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BUILDING FABRIC & EXTERIORS STEP 5: INSTALLATION


As there will be no visible roofing batten during the installation, use a chalk line to highlight the batten position to aid nailing/stapling in the correct position. Ensure the broken bond pattern is maintained throughout the roof and a 5 mm gap is left between each shingle.


STEP 6: RIDGES


When you reach the ridgeline, you will need to cut the shingles to maintain the 125 mm gauge – the shingles can be cut with a handsaw or by using a Stanley blade to score them. A double ridge course is required at the start of both verges and these should be fixed with a 45 mm x 2.65 mm nail, due to the thickness of shingles underneath.


STEP 7: FINISHING TOUCHES


and a broken bond pattern should be maintained.


STEP 4: FIXING


Shingles should be twice nailed or stapled. You can use a 31 mm x 1.8 mm silicon bronze nail or stainless steel ring


shank nail, but it can be a much quicker method to use a product-specific staple with a Paslode gun. Fixings should be positioned 19 mm in from the edge of the shingle to avoid splitting and 38 mm up from the butt of the course above.


Use the same gauge as the shingles at the ridge to give a more uniform appearance. This means ridges may need to be cut when they meet at the central point. A site formed decorative finishing piece can be installed in the centre of the ridge where the shingles meet.


Daniel Redfern is marketing campaign manager – residential roofing at Marley Eternit


26 www.sbhonline.co.uk


november/december 2018


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