- Fitting the support arms
- Mounting and joining the gutter
- Attaching the stop ends
- Cutting in the outlets
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Install Your Trimline Steel Guttering
Cardinal Steels’ Trimline guttering system provides a sleek, architectural finish. Because it is factory-bent to your specific roof pitch and supplied in 3m lengths, the system is designed for a precise and efficient installation.
Need guttering to suit your roof profile?
1. Install the Support Arms
The support arms provide the structural foundation for the gutter. Position them onto the ridges (top crowns) of the box profile roofing sheets, spaced at regular intervals of typically 600mm to 1000mm. Fix the arms through the roofing sheet and into the purlins below using appropriate primary fixings.
2. Mount the Gutter
Since the gutter is pre-bent to your roof’s pitch, it will sit perfectly parallel to the building once attached to the arms. Align the top edge of the 3m gutter section with the ends of the support arms, then secure the gutter to each arm using either stitcher screws or pop rivets.
3. Joining Lengths with Internal Butt Straps
For runs longer than 3 metres, use the internal butt straps to connect sections.
- Slide the butt strap halfway into the first gutter section. For an enhanced water seal, you can apply a bead of silicone to the strap before sliding it into place.
- Slide the next 3m gutter length over the strap until the sections meet, then secure the joint by fixing through the gutter face into the internal strap with stitcher screws or rivets at both ends of the join.
4. Attach Stop Ends
Fit the stop ends to the start and the finish of your gutter run. For a secondary water seal, you can apply a small amount of silicone to the contact edge. Fix securely into place using stitcher screws or rivets.
5. Site-Cut Outlets
Outlets are installed on site to ensure perfect alignment with your downpipe locations. Mark the required position and drill the outlet hole through the base (sole) of the gutter using a hole saw.
Drop the outlet inside the hole so the flange sits flush against the gutter base, then fix it in place using stitcher screws or rivets through the flange and into the gutter sole. A bead of silicone under the outlet flange can be used to ensure a completely leak-proof transition.
Installation Note
Ensure all metal swarf (shavings from drilling and fixing) is brushed out of the gutter immediately. Leaving swarf in the gutter can lead to localised surface rust spots on the coating.
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