If you have pre-customised this work section using the "questions and answers" provided as part of the downloading process, it may be necessary to amend some clauses to suit the final project-specific version.
The section must still be checked and customised to suit the project being specified, by removing any other irrelevant details and adding project-specific details and selections.
This section relates to Marley rainwater disposal systems.
It includes;
Modify / expand this clause to suit requirements of this specification section.
The word 'spouting' is used here to describe any roof guttering which is bracketed off the roof edge or fascia, as against an internal 'gutter', which may or may not be formed as an integral part of the roof cladding.
Some specifiers prefer to group general rainwater plumbing work - such as flashings to roof penetrations, windows, etc - together with the supply and installation of spouting and downpipes. While this can be a convenient arrangement, especially on smaller projects, there are dangers in such an approach, in potentially affecting guarantees or manufacturer's warrantees on roofing and/or window work. In terms of co-ordination, such flashing and sealing work is also best grouped with the primary enclosure element concerned.
Note: This section (without Q&A) is written to allow the use of either NZBC E1/AS1 or NZBC E1/AS2. NZBC E1/AS2 allows the use of AS/NZS 3500.3: 2018 (modified) as an Acceptable Solution.
Compliance with NZBC E1 may be achieved by following either Acceptable Solution. Note however that the NZMRM CoP offers a range of calculation methods for sizing roof drainage in greater detail and with more design parameters than are included in the Building Code. If these are followed then an Alternative Solution will be required.
Refer to ~ for ~
Include cross references only to other work sections where they include directly related work.
Refer to roofing sections for roofing. Add appropriate section above.
Refer to the general section 1233 REFERENCED DOCUMENTS. The following documents are specifically referred to in this section:
NZBC E1/AS1 | Surface water |
NZBC E2/AS1 | External moisture |
AS/NZS 3500.3: 2018 | Plumbing and Drainage - Stormwater drainage |
AS/NZS 4020:2005 | Testing of products for use in contact with drinking water |
AS/NZS 4020:2005 is cited by NZBC, but AS/NZS 4020:2018 has not at the time of writing been cited by NZBC. This section uses the 2005 version as an Acceptable Solution; consult with the BCA as to their requirements if you want to use the 2018 version as an Alternative Solution.
This section uses AS/NZS 3500.3: 2018 despite being superseded by AS/NZS 3500.3: 2021. Because AS/NZS 3500.3: 2018 is cited in NZBC G13/AS2. At the time of writing, AS/NZS 3500.3: 2021 is not cited and is therefore an Alternative Solution.
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 BU 509 | Sizing gutters and downpipes |
NZ Metal Roof and Wall Cladding Code of Practice |
Marley is an ISO registered manufacturer - ISO14001 & ISO9001
Manufacturer's and supplier's documents relating to this part of the work:
Marley Rainwater Sales Brochures
Marley Product Catalogue
Marley - Spouting and Downpipe DIY Installation Guide
Marley Stratus Design Series® Sales brochure
Marley Stratus Design Series® - Design and installation guide
Manufacturer/supplier contact details
Company: | Marley New Zealand Limited |
Web: | |
Email: | info@marley.co.nz |
Telephone: | 0800 MARLEY (0800 627 539) |
It is important to ensure that all personnel on site have access to accurate, up to date technical 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's and/or supplier's requirements for handling, storage, preparation, installation, finishing and protection of their product can vary from what might be considered the norm. Access to technical information can help overcome this potential problem.
Provide a material manufacturer/supplier Guarantee:
15 years: | Against defects in material and manufacture |
Refer to the general section 1237 WARRANTIES for additional requirements.
Provide an installer/applicator warranty:
~ years: | For installation |
Refer to the general section 1237 WARRANTIES for additional requirements.
Installers to be experienced, competent workers familiar with the materials and techniques specified.
Substitutions are not permitted to any of the specified Marley systems, components and associated products listed in this section.
Test the completed Marley rainwater disposal system with water to ensure, spouting is laid to correct fall, that both spouting and downpipes are unobstructed and that no ponding occurs in spouting.
Layout, falls and capacity of spouting to falls and the size and position of downpipes to comply with NZBC E1/AS1.
Compliance with NZBC E1 may be achieved by following either Acceptable Solution. Note however that the NZMRM CoP offers a range of calculation methods for sizing roof drainage in greater detail and with more design parameters than are included in the Building Code. If these are followed then an Alternative Solution will be required.
Use this clause if designing to NZBC E1/AS1, and delete clause 1.10.
Modify this clause to suit design.
Layout, falls and capacity of spouting to falls and the size and position of downpipes to comply with AS/NZS 3500.3: 2018 as modified by NZBC E1/AS2.
Compliance with NZBC E1 may be achieved by following either Acceptable Solution. Note however that the NZMRM CoP offers a range of calculation methods for sizing roof drainage in greater detail and with more design parameters than are included in the Building Code. If these are followed then an Alternative Solution will be required.
Use this clause if designing to AS/NZS 3500.3: 2018 as modified by NZBC E1/AS2, and delete clause 1.9.
Modify this clause to suit design.
All Marley spouting and downpipe systems are tested for the collection of rainwater and drinking purposes to AS/NZS 4020. Care should be taken to ensure water is not contaminated by other sources.
Marley uPVC spouting and downpipe systems in white and grey uPVC.
Available in various spouting profile designs; Classic, Stormcloud®, FL2®, Typhoon®, Magnum®. Available in various downpipe profile designs and sizes; RP65®, RP80®, Rectangular, Magnum.
Marley Stratus Design Series® spouting and downpipe systems in co-extruded colour outer layer with grey uPVC internal layer.
Available in three standard colours - Grey Friars, Ironsand, Black and two metallic colours -Titanium or Copper. Available in Marley Stormcloud® quarter round spouting system (Ironsand, Grey Friars and Black only), Marley Typhoon® half round spouting system and the Marley RP80® 80mm round downpipe system.
Marley spouting system, complete with Marley fittings including jointers, brackets, expansion outlets, end caps and corners supplied by Marley. Spouting to be sized to comply with NZBC E1/AS1 and installed to NZBC E2/AS1 8.1.6, Gutters. Refer to SELECTIONS for type.
Compliance with NZBC E1 may be achieved by following either Acceptable Solution. Note however that the NZMRM CoP offers a range of calculation methods for sizing roof drainage in greater detail and with more design parameters than are included in the Building Code. If these are followed then an Alternative Solution will be required.
Use this clause if designing to NZBC E1/AS1, and delete clause 2.4.
Modify this clause to suit design.
Marley spouting system, complete with Marley fittings including jointers, brackets, expansion outlets, end caps and corners supplied by Marley. Spouting to be sized to comply with NZBC E1/AS1 and installed to NZBC E2/AS1 8.1.6, Gutters. Refer to SELECTIONS for type.
Compliance with NZBC E1 may be achieved by following either Acceptable Solution. Note however that the NZMRM CoP offers a range of calculation methods for sizing roof drainage in greater detail and with more design parameters than are included in the Building Code. If these are followed then an Alternative Solution will be required.
Use this clause if designing to AS/NZS 3500.3: 2018 as modified by NZBC E1/AS2, and delete clause 2.3.
Modify this clause to suit design.
Marley downpipe system, complete with Marley fittings including bends, clips, joiners and junctions supplied by Marley. Refer to SELECTIONS for type.
Only Marley MCS® Solvent Welding Cement to be used in conjunction with the spouting and downpipe systems to manufacturer's instructions. Colour match to spouting or downpipes.
Available in White, Ironsand, Grey Friars, Black, Titanium and Copper.
Marley expansion outlet/droppers, compatible with spouting and downpipe profile.
Stainless steel, grade 304 finish, self tapping screws 6g x 20mm pan head or wafer head.
Marley galvanised nails (MCNAILS).
Self drilling tek screws 6g pan head or wafer head.
Special items can be fabricated by Marley to specific dimensions on request including but not limited to angle flats, angle rakes, outlets and adaptors.
Handle and store Marley downpipes, spouting and accessories to avoid damage. Store on site under cover, on a clean level area, stacked to eliminate movement and away from work in progress. Store out of direct sunlight. Refer to Marley installation guides for further details.
Check that fascias, barges or cladding are level and true to line and face and will allow work of the required standard without distortion to the product alignment. Do not proceed until they are up to standard.
Make adequate provision in the jointing of the spouting for thermal movement in the length of the spouting by using Marley expansion joiners and/or expansion outlets. Refer to Marley expansion technical information.
Marley Spouting and Downpipe systems are suitable for most environmental conditions and will never rust, rot or corrode.
ESD Note: Marley spouting and downpipe systems are manufactured using Best Environmental Practice (BEP) and can achieve positive credits under the NZ Green building Council's Green Star rating system for commercial buildings. Refer to www.marley.co.nz/about-us/environment/bep/ for further information.
All Marley manufactured spouting and downpipe systems are 100% recyclable and Marley operates recycling programs with industry suppliers where uPVC pipes can be returned from site for recycling at Marley.
Marley spouting is designed as a modular system.
Install to Marley's current published installation instructions available at www.marley.co.nz. Ensure only Marley MCS® Solvent Welding Cement to be used in conjunction with the spouting systems to manufacturer's instructions. From high points fix brackets true-to-line to give a fall of 5mm every 10 metres to outlets. Set spouting brackets at 500mm centres; reduce to 300mm spacing for high wind zones or areas subject to occasional snowfalls. Make adequate provision for thermal movement.
Install to Marley's current published installation instructions available at www.marley.co.nz. Ensure that all joints are sealed properly using Marley MCS® Solvent Welding Cement. Assemble downpipes, solvent cement jointed complete, fit to outlets, fix with pipe clips every 1.2 metres, fix pipe clips with 304 stainless steel screws, plumb and discharging into the stormwater gully or pipe inlet to the Marley required practice.
For wet systems when downpipes are holding water for a prolonged period of time and are therefore subjected to head pressure, only round downpipes are suitable. Marley does not recommend uPVC downpipes be buried, instead Stormwater/DWV pipe should be used for this application.
After installation use a mineral based undercoat and two coats of 100% weatherable acrylic paint. Do not paint the inside of spouting or internal brackets.
Delete this clause when not painting the Marley uPVC spouting system.
Replace damaged or marked elements.
Leave the whole of this work discharging completely and freely into the stormwater system and free of all debris. Leave work to the standard required by following procedures.
Remove debris, unused materials and elements from the site.
For further details on selections go to www.marley.co.nz
Substitutions are not permitted to the following, unless stated otherwise.
If substitutions are permitted modify the statement above, ensure the NO SUBSTITUTIONS clause from GENERAL is treated the same.
Select the options to suit the project and delete options not specified.
Manufacturer: | Marley |
Profile/type: | Marley Classic™ |
Size: | 128mm |
Cross section: | 6700mm² |
Colour: | White |
Bracket type: | Internal |
The NZMRM CoP has a calculator tool for sizing roof drainage, including gutters, valleys and downpipes.
Manufacturer: | Marley |
Profile/type: | Marley Stormcloud® quarter-round |
Size: | 123mm |
Cross section: | 5100mm² |
Colour: | White |
Bracket type: | Internal |
The NZMRM CoP has a calculator tool for sizing roof drainage, including gutters, valleys and downpipes.
Manufacturer: | Marley |
Profile/type: | Marley FL2® |
Size: | 128mm |
Cross section: | 4800mm² |
Colour: | White |
Bracket type: | ~ |
Option:
Bracket type: | Internal or external |
The NZMRM CoP has a calculator tool for sizing roof drainage, including gutters, valleys and downpipes.
Manufacturer: | Marley |
Profile/type: | Marley Typhoon® half-round |
Size: | 133mm |
Cross section: | 6100mm² |
Colour: | White |
Bracket type: | ~ |
Option:
Bracket type: | Internal or external |
The NZMRM CoP has a calculator tool for sizing roof drainage, including gutters, valleys and downpipes.
Manufacturer: | Marley |
Profile/type: | Marley Magnum® half-round |
Size: | 189mm |
Cross section: | 14,300mm² |
Colour: | Grey |
Bracket type: | External |
For commercial applications.
The NZMRM CoP has a calculator tool for sizing roof drainage, including gutters, valleys and downpipes.
Manufacturer: | Marley |
Profile/type: | Marley RP65® 65mm Round |
Size: | 65mm |
Colour: | White |
Bracket type: | ~ |
Option:
Bracket type: | Flush or stand off |
The NZMRM CoP has a calculator tool for sizing roof drainage, including gutters, valleys and downpipes.
Manufacturer: | Marley |
Profile/type: | Marley RP80® 80mm Round |
Size: | 80mm |
Colour: | White |
Bracket type: | ~ |
Option:
Bracket type: | Flush or stand off |
The NZMRM CoP has a calculator tool for sizing roof drainage, including gutters, valleys and downpipes.
Manufacturer: | Marley |
Profile/type: | Marley Rectangular 65 |
Size: | 65mm x 50mm |
Colour: | White |
Bracket type: | ~ |
Option:
Bracket type: | Flush or stand off |
The NZMRM CoP has a calculator tool for sizing roof drainage, including gutters, valleys and downpipes.
Manufacturer: | Marley |
Profile/type: | Marley Rectangular 100 |
Size: | 100mm x 50mm |
Colour: | White |
Bracket type: | ~ |
Option:
Bracket type: | Flush or stand off |
The NZMRM CoP has a calculator tool for sizing roof drainage, including gutters, valleys and downpipes.
Manufacturer: | Marley |
Profile/type: | Marley Magnum® 100mm Round |
Size: | 110mm |
Colour: | Grey |
Bracket type: | Stand off |
For commercial applications.
The NZMRM CoP has a calculator tool for sizing roof drainage, including gutters, valleys and downpipes.
All downpipe options include a full range of fittings including external and internal bends, clips, round outlets (to suit profile) and stormwater adaptors.
Co-extruded colour outer layer with grey uPVC internal layer.
Manufacturer: | Marley |
Profile/type: | Marley Stormcloud® quarter-round |
Size: | 123mm |
Cross section: | 5100mm² |
Bracket type: | Internal |
Colour: | ~ |
Option:
Colour: | Grey Friars, Ironsand or Black |
The NZMRM CoP has a calculator tool for sizing roof drainage, including gutters, valleys and downpipes.
Manufacturer: | Marley |
Profile/type: | Marley Typhoon® half-round |
Size: | 133mm |
Cross section: | 6100mm² |
Bracket type: | ~ |
Colour: | ~ |
Options:
Bracket type: | Internal or external |
Colour: | Grey Friars, Ironsand, Black, Copper or Titanium |
The NZMRM CoP has a calculator tool for sizing roof drainage, including gutters, valleys and downpipes.
Manufacturer: | Marley |
Type: | RP80® downpipe |
Profile: | Round profile |
Size: | 80 mm round |
Bracket type: | ~ |
Colour | ~ |
Options:
Bracket type: | Flush Bracket, Stand off Bracket |
Colour: | Grey Friars, Ironsand, Black, Titanium or Copper |
The NZMRM CoP has a calculator tool for sizing roof drainage, including gutters, valleys and downpipes.
Manufacturer: | Marley |
Type: | ~ |
Colour: | ~ |
Options:
Type: | L spreader, T spreader, Reduced L spreader |
Colour: | White, Grey Friars, Ironsand, Black, Titanium or Copper |
Manufacturer: | Marley |
Type: | Untrapped rainwater gully |
The Rainwater Gully has a two piece removable lid, removable debris basket and 3 sizes of knockout to suit different downpipe diameters.
Manufacturer: | Marley |
Size: | To fit 80mm downpipe |
Material: | uPVC |
Colour: | ~ |
Option:
Colour: | White, Grey Friars, Ironsand, Black, Titanium or Copper |
The Marley Curve™ works as a leaf and debris diverter/water filter for new or existing downpipes.
Screen design draws rainwater in while preventing leaf matter and other debris from entering the water tank or stormwater system and thereby reducing the chance of sediment build-up / blockage.
Manufacturer: | Marley |
Size: | To fit 80mm downpipe |
Material: | uPVC |
Colour: | ~ |
Option:
Colour: | White, Grey Friars, Ironsand, Black, Titanium or Copper |
The Marley Twist® compact rainwater diverter provides access to rainwater from new or existing downpipes. It uses an online twist on-off control and connects directly to a collection tank via standard hose fittings. Also filters leaves and debris.
Manufacturer: | Marley |
Item: | ~ |
Option:
Item: | Includes components necessary to complete the installation which are not supplied as part of the standard system, such as dropper outlets, expansion outlets, outlet strainers, adaptors (65mm to 80mm, 80mm to 90mm, 80mm to 100mm), etc. Refer to Marley for further information on complete range of components available if required. |
Brand/type: | ~ |
Finish/colour: | ~ |