Warranty

Product Warranties
Roofing & Cladding Product Warranty

Warranties for commercial applications are issued on a job by job basis. It is imperative that care is taken during the planning process to choose the roofing, wall cladding, guttering and fastener system that will provide the life expectancy in the environment in which it will be installed, as incorrect selection could result in no warranty being available. Any warranty is not Dimond’s responsibility and will be subject to the coil suppliers conditions. The site may affect the warranty term and/or product suitability so it is vital that the customer supplies accurate site information and that the designer is fully aware of the suitability of products specified.



To assist you in determining the system that will best meet your warranty expectations Dimond have in place a Warranty Inquiry Service. Your design decisions on product type, material thickness, profile, paint coating type and colour, along with site details including address, distance from sea and degree of exposure will be required to enable us to provide a warranty. To access the service, please contact Dimond on 0800 DIMOND.



All warranties will carry a required maintenance clause, which must be complied with to ensure the warranty remains valid.
Often aspects of design such as roof shape and roof pitch can influence the maintenance requirements. Due consideration of these factors during the design process is wise.



As a general guide, provided the materials are correctly selected and installed from Table 2.1C for the environment and coil on cut edge protection lacquer used if required by the coil coater, and building design does not impact on durability, it is reasonable to expect the following warranty periods will be available for your roofing and wall cladding. Please note that no warranty is available for Galvsteel material regardless of which environmental category it is used in.



Paint products from different suppliers should not be mixed on the same job. This applies when the roofing is from one material supplier and the flashings from a different material supplier. No warranty would be available on either material.



Warranties only apply to roofing and cladding and guttering situations and not when used as fences, shower liners or planter boxes.



Guideline Warranty Periods



Steel substrate with appropriate paint coating:

  • Commercial roofs:
    15 years to perforation of substrate and fastener strength retention.
    15 years to paint coating peeling, flaking or excessive fade.
  • Residential roofs (dependent on environment):
    Up to a maximum 30 years to perforation of substrate and fastener strength retention.
    Up to a maximum 20 years to paint coating peeling, flaking or excessive fade.


Aluminium (unpainted):

  • Commercial and residential roofs:
    15 years to perforation of substrate.


Aluminium substrate with appropriate paint coating:

  • Commercial roofs:
    15 years to perforation of substrate and fastener strength retention.
    15 years to paint coating peeling, flaking or excessive fade.
  • Residential roofs:
    30 years up to and including Severe Marine Environments, and 20 years in Very Severe Marine Environments, to perforation of substrate and fastener strength retention.
    15 to 20 years dependent on environment to paint coating peeling, flaking or excessive fade.


Duraclad

  • Commercial and residential roofs and walls:
    20 years to fibre show through or perforation of sheet.

Routine Maintenance



Washing


All metal surfaces must be kept clean for best durability. Warranty conditions require regular washing either by natural rainwater or by manual washing and scrubbing with a soft bristle brush.



The frequency of washing must be sufficient to prevent build up of debris, dirt or salt deposits and will vary depending on location and degree of protection from rainfall.



As a general guide the following frequencies can be used as a starting point.

Environment
Washing Frequency
Moderate / Marine
Washing Frequency
Every 6-12 months
Severe Marine
Washing Frequency
Every 3-6 months
Very Severe Marine
Washing Frequency
Every 3 months

The need to wash can be reduced by building design that avoids the creation of metal roof or wall surfaces that are sheltered from natural rainfall.

  • Unwashed areas such as the exposed underside of roofing in soffits are not warranted, but can be specified as double sided paint surfaces to offer better durability to exposed roof undersides. Minimum coil quantities apply. Regular washing of these areas are still required. However they are not covered by the material warranty.



Overpainting



Once new or older pre-finished roofs are overpainted, the original material warranty becomes null and void, due to uncontrolled conditions and workmanship of the roof.



Substrate in Good Condition


Clean the surface and overpaint with 2 coats of an acrylic roof paint system, following the paint manufacturer’s instructions.


If the roof or wall cladding has had less than 2 years exposure to weathering, the acrylic paint manufacturer should be consulted for advice on pretreatment of surface to ensure adequate adhesion.



Substrate Requires Refurbishment



Clean the surface and coat any surface corrosion with a suitable conversion treatment and primer, then over paint with 2 coats of an acrylic roof paint system, following the paint manufacturer’s instructions. Check and replace any fasteners exhibiting advanced corrosion.



Rubbing



Hard rubbing on the unpainted Zincalume surface can cause black marks if the clear coating is worn through. If rubbing is unavoidable we recommend it be kept to a minimum to avoid the wear through of the protective clear coating.

Natural Lighting Products Warranty

Product performance is covered by the following warranties:


Maxilite®

  • Will not suffer excessive yellowing and degradation to cause a light transmission loss of more than 30% from the original value when installed, for a period of 10 years from installation.
  • Will not delaminate, allow protrusion of the reinforcing fibres through the surface, or fracture due to impact from hailstones up to 20mm diameter accompanied by winds of up to 100km/hr, for a period of 10 years from installation.
  • Will not permit water to penetrate right through the sheet for a period of 20 years from installation.



Durolite® , Durolite® HeatGuard 4 & Durolite® HeatGuard 8

  • •Will not suffer excessive yellowing and degradation to cause a light transmission loss of more than 25% from the original value when installed, for a period of 25 years from installation.
  • Will not delaminate, surface erode away, allow protrusion of the reinforcing fibres through the surface, or fracture due to impact from hailstones up to 20mm diameter accompanied by winds of up to 100km/hr, for a period of 20 years from installation.
  • Will not permit water to penetrate right through the sheet for a period of 25 years from date of installation.



Durolite ® FireGuard 2 & Durolite ® FireGuard 3

  • Will not suffer excessive yellowing and degradation to cause a light transmission loss of more than 25% from the original value when installed, for a period of 25 years from installation.
  • Will not delaminate, surface erode away, allow protrusion of the reinforcing fibres through the surface, or fracture due to impact from hailstones up to 20mm diameter accompanied by winds of up to 100km/hr, for a period of 20 years from installation.
  • Will not permit water to penetrate right through the sheet for a period of 25 years from date of installation.
  • Durolite FG2 will meet a Group 2 number in accordance with the NZBC verification method C/VM2 Appendix A.
  • Durolite FG3 will meet a spread of flame Group 3 number in accordance with the NZBC verification method C/VM2 Appendix A.



Durolite ® Webglass

  • Will not suffer excessive yellowing and degradation to cause a light transmission loss of more than 25% from the original value when installed, for a period of 20 years from installation.
  • Will not delaminate, surface erode away, allow protrusion of the reinforcing fibres through the surface, or fracture due to impact from hailstones up to 20mm diameter accompanied by winds of up to 100km/hr, for a period of 20 years from installation.
  • Will not permit water to penetrate right through the sheet for a period of 20 years from date of installation.
  • Will remain as a trafficable sheet, resistant to foot traffic loads, for a period of 20 years from date of installation.


These guarantees are subject to conditions relating to correct storage, handling and installation, exposure to unsuitable temperatures, debris or chemicals, and to terms regarding Dimond liability.



Maintenance Requirements


Dimond Natural Lighting Systems require at least the following maintenance as a minimum to ensure the guaranteedperformance is achieved. Additional regular maintenance can extend the useful life of the products.

  1. Keep surfaces clean and free from continuous contact with moisture and debris. Wash at least annually using a soft bristlebrush to remove dirt build-up.
  2. Inspect and replace any fasteners and washers that have deteriorated sufficiently to cause leakage risk or noticeable staining.
Rainwater System Warranty

Warranties for commercial applications are issued on a job by job basis. It is imperative that care is taken during the planning process to choose the Dimond rainwater disposal system that will provide the life expectancy in the environment in which it will be installed, as incorrect selection could result in no warranty being available.

To assist you in determining the system that will best meet your warranty expectations Dimond have in place a Warranty Inquiry Service. Your design decisions on product type, paint coating type and colour, along with site details including address, distance from sea and degree of exposure will be required to enable us to provide a meaningful warranty. To access the service, please contact your Dimond Key Account person or phone 0800 DIMOND.



All warranties will carry a required maintenance clause, which must be complied with to ensure the warranty remains valid.
Often aspects of design such as roof shape and roof pitch can influence the maintenance requirements. Due consideration of these factors during the design process is wise.



As a general guide, provided the materials are correctly selected from Section 2.1.1.2, Table 2.1B of the technical manual, and provided the building design does not impact on durability, it is reasonable to expect the following warranty terms will be available to your rainwater disposal system.



Steel and aluminium based materials

10 years to perforation of substrate.
5 years resistance to flaking, peeling and excessive fade.