Include cross references to other sections where these contain related work, such as:

Refer to 4161DP for DUPONT TYVEK UNDERLAY SYSTEM for vented roofing underlay.

Refer to 4241TS STEELFORMERS PROFILED METAL CLADDING for cladding.

Refer to 4312 PROFILED PLASTIC ROOFING for natural lighting sheeting.

Refer to 4337 PLYWOOD ROOFING & DECKING SUBSTRATE for roofing substrate.

Refer to 7411 RAINWATER SPOUTING SYSTEMS for rainwater disposal.

Delete from the DOCUMENTS clause any document not cited.  List any additional cited documents.

The following are related documents and if referred to in the work section need to be added to the list of DOCUMENTS.

BRANZ Good Practice Guide: Long-run Metal Roofing

Note: AS/NZS 1170.2:2011 is cited in NZBC B1/VM1 Structure at the time of writing.  The new version AS/NZS 1170.2:2021 is not yet cited.  Amend the section by removing the year reference if using the 2021 version and amend the section accordingly.

It is important to ensure that all personnel on site have access to accurate, up to date information on the many products, materials and equipment used on a project.  In most cases individual products are not used in isolation, but form part of a building process.  Also a particular manufacturer and/or supplier requirements for handling, storage, preparation, installation, finishing and protection of their product can vary from what might be considered the norm.  Access to information can help overcome this potential problem.

Refer to SELECTIONS for a guide to typical warranty details for different systems. They are a guide only, as project details may vary the warranty periods, check with Taranaki Steelformers to confirm warranties and recommended systems.

Refer to SELECTIONS guidance notes for warranty period for environmental categories or refer to COLORSTEEL® Environmental Categories & Warranty Guide.The warranty periods are a guide only and should always be confirmed with the manufacturer.  For project specific Warranty requirements contact Taranaki Steelformers.

Unfinished galvanized steel is not recommended and should only be considered in non-critical buildings in Cat 1 exposure zones and has no warranty.  Zincalume, Type AZ (Aluminium/Zinc) coated steel (non-painted) has perforation warranty only.

Modify or expand the clause to suit project or installer/applicator requirements, options include:

• Modify the form to be used
• Commence the warranty from the date of installation (check with the installer/applicator)

Delete clause if Dridex® not specified.

The next two mutually exclusive clauses, are setting a standard of performance for design by the contractor to meet.  Specifiers should therefore consider adding some means of confirming (say by testing or certification) that the performance criteria will be or have been met.  Delete the clause which does not apply.

Note; periphery areas, of any roof plane, generally have more fixings and reduced purlin spacings (non-NZS 3604 specific design), compared to the centre of the roof.

Examples of design parameters include Wind Zone and NZS 3604.

Delete the clause if using DESIGN PARAMETERS - SPECIFIC DESIGN.

Refer to Taranaki Steelformers for "Wind Load Span Design Charts" for load parameters.

Obtain information from the project structural engineer.

Note:

• For some situations Positive and Negative pressures will need to be stated.
• Also for some situations Face and Edge Zone pressures will need to be stated.
• Pressures may need to be expressed on a floor by floor basis.
• For large or complex projects specifically marked up elevations may need to be referred to.

Delete the clause if using DESIGN PARAMETERS - NON SPECIFIC DESIGN.

Refer to later EXECUTION clause on co-operating with others on the installation of elements which penetrate or adjoin the roofing system; including walls and parapets, skylights, sundry elements fixed through the roofing surface, service pipework, etc.

Refer to SELECTIONS for coating options - Zincalume®.

Refer to SELECTIONS for coating options - COLORSTEEL® Maxam™.
If ColorCote® MagnaFlow™ or MagnaFlow™ PLUS  are required, contact Taranaki Steelformers for further information.  Will be subject to lead times and minimum order quantities.

Refer to SELECTIONS for coating options - COLORSTEEL® Altimate®.

If ColorCote® AlumiGard™ or AlumiGard™ PLUS, are required, contact Taranaki Steelformers for further information.  Will be subject to lead times and minimum order quantities.

Refer to SELECTIONS for coating options such as COLORSTEEL® Maxam™ Dridex®  and COLORSTEEL® Altimate® Dridex®.

Refer to CodeMark CM70050 Rev 1 COLOURSTEEL® Endura™ Dridex® and COLOURSTEEL® Maxx™ Dridex®.  This CodeMark is currently being updated to include COLORSTEEL® Maxam™ Dridex®  and COLORSTEEL® Altimate® Dridex® but is not currently available.  Contact Colorsteel NZ for further information.

The use of COLORSTEEL® Dridex® may alleviate the need for underlays, contact Roofing Industries for further information.

Copper is only available upon request.  Contact contact Taranaki Steelformers for further information.  Will be subject to lead times and minimum order quantities.

Modify to suit project requirements.  Also available in curved radii.

Copper grades 122, 110, and 102 are available. Grade 122 is most commonly used in construction.

Note - common sheet size is 2400mm x 1000mm for flashings and rainwater goods.  For roofs, a 600mm wide coil for roll-formed goods.

Products include Alsynite Topglass, Topglass GC, Topglass GC SPF, Topglass GC Ultra-Safe, Topglass Cool, Topglass FR, and Ampelite Corri-Glas, WonderGlas GCP, Perma-Glas STD, Perma-Glas XL, Perma-Glas Ultra, Wonder-Glas S-996, Cool-lite IR.

Delete section reference as required, if included within this section.

Contact Taranaki Steelformers for profile options for various Alsynite and Ampelite products.  If only a small amount of plastic cladding is required, can add to SELECTION tables for relevant profiles instead of referring to 4242 PROFILED PLASTIC CLADDING.  Confirm required fixings with Taranaki Steelformers.

Polycarbonate products include Alsynite Laserlite 2000 or Ampelite Solasafe, SS40 Polycarbonate.PVC products include Ampelite Suncall (frosted), Sunclear (clear).

Delete section reference as required, if included within this section.

Contact Taranaki Steelformers for profile options for various Alsynite and Ampelite products.  If only a small amount of plastic cladding is required, can add to SELECTION tables for relevant profiles instead of referring to 4242 PROFILED PLASTIC CLADDING.  Confirm required fixings with Taranaki Steelformers.

Correct fastener selection to be made in consultation with Taranaki Steelformers. NZMRM CoP provides some information on selection, fixing methods and placement of fasteners. Ensure fasteners durability is at least equal to durability of roofing material.

For thermal movement refer to Taranaki Steelformers Profile Factsheet for the selected profile.

Prepare a separate clause specifying profiled washers and oversized holes as required by the roofing manufacturer and consider detailing a step in the roofing (check details with the roofing manufacturer).

Do not use stainless steel or monel (nickel-copper alloy) fasteners on ColorCote MagnaFlow and MagnaFlow X products.

Delete this clause when clip fixings are not required.  Clip fixings are required for Quattro 45mm Snapseam, Quattro 25mm Double Standing Seam, 25mm Nailstrip Snaplock and 25mm Snapseam cladding profiles.

Size depends on profile and project restraints.  Check the roofing manufacturer requirements.

For thermal movement refer to manufacturers Factsheet for the selected profile. All plastic sheeting must have an enlarged fixing hole for provision of thermal movement, predrilled to specific diameters for 12# or 14# self drilling screws for both timber and steel purlins. See Selections.

Prepare a separate clause specifying load-spreadng profiled washers and oversized holes as required by the roofing manufacturer and NZMRM CoP.

Delete this clause when plywood substrate not required.  Plywood substrate is required for Quattro 45mm SnapSeam (Very High Wind Zone & over), Quattro 25mm Double Standing Seam and Quattro 25mm Snapseam cladding profiles.
CD - Construction ply, plugged and sanded on the upper face.

Avoid steel framing contact with H3.2 treated plywood, use vent mat to achieve ventilation requirements and to isolate contact.

Modify above clause with appropriate section reference if plywood substrate is specified elsewhere.

Revise the clause wording to suit the specified roofing.

NZBC E2/AS1 does allow aluminium flashings of 0.7mm, this is only recommended for small flashings.

For flashings and capping use low tensile grade G 300 steel.  If specifying aluminium/zinc-coated sheet use only compatible materials for soft edgings - soft pure aluminium 0.45mm thick, or Flashguard.

Refer to E2/AS1, table 17 for maximum penetration size and catchment area above penetration.

PVC coated netting is recommended for Zone D and E exposure and other corrosive environments. Wire netting is normally only used in areas where there is a low risk of falling. It is required for pitches under 8° and some wide purlin spacings, to support underlay. Safety mesh is used in high studs and open spans, such as commercial, industrial and warehouse buildings, and particularly under plastic roofing.

Do not use galvanized wire netting as an underlay support with aluminium roofing.

Dupont DuPont™ Tyvek® Metal or similar Steelformers approved product must be used with Quattro 45mm Snapseam profile in Very High Wind Zone & over or at Low/Medium/High Wind Zones if required.  Also recommended for other Quattro roofing profiles.

Do not rely on sealants alone for joining. Mechanical fasteners (e.g.: rivets, self-tapping screws etc) to always be used as well.

Sometimes used where overlaps with flashings etc, are compromised, such as when sheet ends cannot be turned up.  Often used with plastic roofing.  Care should be taken not to block, required ventilation and moisture run off from the underlay.

Use this standard generic clause and if appropriate add additional special requirements.

Use this standard generic clause and if appropriate add additional special requirements.

Transverse flashing can be prone to buckling if there is excessive timber moisture movement.

Refer to NZBC E2/AS1, Table 21 Compatibility of materials in contact, for materials to avoid contact with or allow water run-off onto galvanized steel and zinc-aluminium-magnesium combinations,  coated and uncoated.  Refer to Interactive Material Compatibility calculator available in NZMRM COP section 4.9.4.

The following execution clauses are written specifically to suit profiled aluminium/zinc/magnesium (combinations) coated steel.  If using aluminium they will need re-evaluating. Aluminium roofing, even with an underlay separation, cannot be in direct contact with copper treated timber, black butyl rubber or steel purlins. Refer to NZMRM CoP.

Delete this clause when plywood substrate not required.  Plywood substrate is required for Quattro 45mm SnapSeam (Very High Wind Zone & over), Quattro 25mm Double Standing Seam and Quattro 25mm Snapseam cladding profiles.

Modify above clause with appropriate section reference if plywood substrate is specified elsewhere.

Delete this clause when plywood substrate not required.  Plywood substrate is required for Quattro 45mm Snapseam (Very High Wind Zone & over), Quattro 25mm Double Standing Seam  and Quattro 25mm Snapseam cladding profiles.

Dupont DuPont™ Tyvek® Metal or similar Steelformers approved product must be used with Quattro 45mm Snapseam profile in Very High Wind Zone & over or at Low/Medium/High Wind Zones if required.  Also recommended for other Quattro roofing profiles.

Note: Translucent sheeting requires special design and spacing of support members - see Taranaki Steelformers website for technical details including spanning, thermal expansion and fixing.

Heat treating is required to prevent absorption of the rainwater onto the underside of the sheet by capillary action.
Delete this clause if not using COLORSTEEL® Dridex®.

Use this standard generic clause and if appropriate add additional special requirements.

Revise the clause wording to suit the specified roofing.

Galvsteel® is not advised for any new roofing project. Contact Taranaki Steelformers Technical Manager to discuss your project and determine whether Galvsteel® is suitable for your application.

FIXINGS FOR STEEL NC 710 ROOFING

FIXINGS FOR ALUMINIUM NC 710 ROOFING - PREFINISHED OR PLAIN

Refer to NZMRM CoP and consult with Taranaki Steelformers fastening supplier for further details.

Do not use galvanized or zinc coated screws (e.g. Class 3 or 4)

FIXINGS FOR STEEL DB7 ROOFING

Note:

FIXINGS FOR ALUMINIUM DB7 ROOFING

Refer to NZMRM CoP and consult with Taranaki Steelformers fastening supplier for further details.

Do not use galvanized or zinc coated screws (e.g. Class 3 or 4).

FIXINGS FOR STEEL RIBLINE ROOFING

FIXINGS FOR ALUMINIUM RIBLINE ROOFING

Refer to NZMRM CoP and consult with Taranaki Steelformers fastening supplier for further details.

Do not use galvanized or zinc coated screws (e.g. Class 3 or 4)

FIXINGS FOR STEEL STYLELINE ROOFING

FIXINGS FOR ALUMINIUM STYLELINE ROOFING

Refer to NZMRM CoP and consult with Taranaki Steelformers fastening supplier for further details.

Do not use galvanized or zinc coated screws (e.g. Class 3 or 4)

FIXINGS FOR STEEL CORRUGATE ROOFING

FIXINGS FOR ALUMINIUM CORRUGATE ROOFING

Refer to NZMRM CoP and consult with Taranaki Steelformers fastening supplier for further details.

Do not use galvanized or zinc coated screws (e.g. Class 3 or 4)

FIXINGS FOR STEEL TROUGH CLADDING

FIXINGS FOR STEEL TROUGH CLADDING

Options:

FIXINGS FOR STEEL TROUGH CLADDING

Options:

Modify colour and coating if necessary. Delete if specified elsewhere in documentation e.g. drawings. Available in lengths up to 8 metres.