projects and within the practice we have developed a specialism in waterside regeneration. We are known for doing waterside mixed-use buildings that include restaurants, apartments and leisure. We have delivered marina schemes on the south coast and around the world. It’s HGP’s 50th Anniversary this year and we are marking this achievement with a number of events and celebrations.

The founder Hedley Greentree sadly passed away last year but we continue to build on his reputation; the company now has 80 employees, 2 offices and is looking to expand all the time. Our local client base is also spreading its wings so we would like to expand our service with them across the south coast.


What do you love about Architecture?

For me it’s walking into the finished article and seeing the customer or the client’s face light up when they see the final product. I still get a thrill from taking a project from an initial sketch to the point of exploring the spaces with them for the first time. I remember when we were doing the Ben Ainslie Racing Building, walking around the building with Ben when it was finished and he was just so happy with the way the staff interacted with the building. They had moved from temporary accommodation to this fantastic purpose designed facility and they were saying how unbelievable it was to see its impact on productivity with staff in a relaxed mood. The new building allowed them to achieve more because of the way work flow went from the production of the boat to the design of the boat and back again, facilitating how the sailing team could interact with the boat’s designers.


How did you get so involved with the house builders?

We are lucky to have developed close working agreements with companies such as Crest Nicholson and I now chair the architect’s panel for them. They have 5 practices they currently use and the panel’s role is to make sure set procedures are followed, ensuring efficiencies are achieved through the drawing package and into procurement. We have probably got about 5 large regeneration projects on for Crest Nicholson at the moment, nationwide. We enjoy this relationship and find that when you have repeat business you gain an understanding of their work flows and procedures, this allows us to deliver efficiencies and the clients get quality architecture.


HGP Architects has been involved in many award winning projects. What has been your favourite to date?

land rover bar america's cup HQ

HGP architects designed the Spinnaker Tower in Portsmouth Harbour while I was still a student and of course it is now a national landmark. The main project that is special in my heart has to be the BAR building, that’s won 6 awards and its innovation is still being featured in the architectural press. The actual process of delivering that building was done over 18 months from inception of the idea to BAR holding the regatta out of the building. To achieve this, we utilised offsite fabrication and BIM played a major role in its development.


How relevant is the expansion of offsite construction to Architects?

I hear all the time from my clients and site teams that they can’t get the quality of tradesmen now that they had in the past. The required levels of quality and expertise onsite are getting increasingly rare, we are happy to encourage the use of offsite fabrication to maintain the quality. This is a trend I can see developing further, at pace. The brick laying trade is particularly difficult and for example, they were really badly affected by this year’s weather, a lot of sites were snowed off. Offsite fabrication is not weather dependant and no matter what time of year you go to site, the quality is still being maintained.

As far as integrating offsite fabrication into our design model, it gives us a better idea of how the co-ordination is going to work. We use BIM Models from the manufacturer and can rely on those details being accurate onsite, so this is a great boost to the design management of the whole project.

“Levels of quality and expertise onsite are getting increasingly rare so we are happy to encourage the use of offsite fabrication to maintain the quality”

Top 10 tips for installing a lintel with IG Lintels

Tips for Installing Lintels IG Lintels has teamed up with Roger Bisby from Skill Builder to bring you the top ten tips for installing a lintel. We explore the key issues to look out for when installing a lintel on your project and Roger shares his top tips to ensure a stress free installation and a high quality finish.


  1. Install with a 150mm minimum end bearing
    Ensure the lintel is bed on a full bed of brick laying mortar with a bearing of at least 150mm on each end.
  2. Ensure the lintel is level along its length
    It is important to ensure the lintel is completely level not only along the lintel but across the lintel as well.
  3. Raise inner and outer leaves simultaneously
    When laying bricks, remember to bring both sides up simultaneously to avoid eccentric loads and rotation. The maximum you should build brings up on any side is 225mm before bringing the other skin up to meet it.
  4. Allow mortar to cure before applying floor or roof loads
    Always allow the mortar to cure before applying any floor or roof loads. If you can’t wait that long then make sure you put temporary props under the lintel to support it while the curing is taking place.
  5. Use a DPC or cavity tray
    It is important to use a DPC, membrane, or cavity tray when installing a lintel. Not only is it a NHBC requirement, it is also good practice as it can prevent problems in the future. Make sure there are weep holes to take the wash away and very importantly, turn the membrane or DPC up at the end so the water doesn’t run off the end of the lintel and down into the cavity as this can create damp patches in the future.
  6. Avoid shock loading or dragging
    If you are placing floor loads like concrete beams on top of a lintel, it is important to apply these gently instead of dropping them down. Never shock load a lintel and also avoid dragging floor beams across the top of the lintel.
  7. Avoid point loads on flanges
    Never place a point load on the flange of a lintel, always ensure there is a minimum of 150mm of masonry over the lintel to spread the load.
  8. Flanges must project beyond window or door frame
    The external flange must project over and beyond any window or door frame. It’s a good idea to use a bit of flexible mastic to seal the joint to prevent any water tracking back in.
  9. Use soffit cladding on exposed lintel underside
    When the underside of the lintel is exposed its appearance can be enhanced by the addition of a lintel soffit cladding. Find out more about our range of soffit cladding.
  10. Do not cut lintels to length or modify them
    Always remember to never cut a lintel that is too long for your project without expert advice. Contact our experienced IG lintels engineers and check if what you are intending to do is safe and acceptable.


If you follow these simple guidelines to make the process of installing a lintel easy and problem free. If you have any questions or need any advice about your project contact us and we will be glad to help.

International Women in Engineering Day- Samantha Murcutt

To mark International Women in Engineering Day, we are celebrating the valuable contribution women make within our engineering team at IG Lintels. International Women in Engineering Day celebrates the important role women play in this traditionally male dominated industry and encourages young women to consider a rewarding career in an innovative industry. Samantha Murcutt, Technical Detailer at IG Lintels shares the advice she would give to young women considering a career in engineering.


What made you want to develop a career in the construction/ engineering sector?

I have always been interested in how things are made. After completing my engineering degree, I worked for a small engineering company that designed parts for the railway industry and tried my hand in Computer Aided Design (CAD).  I really enjoyed working on developing my CAD skills and went on to work for a German firm as a CAD designer, designing coolers on SolidWorks. I started working in IG Lintels in 2015 as a technical detailer and really enjoyed it, and still am enjoying it.


Describe your normal working day?

My typical day consists of completing special lintel drawings for approval, this can be anything from two standard lintels welded together to create a corner lintel, to a Venetian arch or bespoke brick feature lintel.


What is your favourite thing about your job?

I enjoy trying my best to give a good customer service, sticking to tight deadlines and being as efficient as possible. I also enjoy drawing CAD designs for bespoke lintels for unusual designs.


What has been your career highlight to date?

I really enjoyed my visit to The Keystone Group headquarters in Cookstown, Northern Ireland. This is where all the special lintels are manufactured. It was great to see the lintels being manufactured and made from the drawings I had produced.


What advice would you give to women considering a career in construction and engineering?

I would say, don’t be afraid to give it a go! Where ever you work, you will have a great support encouraging you to develop and improve. It is a varied, fulfilling career.


Hi-therm+ ‘Best Building Fabric Product’ at 2018 Housebuilder Product Awards

House Builder Product Awards Winner

IG Lintels is delighted to have won the ‘Best Building Fabric Product’ award at the 2018 Housebuilder Product Awards for its Hi-therm+ Lintel.

The Hi-therm lintel has been upgraded to offer even greater practicality to builders. IG has invested heavily in R&D to re-engineer the Hi-therm lintel utilising our industry leading ‘top hat’ design. The new Hi-therm+ lintel offers a low cost solution to reduced carbon emissions and is even easier to handle on site.

IG Lintels MD Derrick McFarland commented: “IG recognises the challenges facing house builders in relation to the increasingly demanding regulatory controls on thermal performance and sustainability. We recognise that a fabric first solution is preferable to builders, particularly something that is easily installed, maintenance-free and can allow them to design with 100mm cavities to ensure maximum floor space in developments. We are therefore proud to have been recognised for our commitment to the Fabric First approach. Our original Hi-therm Lintel won this award in 2013 and 2014 so for our innovative new design to be recognised again is fantastic”.

As winners of a Housebuilder Product Award, Hi-therm + Lintels automatically become a finalist in the overall ‘Product of the Year’ category at the Housebuilder Awards 2018 which will be held at a prestigious black tie evening event on Thursday 1 November 2018 at the InterContinental London – The O2.

Hi-therm Advances to Meet Market Demands


The award winning Hi-therm lintel has just been updated in response to requests from house builders to further its application. The Keystone Group’s National Technical & Specification Manager Richard Kinloch explains how this new version secures all the benefits of the original and adds new features, which widen its appeal.

Hi-therm has made a significant impact on the energy efficiency of new homes. It remains the only BBA approved thermally efficient lintel on the market and has won multiple awards for innovation. Now, its design has been upgraded to offer even greater practicality to builders and to make its benefits open to even more projects.

Richard explains:
“Originally our design was based on the most common wall construction types and the typical opening sizes found in most developers’ homes. Now, four years on, we are starting to get more demands and this has required us to re-engineer the design. For a start, Hi-therm+ will now be available to suit both wide outer leaf and cant brick applications rather than just standard leaf. In addition, longer lintel lengths are now available to accommodate larger openings.”

The same but different!

Hi-therm is a patented innovation based around introducing a polymer element into a steel lintel. This creates a powerful thermal break which dramatically reduces thermal bridging through the junction with beneficial cost and performance outcomes. Previously the design utilised a polymer outer leaf as the thermal break. This new Hi-therm+ lintel features a structural polymer thermal break in the cavity linking an outer and inner steel leaf. The resulting improvement in Psi value is considerable with figures of between 0.03 – 0.06 W/m.k to be expected depending on the specific wall make up.

Richard explains the benefits of the new design.

“Buildability lies at the heart of Hi-therm’s success because what the builder wants is a high performance lintel that can be handled and built on site in exactly the same way as standard lintels. Split lintels and other non-structural thermal breaks are not comparable in terms of buildablity and do not offer the simplicity of the Hi-therm lintel.
Hi-therm+ takes practicality to a higher level again, so it will be even easier to handle on site than before. This is an increasingly important benefit and addresses the challenge of maintaining good detailing when skill levels are under pressure and introducing specialist techniques can be problematic.”

Expert support

SAP is a complex subject and even the most experienced technical managers are likely to rely on a trained energy assessor, either from within the team or from an external consultant. It’s therefore reassuring to know that IG & Keystone’s own expert support is available. Online tools such as the Hi-therm Psi value calculator, which issues certified performance for any given wall type, will assist energy assessors.

This, coupled with the fact that Hi-therm+ is a highly tested and certified product, will give reassurance that IG is the ideal partner to provide the optimum lintel solution going forward.

Real cost savings

As more plots fall under Part L 2013, the need to reduce thermal bridging increases. It is here that Hi-therm+ makes a significant impact as its cost benefit relationship is so effective, offering significant cost savings compared to many of the popular alternatives, which builders might be considering as a solution to improved SAP performance.

For example, in a comparative case study for a house type, using Hi-therm+ would incur less than 20% of the cost of increasing the cavity width by 50mm for the same saving in CO2. These CO2 savings are important within SAP because they give flexibility for compliance in situations where other built details are not meeting the standards in Appendix R of Part L 2013.

Please visit our Hi-therm+ Lintels page for more information.

IG Lintels Now Live on bimstore

bimstore logoIG Lintels is pleased to announce that our BIM objects are now live on bimstore. bimstore is the UK’s original BIM object library. Developed by specifiers for specifiers, they create and host high-quality manufacturer specific BIM content, making it easy to browse and download a collection of BIM components.

IG Lintels is aware that BIM offers enormous gain and time saving as changes and amendments to the design are automatically altered and accounted for in quantities without lengthy calculations. Our BIM objects also embed key product and asset data and a 3D model that can be used for management of information throughout the entire project life cycle – from first concept through to operation.

2D AutoCAD drawings will continue to be available for the foreseeable future and, in the case of bespoke steel lintels, BIM models are available on request to ensure that we can fully assist design teams, engineers and architects with their requirements.

Derrick McFarland, IG Lintels Managing Director, says:
“At IG, we believe that our role within the design process is vital. Advances in technology mean that the industry is changing rapidly and, as the market leader for steel lintels, we are always working on innovative ways to improve our services for our clients. Collaborating with bimstore will make it even easier for our customers to browse and download our collection of high quality BIM objects.”

View our objects on bimstore.
Download directly from IG Lintels