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Tricore®

Performance

Why Tricore®?


Weather Secure – continuous roofing sheets with no end laps or joins which rely on sealant; the slotted roof rail and fastening system negates the use of long fasteners through the roof sheet that would flex due to thermal expansion.

Insulates – consistent R-Value across the roof, reliable for the life of the roof; fastening system reduces energy loss from thermal bridging.

Aesthetic – your choice of roof profile including Dimondek 630 clip-fastened roof sheets in continuous lengths up to 90m*.

Straightforward – easy to install to Building Code requirements using the Metal Roofing Code of Practice; building is closed in quickly enabling sequencing of sub-trades to be optimised. Easy to maintain as the roof sheet can easily be replaced if damaged without disturbing the insulation.

For NZ – designed in New Zealand specifically for the rigors of New Zealand’s environment. New Zealand Building Code compliant to clause E2/AS1 and H1.

Warranty – 15 year system warranty.

The next generation in roofing is available today, specify Tricore® on your next commercial roofing project.

How it works

The Role of a Vapour Barrier


The Problem

In any insulated roof system the surface on the inside of the insulation is maintained close to the internal air temperature and the moisture in the air will therefore not condense on the inside surface. However, when the warm air migrates past the internal surface and through the insulation it will eventually reach a surface that is cool enough to cause the moisture in the air to condense. Accumulation of this condensation will reduce the effectiveness of the insulation and will cause long-term issues with the durability of the insulated roof materials.



Vapour Barrier as a Solution


A vapour impermeable layer can be installed below the insulation to prevent the warm inside air from migrating anywhere. However, reliance on a vapour barrier solution is not recommended because no vapour barrier is 100 percent reliable since there will be laps in the material, fastener holes and also penetrations for services and lighting.



The Tricore® Solution


Tricore™ has a partial vapour barrier in the form of the profiled steel lining sheet. It is accepted that some warm internal air will migrate through laps in the lining sheets and through fastener holes.

The Tricore™ system includes a high-quality roof underlay positioned on top of the insulation with sealed laps that permits transfer of water vapour but prevents condensation moisture from passing through to the insulation below.

The Tricore™ Roof Rail is positioned above the PIR insulation board and the roof underlay to create an air space immediately below the metal roof sheet.

Thermal Insulation

Thermal Insulation


The Tricore™ insulated roof system uses high-quality Enertherm PIR rigid insulation in a range of thicknesses that can be selected to achieve the required thermal resistance.

Insulation Board


High-quality Enertherm PIR with tri-laminated aluminium foil facing to both sides, with minimal shrinkage over time

– Large panel sizes can be used minimising the risk of loss of R-value due to gaps at joins
– Density : 32 kg/m3
– Compression Strength : at 10% deformation ≥ 175 kPa (EN 13165)

Available as square edge
Complies with EN13165 for thermal performance

PIR Thickness (mm)
R* (m² °C/W)
50
R* (m² °C/W)
2.25
70
R* (m² °C/W)
3.15
80
R* (m² °C/W)
3.60
100
R* (m² °C/W)
4.50
120
R* (m² °C/W)
5.45
140
R* (m² °C/W)
6.35

* Based on PIR only without the additional R value from surface effects and additional Tricore components.

The Tricore® system is fastened to the structure in a way that minimises the effect of fasteners penetrating the insulation and ensures that the roof fasteners on the cold roof side of the assembly only penetrate as far as the ventilated roof rail and therefore do not form a thermal bridge to the warm internal side.

The quality of the Enertherm PIR rigid insulation is such that shrinkage of the panels does not occur to any extent that would result on gaps opening up between panels over time.

Tricore® details have been developed to ensure that the thermal envelope is continuous at gutter lines and ridge.

Acoustic Performance

Acoustic Performance


Sound transmission through the roof and into an enclosed building space is typically either airborne sound (from sources such as road traffic or aircraft) or structure borne sound (from rainfall impact on the roof surface). The Tricore® Insulated Roof System can be designed to reduce sound levels within the building space for either or both of these sound transmission cases.


The Tricore™ Acoustic Performance Guideline table provides a sound transmission design guide for expected performance based on acoustic laboratory testing and expert opinion from Marshall Day Acoustics. The information is given as a guide only for a reasonable expectation of performance since the as-built performance will depend on construction details and quality of finish that are both outside the scope of the acoustic analysis.


Sound Transmission Class (STC) is a measure of the reduction of airborne sound achieved by the Tricore® system in combination with either integral layers of board and/or different types of suspended ceiling. High STC values represent better performance.


Rain Noise (NC) is a measure of the sound level expected in the building space resulting from a range of rainfall rates. It is given for two types of building space. Note that the rainfall rate is the average rainfall over a one hour period and not peak rainfall. Low NC values represent better performance.


It is clear from the design guidelines that for buildings where sound level reduction is critical to occupant comfort the most effective design approach is to use a suspended ceiling rather than include extra mass by way of layers of board within the Tricore® Insulated Roof System.

Building Space
Floor / Roof Area (m2)
Floor to Ceiling Height (m)
Reverberation Time (seconds)
Classroom
Floor / Roof Area (m2)
100
Floor to Ceiling Height (m)
2.7
Reverberation Time (seconds)
0.5
Open Plan Office
Floor / Roof Area (m2)
500
Floor to Ceiling Height (m)
3.0
Reverberation Time (seconds)
0.7 - 0.8
Gymnasium
Large reverberant space
Floor / Roof Area (m2)
1200
Floor to Ceiling Height (m)
11
Reverberation Time (seconds)
3

Notes:

1. The Tricore® insulated roof system includes 0.55 mm steel liner, PIR insulation board in a range of thicknesses from 50mm to 120mm, roof underlay, 27.5mm air space, 0.55mm steel roof sheet.

2. Reference space descriptions for guideline NC performance:

Building Space

Floor / Roof Area (m2)

Floor to Ceiling Height (m)

Reverberation Time (seconds)

Classroom

100

2.7

0.5

Open-plan Office

500

3.0

0.7 – 0.8

Gymnasium / large reverberant space

1200

11

3

3. Additional mass layer integrated with Tricore® can be placed either over or under the PIR insulation board with 5mm maximum gap between boards. Guideline performance based on 10mm Gib Weatherline at nominal 8.6 kg/m2 or 13mm GIB Weatherline at nominal 11.2 kg/m2.

4. Suspended ceiling performance is based on a minimum 200 mm space between the ceiling and the Tricore steel liner, no acoustic blanket in the cavity, 13mm GIB plasterboard (nominal 8.7 kg/m2) fixed to a lightweight steel grid, mineral fibre ceiling tiles (nominal 3.6 kg/m2), or fibreglass ceiling tiles (nominal 1.5 kg/m2) in a lay-in grid.

5. Rainfall rate is the average rainfall over one hour based on an appropriate return period for the location and building use.

6. STC and NC values are based on test and calculation by Marshall Day Acoustics Ltd (Report Rp002 r03 20170140, 3 July 2019) and are given as general performance guidelines only. It is reasonable to expect performance to be achieved within +/- 2 dB of the STC guideline and +/- 3 dB of the NC guideline. Final design and acoustic performance is the responsibility of the design engineer for each specific building project and must account for specific requirements and as-installed site conditions.

Components

Prefinished Lining Sheet


NPM 900 profile in Zincalume, available in 0.55mm or 0.75mm steel thickness to suit purlin spacing and construction loads.



Pan fixed to purlins every second pan and side laps stitched fastened at 600mm centres to achieve rapid enclosure of the building.

Maximum spans to support 1kN foot traffic load and 2.0kPa† ultimate limit state (ULS) wind load.
NPM 900
0.55mm
0.75mm
End Span (mm)
0.55mm
1800
0.75mm
2200
Internal Span (mm)
0.55mm
2700
0.75mm
3400

Based on fastening every second pan of all sheets on all purlin lines.


Slotted Roof Rail



Enables free flow of ventilation air and drainage of any moisture that may be present.

Ventilated air space ensures moisture accumulation is removed from the underside of the roof sheet. Given this, Relative Humidity at the roof sheet underside is not expected to exceed 90%. By comparison, an insulated roof build-up that does not have a sufficiently ventilated space below the roof sheet could be expected to have a Relative Humidity at the roof sheet underside exceeding 90% for up to 8 months of the year, creating a significant risk of roof sheet corrosion.



Ensures that any leakage at the roof fastener is managed by the roof underlay, preventing fastener leakage entering the PIR.



Enables the roof fasteners to be separated from the fasteners that penetrate the warm side of the system.



Galvanised steel to provide sufficient screw holding fastened through the PIR board and into the structural purlin at 300mm centres.

Roof Sheet and Underlay



Choice of long run profile, with no end laps or reliance on sealant to achieve weather security, including clip fastened Dimondek 630 to remove fastener penetration of the roof sheet.



Proven load/span data for each roofing profile based on product testing and history of use.



Underlay is supported by the PIR boards and absorbs any moisture present below the roof sheet, releasing it to drying air in the ventilated space below the roof sheet.

Drawings

Relevant Product CAD Details

Below you will find all of the relevant product CAD technical details in .dwg, .pdf & .rvt format.


If you have any questions regarding the details below please contact one of our technical team on 0800 ROOFSPEC.

Download all .dwg as zipUpdated March 2023
Product Technical Statement

Product Technical Statement


To help you get through the building consent process as quickly as possible, we have developed the Product Technical Statement (PTS) downloads to make it quick and easy for both Architects and Home Owners to access the documentation required.

The PTS downloads hold all of the information that the council requires for a building consent where Dimond product is specified.

Download Product Technical StatementLast updated March 2023
Brochure

Product Brochure



Need a brochure for this product? Here you can download one with the basic information and details you need during the decision process.

Download Product BrochureLast updated March 2023