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Powder Coating with Khalid Shamlawi

Khalid Shamlawi is the Specifications Manager for Jotun Powder Coatings and looks after UAE region as well as Oman, Kuwait, Bahrain, and Egypt. Among his duties is to establish and maintain strong relationships with key upstream clients and project owners to influence specification decision-making at the project management cycle. He’s a keynote speaker for all events in the region with expertise in Powder Coating. Jotun has been developing paints since 1926 and is now one of the world’s largest paint companies. Today, the group comprises of 67 companies and 40 production facilities across the world and employs more than 10.200 dedicated employees. Which type of paint you consider better, powder coating or PVDF? They are both good options, no question on that. For me, it is powder due to the following reasons. VOC contents are negligible for powder, while it is moderate to high for PVDF. You can achieve the required result with powder with a single coat, while you will need up to 3 to 4-coats for PVDF. Colour consistency is easier to control with powder, with PVDF is much harder to control. Easier process for the user. There are a much larger large number of approved applicators for powder coating. Guarantee comes at 25-30 years for all colours of powder, for PVDF is quite vague as it depends a lot on specifications. There is a richer finish on powder. What about anodization? Anodization used to be dominant in our industry but these days belong to the past as its share constantly declines. Main reason is the inconsistency of colour, it is very difficult to control. This is due to variance of metal constituents, temper, anodizing tank chemistry, shape geometry and material load size. As the world becomes more environmentally conscious, we are moving towards healthier practices. Anodizing has low friendliness, there are concentrated acid baths (vapour concerns) and waste disposal concerns. Further reasons that anodizing market shares continues to decline is the very limited colour and finish choices and the high resource consumption. What is the optimum paint thickness for powder coating?   We measure dry film thickness as per Qualicoat standards. In the final assessment, none of the measured values shall be less than 80% of the specified minimum value otherwise the thickness test as a whole will be considered unsatisfactory. The results shall be assessed as shown by four typical examples (minimum thickness for coatings of 60 μm): Example 1: Measured values in μm : 82, 68, 75, 93, 86 average: 81 Rating: This sample is satisfactory. Example 2: Measured values in μm : 75, 68, 63, 66, 56 average: 66 Rating: This sample is good because the average thickness is more than 60 μm and because no value measured is less than 48 μm (80% of 60 μm). Example 3: Measured values in μm : 57, 60, 59, 62, 53 average: 58 Rating: This sample is unsatisfactory and comes under the heading “rejected samples. Example 4: Measured values in μm : 85, 67, 71, 64, 44 average: 66 Rating: This sample is unsatisfactory although the average thickness is more than 60 μm. The inspection is unsatisfactory because the measured value of 44 μm is below the tolerance limit of 80% (48 μm). Across different markets and climates, the choices of material for windows varies. In Northern Europe PVC is dominant, while as we move to Mediterranean countries and Middle East, aluminium takes over.   There is no question, aluminium is a far better material than uPVC. I can sum up advantages as below. Much more durable. An aluminium window has lifecycle of more than 60 years while uPVC is approximately 25-40 years. Maintenance. Aluminium does not crack, peel or rot and there is ease to change a broken glass by removing the glazing beads. uPVC on the contrary is a very soft material that can easily get scratched while you have to exchange the whole vent frame if glass is glued in for stability. Aluminium has high stability due to great strength to weight ratio and high wind as well as burglary resistance. uPVC needs steel or aluminium reinforcement steel to reach the same stability in same sizes. There is great colour variety in aluminium through powder, liquid or anodizing. On the other hand, there are only limited shades of whites, greys and browns and not all uPVC is UV resistant which leads to colour fading. There is lot of discussion lately for fire safety and regulation. This debate is global since there are several incidents with fires in building. Does paint contribute to fire performance and how much? We need to be able to interpret the fire classification test results. The latest Dubai Civil Defense Regulation has adopted European Standard EN 13501-1. A typical classification comes as e.g. B – s1- do. Let’s see what this means. First digit is the reaction to fire classification which determines how much (if any) a building material contributes to the spread of fire. Class A1 – A2     = non-combustible materials. Class B, C, D        = ranges from very limited to medium contribution to fire. Class E, F             = high contribution to fire. The “s” part relates to the total smoke propagation, during the first 10 minutes of exposure. These determine a “smoke” index: s1 = little or no smoke. s2 = quite a lot of smoke s3 = substantial smoke. The “d” part relates to the flaming droplets and particles, during the first 10 minutes of exposure. d0 = none. d1 = some. d2 = quite a lot. According to EN 13501-1, Jotun Super Durable paint fall under A2-s1,d0 category, while Jotun Durasol is plain A1.

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Skyline Facades successfully partnership with Master Italy

We received today at our office a fabulous present from Master Italy. We sincerely thank our friends Albert Ryzhkou, Lorenzo Lafronza, Ayman A. Adeeb and Silvio Grassi for their splendid collaboration and we aim at an even closer partnership the year to come. #skylinefacades #masteritaly #partnership #aluminium #systems #design Read More

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Facade Engineer

Getting the most value from your facade engineer

It is the facade of a building that brings an architect’s vision to life, however a building’s skin not only contributes to architectural expression, it also plays a large role in the performance of the building as a whole. Role of Facade Engineer is discussed. Globally, clients are becoming more demanding concerning the solutions they want from their buildings and facades. They want better-performing, more aesthetically pleasing facades and these requirements have to be delivered quickly and cost effectively while Building Facade. Building Facade A façade is one of the key influences that determine the value, commercial success and project risk of a building, but it is also one of the most common sources of building failure. Few people realise how complex a façade system can be. In a typical 30 storey building, for example, there will be approximately 18,000 sq m of façade. This will consist of approximately 3,000 panels, with each panel having approximately 300 parts that are constructed from various materials. This example adds up to nearly a million parts for the façade alone, so it’s no wonder that things can go wrong if proper control isn’t in place. Some of the diverse conditions that a façade needs to accommodate include wind speeds that can go above 100 k/ph, temperature differences, and associated thermal expansion of up to 80°C, plus they must resist rain, humidity, mould and even seismic activity and lightning. Besides being designed for all of the above external conditions, a façade on a tall building also needs to be able to accommodate a structure that moves and deflects all of this while continuing to look good. In short, it is a complex machine and should not be trusted to inexperience.  Facade Engineering at Crowne Plaza Hotel Singapore Within the boundaries of the fees available, façade engineers need to be smart with the solutions they offer. It is the job of a façade engineer to find the technologies and systems to make the client requirements possible. As a very minimum, they must offer safe, buildable, durable solutions that fit into the client’s budget. Sometimes delivering optimum service means delivering difficult messages to the clients. As with any type of highly technical engineering solution, one gets what they pay for when it comes to façade design and installation. Importance Of Facade Engineering in Building Facade Facade engineers need to be brought in at the early stages of a project to understand what the client’s aspirations are and what they can afford, so that the engineers can assess different solutions and determine what performance requirements are needed for building facade. In this way, the project proceeds smoothly with all parties fully informed. A façade engineer’s obligations extend much further than delivering a technical service. An engineer must understand the entire development process and the fact that delaying a building project will have financial implications for a developer. The engineers therefore have an obligation to provide good technical advice and keep a project moving forward. Make sure that the façade engineer has appropriate experience, understands the project’s aspirations and understands how a project is developed. No developer will ever be thankful for achieving a small, non-critical technical win if the result is that the project is delivered late. Crown Plaza Hotel, Singapore  Crowne Plaza Hotel, Singapore Designed and built in only 17 months, Aurecon was engaged to advise on the design of the Crowne Plaza Hotel’s façade. The façade screen, set against the Changi Airport terminal buildings, was conceptualised as three-dimensional lace screens resembling orchid petals that could provide shade and texture for hotel rooms and public spaces. Designed to provide a sense of peace and tranquillity for travelers, and to meet shade requirements, the material selection was key to achieving this outcome. The lightweight screen concept required Aurecon to undertake accelerated testing of possible façade materials to verify weathering and compatibility with interfacing materials. Ultimately, a polymer modified glass fibre reinforced gypsum compound was used to create the petals, with screed elements sculpted from visual and CAD animations of scaled samples. The modular units of screen petals were factory assembled into full floor height partitions to allow for fast on-site installation. The resulting building ‘floats’ on a filigree floral cage that filters and softens the surroundings, providing 60 per cent shading for the building. Steve Daniels Technical Director, Façade Service Leader Steve Daniels, Aurecon’s Global Façade Leader, has an extensive track record in façade management and consulting. He has 30 years of international experience and has worked on some of the worlds’ great façades including the Petronas Towers in Malaysia, Swiss Re and City Hall in London & the Burj Khalifa in Dubai. Aurecon is an engineering, design, and advisory company. With an office network extending across 27 countries, Aurecon has been involved in projects in over 80 countries across Africa, Asia-Pacific and the Middle East. Steve Daniels discusses some of the things that need to be considered to get the best out of your façades engineer.

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Grenfell Tower

7 years after Grenfell: Jonathan Evans

Dr Jonathan Evans is the CEO for Ash & Lacy, a leading UK-based supplier of components and systems for the Architectural market. We discuss with Jonathan about the measures for UK Building market, after the Grenfell Tower tragedy, which costed the lives of 72 people in a several fire on 14th June 2017. Dr Jonathan, earlier this month, was the 7th sad anniversary of Grenfell Tower tragedy Indeed. There will be many heartfelt tributes and it was another very painful day for the survivors and bereaved who wait patiently for justice and truth. However, I’ve come to feel that it is actually more significant in terms of the need for change and professional responsibility because, seven years ago, was the last day we went about our lives oblivious to the mistakes that had been made many years before and the dangers that had been created. Neglections, misinterpretations and misjudgements, that horrifically ended the lives of 72 innocent people who put their trust in our industry, and endangered many others including those who bravely attended the fire. Many, many more will be burdened with mental and physical consequences for the rest of their lives. Unlike what we’re unhelpfully led to believe, the construction industry does not have a monopoly on unscrupulous behaviour and bad culture, but the next time you read or make a claim about fire performance or how ‘tolerable’ a risk may be, please remember the images in this video. Apart from the collective responsibility, there is also the personal one. Each one of us is a part of the Construction Industry after all and our own actions do matter. The night of the Grenfell Fire in 2017, I flew back from holiday and went straight to the office to look through our records. One by one I called the installers relating to any project where it looked like we might have supplied polyethylene-cored ACM on a tall building. All we usually had to go on was the quantity ordered or a panel schedule. I’ve never known people call me back so quickly. The last of the buildings we identified was reclad by the end of 2018. One was even reclad in the Summer of 2017. Ironically, they all missed out on government funding by acting so swiftly. One of my criticisms of the DCLG post-Grenfell process was that despite my encouragement, nobody wanted to ask the suppliers where all the buildings were. Instead, governments relied on building owners to send samples of their cladding to labs for testing. The further you go back, the poorer records will be, but with sufficient perseverance, you can get a fair idea where all these dangerous buildings are and those who know best are the people that fabricated and supplied the stuff in the first place. In the UK, after over 7 years, 430 out of 496 known ACM buildings over 18m have now been reclad but 16 still haven’t begun their remediation. (There are thousands of blocks between 11-18m considered unsafe that haven’t begun remediation.) The EU needs a structured plan to urgently rectify such buildings too (and lower) but apparently hasn’t even begun looking for them. Competency and knowledge is useless without the leadership and conviction to do something with it. It cannot be a UK issue, right? There should be buildings with flammable materials all over Europe. Definitely. In January 2024 for example, a fire destroyed a warehouse in St. Petersburg belonging to Wildberries, Russia’s largest online retailer. Fire spread to an area of 50,000 square meters (about 538,200 sqft). https://lnkd.in/e2uHRJn9 There have been numerous high profile fires like this in warehouses such as Ocado, Amazon etc but the first image below struck me as relevant to the interpretation of our Building Regulations. After the car park fire at Luton airport and numerous school fires, there are renewed calls for mandatory sprinklers in such buildings here. The arguments to change BB100 etc are often focused on avoidable serious disruption to our children’s education etc. and consequences such as business interruption, property loss etc are often cited as things we need to regulate against. However, and I’ll repeat that no matter how convincing, these arguments are defeated by Regulation 8 in Part 2 of the Building Regulations. More specifically, it is how this Regulation is interpreted that’s the problem. Whether it’s in business, personal life or an incident inquiry, if you can’t find the root cause of a problem it will more than likely reoccur. Dame Judith Hackitt has reviewed the regulatory ‘system’, not the Regulations themselves. To be fair, that’s precisely what she was asked to do in true civil service style – “Always dispose of the difficulty in the title. It does less harm there than in the text” (Sir Humphrey Appleby, “Open Government”). I’m usually told that this primary legislation is beyond challenge – too difficult. Not the kind of thing an entrepreneur usually accepts, but pragmatically, maybe changing the way the regulatory intent is ‘interpreted’ in the light of new events and knowledge is more achievable. When you look at this aerial image and the thick black cloud of smoke, would you say that the ‘health and safety’ of the people ‘in the vicinity’ of it was/could have been affected? Or what about the firefighters that attended? Look at the cancer rates of those who attended 9/11. Other factors that could be taken into consideration are mental health impacts, trauma and the wider environmental damage. We can’t control the contents of buildings like we can the structure, so does Regulation 8 oblige designers to consider the impact of those nearby and the dangers to firefighters both immediate and long-term? Maybe it will take a ruling following a claim from fire brigade unions or local residents. ‘Just getting the occupants out alive’ in my opinion is not a sufficient threshold We all need to be singing from the same hymn sheet to drive change and protect our environment, schools, public buildings, workplaces etc. from contamination, disruption

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