042 RCI 0517

RCI May 2017

CLADDING & SHEETING PROJECT FOCUS The problem explained: The quality of coatings on metal profile sheets has improved significantly in recent years. Nevertheless, the problems of delamination and deterioration of the coating are an ever-present risk to the integrity of roof structure and performance. Furthermore, the cut edge and overlapped joint remains especially vulnerable due to the effects of capillary action drawing sulphur contaminated rainwater into the joint causing the double hazard of ‘topside and ‘reverse side’ corrosion. The rate of breakdown of coatings is determined by location, orientation and design. Research has shown that the dominant factor for PVC type coatings is UV radiation and for thin Pvf² / polyester coatings, the corrosion of the zinc substrate through the permeability of the coating. The result is an unsightly roof, scarred with lines of corrosion along the joints and random rust stains across the entire surface. The Solution: The first stage in reaching the solution to any problem is to fully understand the degree of degradation, which has occurred. Delvemade recommends that a full and comprehensive site survey is undertaken by Giromax Technology, followed by a detailed situation report. At this stage a restoration proposal is submitted highlighting the remedial action to be undertaken. www.delvemade.com Above: The vast roof of the Spade Lane Distribution Centre in Sittinbourne; Left: Delvemade Seamsil sealant application; Right: Untreated and treated sections of the Spade Lane Distribution Centre roof 30 years of experience • 17 production sites • +1000 colleagues • 300.000 ton steel / year INSULATED PANELS SINGLE SKIN BUILD-UP SYSTEMS STRUCTURAL ROOF Joris Ide Ltd. • A9, Elmbridge Court • Cheltenham Rd E, Innsworth • Gloucester GL3 1JZ • United Kingdom www.joriside.com • ROOF & WALL • LPCB- PIR • MINERAL WOOL • AGRICULTURAL • INDUSTRIAL • COMMERCIAL • TRAPEZOIDAL • SINUSOIDAL • MULTIPLE FINISHES • LINER • FLASHINGS • RAINSCREEN CLADDING • FABRICATED CORNERS • TOP HATS & PANEL BEARERS • DECKING & TRAYS • LONG SPAN CAPACITY • PERFORATED FOR ACOUSTICS • Z, Σ & C - PURLINS • KIT BUILDINGS SHINGS MINERAL experience


RCI May 2017
To see the actual publication please follow the link above