September 2019

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An Inspector Calls THE VERY SERIOUS CONSEQUENCES OF DELAMINATION: CHOOSE WISELY In our regular monthly column – ‘An Inspector Calls’ – Total Contractor has teamed up with the experts at BMI UK & Ireland, leaders in pitched and flat roofing solutions, to help you achieve roofing success and avoid the common pitfalls that can often cost you both time and money. This month the Inspector lifts the lid on clay tile delamination and its consequences. The quality of raw materials and the manufacturing process largely determine how prone clay roof tiles are to the defects of surface spalling and delamination – the bane of clay roof tiles. Lamination is where you have weakly connected layers of material within the body of the clay. When those tile layers begin to separate, you have delamination. It is found in all clay products but is more prevalent in poorly mixed and/ or sourced raw materials. Avoiding delamination is a solid argument for choosing both high quality clay and manufacturing credentials when selecting a clay plain tile for the roof. After all, a clay plain tile roof – at 60 tiles per m², laid at a broken bond and double lap – is the one of the most expensive and complex systems a customer may choose for a roof. Why then skimp on the materials? Below: delamination Don’t be the ‘spall guy’ by removing moss from the tile surface as the consequences can be catastrophic for the roof. 34 TC SEPTEMBER <strong>2019</strong>
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September 2019

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