Portico Roof

During renovations of St Andrews Church on the Terrace in the Spring of 2008 we installed a rare 3 layer torchon roofing system to the Portico Entry roof. Previously it had Mastic Asphalt on the concrete structure which had bubbled and blown all over.
We melted and removed the asphalt bubbles and the main contractor had the plastering contractor screed over the old asphalt with a 20mm thick polymer modified plaster.
The plaster was allowed to cure then we primed it with Nurabond No10 adhesive and torched down Nuraply3PV vent sheet to the flat area and Nuraply 3P Basesheet to the sloping parts.
Both areas were then followed by a layer of 3P Sanded 3mm and a final third layer of Nuraply 3PM 4mm thick Mineral finish.
The job was finished off with Coloursteel wall flashings around the perimeter fitted into a polyurethane sealant filled saw cut in the plaster. After we left the job the plasterers applied a final coloured coat of plaster onto the walls down to our metal flashing.
Here are some photos of the work. Clicking on the thumbnail photos will open a larger version in another tab ( or window in IE)

bit of a messbit of a mess new screed downnew screed down No 10 Adhesive appliedNo 10 Adhesive applied
3PV vent sheet going down3PV vent sheet going down 3PB baseheet is down, starting on the 3P3PB baseheet is down, starting on the 3P 3P 2nd layer over whole roof3P 2nd layer over whole roof
rain overnightrain overnight tricky corner detail has to be laid firsttricky corner detail has to be laid first working the mineral up from the lowest pointworking the mineral up from the lowest point
foam cushion stops sliding and protects from markingfoam cushion stops sliding and protects from marking that corner detail finishedthat corner detail finished looking down on the finished minerallooking down on the finished mineral, upstands to do yet
view of sloped sectionview of sloped section with the upstands done view down slope to flat endview down slope to flat end metal flashings for wallsmetal flashings for walls
an old piece of rubber for a dropsheetan old piece of rubber for a dropsheet piece of wall flashing inpiece of wall flashing in
wall flashings completedwall flashings completed opposite sideopposite side the walls are plastered and the scaffolding gonethe walls are plastered and the scaffolding gone
north side of the roofnorth side of the roof south side of the roofsouth side of the roof

© all images remain the property of scie construction ltd

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