Where a flat recessed joint look is wanted without compromising the quality of the materials, Fielders® Boulevard™ is the solution. A contemporary wall cladding, Boulevard™, is available in a wide array of colours and finishes and is the most versatile in the Finesse® range. It offers sophisticated European technologies combined with Fielders® local know-how to deliver a high end look to any project.
Boulevard™ is a pierced-fixed wall cladding system installed with a ventilated air space. It involves laying interlocking panels on a metal framework fixed to the supporting structure. The panels are simply connected by the use of an interlocking groove giving the elegant appearance of a recessed joint.
Boulevard™ can be laid vertically or horizontally. The choice of direction implies different aesthetics and technical solutions for the main flashings. Panels are fixed directly on plywood or steel battens.
Boulevard™ is available in two standard widths 285mm and 485mm, all with a side depth of 22mm. The panel comes in lengths from 0.5m to 8.0m, with a width of longitudinal joint of 5mm to 18mm, with 15mm being the standard.
|Property||285mm Pan Width||485mm Pan Width||Notes|
|Base Metal Thickness (mm)||0.55||0.70||0.75||0.55||0.70||0.75||BMT|
|Total Coated Thickness (mm)||0.60*||0.75*||0.80*||0.60*||0.75*||0.80*||TCT|
|Mass / Unit Length||ZINCALUME® steel||1.76||2.25||2.23||2.65||N/A||3.36||kg/m|
|Mass / Unit Area||ZINCALUME®steel||5.94||7.51||8.03||5.34||N/A||7.23||kg/m2|
|Nominal Cover Width (mm)||300||500||mm|
|Minimum Yield Strength (MPa)||G300|
|Coating Class||AM100 - COLORBOND® steel|
AM100 - COLORBOND® Metallic steel
AM125 - ZINCALUME® steel
AM150 - COLORBOND® Ultra Steel
|Minimum Coating g/m2 of Zinc -
|Tolerance||Sheet length ±7mm|
Cover width ± 4mm
|Thermal Expansion||2.9mm average per 5.0 metre|
@ 50˚C change
- Pan widths noted above exclude recessed groove/express joints. This needs to be added to provide cladding cover width. Eg 285mm pan with a 15mm express joint has a cover width of 300mm.
- 0.75mm and 0.70mm BMT is available subject to minimum order quantities, and availability in each state.
- The COLORBOND®; and ZINCALUME® steel is in accordance to AS 1397, AS 1365 and AS 2728. The installation of the cladding should be in accordance to AS 1562.1 and HB39.
- *is based on Standard COLORBOND®; steel single-sided material. For other painted steel options please contact a Fielders® representative.
- To assist minimising the effects of oil canning in Boulevard it is recommended to keep panel length under 8m. Longer length may be available subject to minimum order quantity.
Non-Cyclonic Load Span Tables
The design pressures, allowable spans and design data for Boulevard™ have been determined from tests carried out in accordance with on the following Australian Standards:
- AS 1170.2:2011 Structural design actions Part 2: Wind actions
- AS 1562.1-1992 (R2016) Design and installation of sheet roof and wall cladding Part 1: Metal
- AS 4040.0-1992 Methods of testing sheet roof and wall cladding Part 0: Introduction, list of methods and general requirements
- AS 4040.1-1992 Methods of testing sheet roof and wall cladding Method 1: Resistance concentrated loads
- AS4040.2-1992 Methods of testing sheet roof and wall cladding Method 2: Resistance to wind pressures for non-cyclone regions
- AS4040.3-1992 Methods of testing sheet roof and wall cladding Method 3: Resistance to wind pressures for cyclone regions
- AS4055:2012 Wind Loads for Housing
SA HB 39: 2015 Handbook - Installation code for metal roof and wall cladding National Construction Code of Australia
Wind Loading Design Parameters
Wind Pressure Capacities: 0.55mm BMT
|Serv. (kPa)||Strength (kPa)||Spacing (mm)||Serv. (kPa)||Strength (kPa)|
- * Steel batten, 40mm x 0.55mm BMT G550. Maximum batten span 1500mm.
- ** Steel batten, 61mm x 0.75mm BMT G550. Maximum batten span 2000mm.
- *** 15mm F11 Structural CD Grade plywood supports at max 600mm centres fastened as per manufacturers recommendations for sheet flooring.
- Serv. denotes serviceability
Figure BL NC 001 End Spans, Internal Spans and Overhangs illustrates the terminology end spans, internal spans, and overhangs and their reference to the supporting substructure. This terminology has been used in the following Maximum Recommended Span and Wind Load Capacity tables.
Maximum Recommended Wall Cladding Span
|Gauge||Single (mm)||End (mm)||Internal (mm)|
Importance Level 2
Maximum Roof Height H = 10m
External Pressure Coefficients:
Cp,e = -0.65 (walling)
Internal Pressure Coefficient:
Cp,i = 0.2
Local Pressure Factors:
Kl = 2.0 (end & single spans)
Kl = 1.0 (internal spans)
Table BL RS NC 001 - Boulevard™ Non-Cyclonic
- Minimum Steel support 0.55mm BMT G550.
- Maximum overhang is 100mm for all gauges.
Boulevard™ provides a water screen only and needs to be fitted on a water tight barrier. This may consist of a precast wall or steel sheeting backing, such as Panelform™, or another waterproof membrane like heavy duty roof sarking.
Prior to commencement ensure the surface that the system is being fixed to is free of sharp edges and in the correct plane.
If the membrane is to be fixed before the 40mm batten use the following procedures. It is recommended that the membrane be Panelform™ as this will allow the membrane to be made watertight without the chance of movement and vibration.
Fixing of the Membrane
(Sisalation with insulation sarking attached)*
- Check that the steel work or concrete is free of any sharp edges or protrusions that may puncture the membrane.
- The sarking must be a minimum of 453 Sisalation or equivalent with the Sisalation to the outside face.
- The sarking must be hung and sealed at the top. It must be free of ripples and puckers with holding battens between the 40mm vertical battens securing it to the supporting member. See BL ID NC 008.
- All laps in the sarking must be made with 150mm lap sealed with double sided tape between the faces of the foil and taped with sisal tape on the outside face.
- The perimeter of the membrane (sarking) must be sealed also with premium quality Sisal tape with holding or 40mm battens to secure it. See BL ID NC 011.
- Note: - It is essential that attention is paid to ensuring that sarking is air tight, fixed in a way that it won’t flap or tear away at the laps or edges.
- At the bottom of the façade a flashing is required to direct any water from the blanket membrane external of the façade. This will be done in a way as to allow any water to pass between the flashing and the foot mould. See BL ID NC 009.
- If any of the membrane is to be fixed horizontally a different fixing procedure is to be followed; please contact your local Fielders® Representative.
Fixing of the Backing Plates
- The backing plates should be full length where possible and fixed with Teks with a Neo washer or a 3mm pop rivet at a maximum of 1200mm centers.
- If pop rivets are used they should be sealed rivets or sealed with silicone.
- Any laps should be a minimum of 100mm.
- The top of all backing plates should have a return 10mm fold to prevent water from being blown over the end of the plate. See BL ID NC 012.
- Backing plates for Express joints should be 100mm wide overall with 10mm return fold on both sides if the Express joint is 15mm wide. See BL ID NC 004.
Fixing of the 40mm Battens
- The battens should be fixed on both sides with 10g-16x16mm Hex Head Tek Screws to the girts through the membrane. See BL ID NC 004 and BL ID NC 005. If an insulation blanket is fitted the screws should be 10g-16x25mm Hex Head Tek Screws.
- If fixed to a concrete wall the fixing centers of the battens should be a maximum of 450mm apart.
- All vertical 40mm battens should be fixed at a maximum of 450mm apart.
- All battens fixed to support vertical joints, external and internal corners should be positioned so that the return edge of the backing plate is center of the face of the batten. See BL ID NC 004 and BL ID NC 005
- . This allows the fastener fixing the panel to be fixed in a location that doesn’t penetrate the backing plate.
Care should be taken not to puncture the membrane while fixing the 40mm battens.
If it is punctured it should be taped on both sides of the puncture.
Fixing of the Panels (Horizontal)
- The top mould of parapet cap should be fixed first with the female edge downward. See BL ID NC 008.
- The panels should have a foam block both ends fixed 25mm inside the stop end of the panel with the center of the foam block center to the 10mm return fold on the side of the backing plate. See BL ID NC 004, BL ID NC 005, BL ID NC 012.
- A small corner should be removed off the bottom of the foam block to allow water or condensation to drain out freely. See BL ID NC 012.
- This is required on straight panels and internal corners but not on external corners.
- Measure out a matrix and mark the steel battens for the full length with the width of the panel plus gap so that when the panels are placed in position the bottom edge of the female rib can be lined up to the marks. This will ensure that the panels are fixed parallel with the same gap along the complete face. See BL ID NC 014.
- Before installing a panel, a silicone bead must be applied to the back of the male and female edges from the center of the foam block to the edge of the panel. See BL ID NC 012.
- The male edge of the panel is then inserted into the female edge leaving a gap that is predetermined, lining up the bottom edge of the panel with the mark on the hat section. See BL ID NC 012 and BL ID NC 013.
- Screw the trailing female edge to the hat section with 10g-16x16mm Wafer Head Tek Screws.
- Continue to fix all the panels until the bottom of the façade is reached.
- When all sections of the façade are complete the foot mould is then fitted with the top vertical edge engaging the female recess on the panel. The predetermined gap between the panels should be maintained between the foot mould and the bottom panel.
- The foot mould must be fitted in a way to allow water to drain between the foot mould and the flashing at the bottom of the membrane.
- If the top of the façade has a fall (not horizontal), cut and fold the panels as in BL ID NC 006.
- When the side of a façade finishes against a brick or concrete wall it should be done as per BL ID NC 011.
Wafer or low profile Hex Head Tek Screw, with a minimum class 3 of coating
Wafer or low profile Hex Head Type 17 Screw with a minimum class 3 of coating
Fixing of Windows and Doorways
- When fixing the windows & doorways (penetrations) remember that the panels are the waterproof seal and the membrane is the air seal and backup water seal.
- The membrane must be sealed to the penetrations in a way that it can’t over time break away. This may require the fitting of a holding batten. It also must be draining to the outside of the building.
- The panels over the penetrations must be flashed to the penetration allowing any water that drains from the membrane to escape between the flashing and the top of the penetration.
- BL ID NC 008-013 show some typical details to the top, bottom and sides of window penetrations.
Boulevard™ creates a water screen and not a watertight barrier. If a watertight barrier is required it is recommended that an additional cladding layer is included behind the Boulevard™ such as Panelform™. For further information contact Fielders®.
Care needs to be taken when installing insulation with Boulevard™ roof sheeting. When insulation thicknesses up to 50mm are installed the screws may need to be increased depending on the thickness and density of the insulation. When the screw is properly tightened into metal there should be a minimum of three (3) threads protruding past the support being fixed in to. For timber, the screw must have a minimum embedment of 25mm into timber.
When insulation is required in conjunction with Finesse® profiles, Fielders® recommend the use of a thermal spacer to help maintain Rw values as well as minimising any bulging in the profile caused by the insulation.
Insulation blankets and batts can cause wide flat pan cladding to bow out between the supports, between fasteners along the support, or bow the pans. For insulation blankets and batts as well as more dense glass wool and rock wool, and thicker insulation, spacers are recommended.
Oil canning is a characteristic of thin gauge cold formed metal products which is caused by the internal stresses with the metal. There are many factors that influence the degree of oil canning.
For further information about Oil Canning, please refer to our Oil Canning reference page.