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June 2018
PERFORMANCE
NATURAL LIGHTING SYSTEM PERFORMANCE STATEMENT
Description Dimond Natural Lighting Systems comprise:
• Maxilite®, Durolite®, Durolite® HeatGuard 4, Durolite® HeatGuard 8, Durolite® FireGuard 2 (FG2), Durolite® FireGuard 3 - bromine free (FG3), Durolite® WebglassTM and Durolite® translucent fibreglass sheeting products.
• Fasteners, washers and seals
• Flashings
• Underlays and safety netting
• Additional mid span support members
Material Properties
Maxilite® & Durolite® including Durolite® WebglassTM
Durolite® HeatGuard 4 & Durolite® HeatGuard 8 Durolite® FireGuard 2 & Durolite® FireGuard 3
Tensile Strength 80 MPa 111 MPa Impact Strength 8 Joules 10 Joules Shear Strength 90 MPa 90 MPa Modulus of Elasticity 5500 MPa 5500 MPa Compressive Strength 135 MPa 151 MPa Flexural Strength 150 MPa 181 MPa Specific Gravity 1.45 1.6 Water Absorption 2% in 24 hrs @ 26ºC 2% in 24 hrs @ 26ºC Temperature Stability suitability for an in-service temperature range of 20ºC to 95ºC
Scope of Use Dimond Natural Lighting translucent sheeting products are manufactured to the requirements of AS/NZS 4256.3.1994
in a range of profiles, sheet thicknesses and sheet compositions to meet the light transmission, wind load and durability
requirements for their intended use as Natural Lighting in roofs, walls and fences of AS/NZS 4257. Specific grades of product
can be manufactured to support concentrated foot traffic loads, but the standard product range is not intended to support
foot traffic.
Requirements In addition to the relevant content of the general Roofing and Wall Cladding System Performance Statement (Section 2.1.1.1) the Dimond Natural Lighting System design must cover the following aspects of systems performance.
• Durability 2.4.1.1.2 • Light transmission 2.4.1.1.3 • Solar heat gain 2.4.1.1.4 • Load/span capability 2.4.1.1.5 • Fastener suitability 2.4.1.1.5 • Condensation control 2.4.1.1.6 • Fire resistance 2.4.1.1.7 • Safety 2.4.1.1.8 • Maintenance requirements 2.4.1.1.2d • Installation information 2.4.1.3 • Thermal expansion 2.1.3.4
New Zealand Building Code Compliance Past history of Durolite® use in New Zealand indicates that provided the Dimond Natural Lighting Systems are designed, handled, stored, used and maintained in accordance with the guidelines given in this manual they will meet the relevant performance criteria in Clauses B1, B2, E2 and G7. In addition, fire compliance with Clause C criteria is achieved with Durolite® FG products, tested to verification Method C. Durolite® FG2 achieves a Group Number 2, Durolite® FG3 achieves a group Number 3.
Use Outside Stated Guidelines: If the need arises to use Dimond Natural Lighting outside the limitations and procedures given in this or other referenced literature, or if any doubt exists on product handling or use, written approval for use must be obtained from Dimond before the project commences.
2.4.1.1
2.4.1.1.1
June 2018
DURABILITY
(a) Sheet Characteristics The useful life of Natural Lighting products is determined by their ongoing ability to allow sufficient light into the building. Table 2.4A gives a guide for the recommended use of each of the product types and the expected useful life based on light transmission.
The long-term performance of Durolite® products is enhanced by the use of a 100-micron integral gel coat surface rather than a laminated polyester film (Maxilite®).
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