Traditional roof systems involve multiple layers of products to form an insulated roof build-up. Whereas insulated panels can be laid in one process, combining insulation and roofing into one product, improving the speed of construction and thermal performance.
Iconic Cladding has experience installing insulated roofs with Kingspan, Conquer and other panel manufacturers. They are generally called Structurally Insulated Panels (SIPs) and consist of an PIR (polyisocyanurate) core with a flat or shallow profiled metal skin to the underside and a trapezoidal skin to the upper side. Insulated panels require careful attention to detail around the eaves and ridges and any penetrations to maintain airtightness. PIR Insulated panels generally have the best thermal performance relative to thickness, compared to built up layered systems, so can meet the new NZBC H1 with less complexity.
We also install flat sandwich PIR panels as a carrier tray for other products to be laid over, such as membrane or profiled metal roofing.
There are a range of insulated panels on the market with a number of insulation cores, some have Factory Mutual (FM) fire testing. FM ratings are required by some insurance companies, depending upon the building type, do your homework.