The nu-lok roofing system installation requirements

Responsibility – Prime Contractor

Other TRADES FINISHED their WORK – carpenters, electricians, bricklayers & other trades should have finished their work. The tile fixer cannot be responsible for damages caused by other trades traversing the roof.
WIRING – to the roof space must be completed.
SCAFFOLD & SAFETY RAILS – must be erected to relevant local building regulations and as close to the gutter height as possible.
BARGE BOARDS – need to be set 20mm. above rafter unless otherwise specified.
ADDITIONAL TIMBER WORK – certain situations will require additional timber work (dummy rafters / lay boards / valley boards) - these must be in place before fixer commences.
ROOF PITCH – minimum of 22.5 degrees
POWER – available on site
BRICKWORK – including chimney, must be complete.
FASCIA – must be correct height for Nu-Lok System.
ROOF – must be true and straight.
WIRING – to the roof space must be completed.
VALLEY – boards must be 100mm wider than width either side and set flush to rafter height. Valley width and detail may need to be adjusted and varied depending on the length of run and the roof water collection area.
CEILINGS – exposed beam areas need to be installed.
RUBBISH – provide skips for rubbish collection.
Fibreglass Blanket or Anticon Wool Insulation – cannot be used with this system other than with a counter batten arrangement.

Responsibility – Distributor / Tile Fixer

Specifications, fixing methods and Local Building Codes – it is the responsibility of the Distributor / Fixer to be thoroughly acquainted and conversant with all specifications and methods prescribed on this web site. Any deviation from the methodology herein shall be the responsibility of the Distributor / Fixer in all case excepting where prior approval has been granted by Nu-Lok Roofing Systems. It is the responsibility of the Distributor / Fixer to be aware of all Federal / State / Local government regulations that are applicable to the project in question and seek approval from Nu-Lok Roofing Systems to vary methods & specifications (described herein) to meet these regulations & codes if required.
ADDITIONAL TIMBER WORK – must ensure that Architect / Builder is aware from the outset of any additional timberwork (dummy rafters, lay boards, valley boards) and how and where to fix them.
SET OUT – the roof.
SARKING – fix
BATTENS – fix
FIX SHINGLES & ACCESSORIES – valley irons, secret gutters, flashings.
CUT SHINGLES – where required.
FIX HIP & RIDGE FLASHING
DOWNPIPE GUTTER SPREADERS – when tipping into lower roofing areas additional flashing may be required to avoid overloading.
OPEN VALLEYS in SNOW AREAS – these should taper by approx. 1"(25 mm) in each 8 ft. (2.5 metres) this applies to both the the metal and the shingle gap. Smaller lengths of flashing can be used to simulate this effect. The wider gap at the bottom takes an increased water flow and the ice will slide downwards as it melts.
ANGLE GRINDER – do not use and angle grinder where the sparks can land on coated metal. Burn through of the paint coating can occur and corrosion can result.
DO NOT CUT TILES ON THE ROOF WITH A DIAMOND OR SIMILAR SAW – the dust from this will into the shingle surface and set like cement.
DISSIMILAR METALS – avoid contact of dissimilar metals that can lead to corrosion.
STANDARDS & CODES – ensure that all activity & construction methods conforms to the local relevant Standards and Codes.
CLEAN – roof surface & gutters.
WASTE – collect together in heaps or place in skip if provided by prime contractor.

Responsibility – The Owner / Designer

TREES – most of us are keen to preserve trees and propagate more. However the owner must be conscious of the issue that trees can in some cases cause considerable problems with the roof and gutters. Leaves and pine needles can block valleys and other means of draining water from the roof area, before you even come to the issue of snow. To avoid problems work these issues through with your contractor to minimise problems. Special consideration to the roof valleys - size, depth & type, may be helpful in minimising problems.
SNOW GUARDS – in locations where the snowfall is sufficient to accumulate masses of snow and ice which are liable to slide from the roof, snow guards (or equivalent options) should be used. They will need to be placed above doorways, porches, sidewalks, playgrounds, and other places where people are liable to pass or gather. These snow guards need to be corrosion resistant for long life so as to prevent staining on the shingle surface. It is up to you to specify these to your contractors where appropriate.