The complete Rainflo range — D-Shape and 1/2 Round guttering, downpipes and fittings, plus roofline connectors, for rainwater management and harvesting.
The essentials for installing a Rainflo PVC-U gutter system, drawn from our design and fitting guidelines.
01
One downpipe per 110m² of roof, a gutter bracket every 750mm, and an expansion bracket per 6m length and between corners more than 4m apart.
02
Make sure the fascia is level, vertical and painted. Fix the end brackets first, setting a fall of 1:600 (10mm per 6m) towards the outlets.
03
Measure and cut the profile square, allowing for expansion. Leave a 20mm gap at barge boards and parapet walls.
04
Use the outlet as a template, then cut the hole with a holesaw or jigsaw and remove all burrs.
05
Clean contact surfaces, apply an even layer of Freeflo non-pressure solvent cement to the fitting and clip it in place immediately.
06
Clip the back edge in, then snap the front edge over the ‘arrow head’ clips. Set the expansion gap to suit the temperature on the day.
07
Keep the first bracket at least 300mm from each corner and make sure both lips of the gutter clip securely over the fitting.
08
Fit pipes into the offset bend socket in the direction of flow and secure with at least two holderbats.
Fix gutter brackets at 750mm intervals, centre to centre. Brass or stainless steel screws are recommended.
The Rainflo gutter expansion bracket absorbs thermal movement. Fix it to the fascia, or leave it unattached as an expansion coupling where there’s no fascia.
Don’t solvent cement downpipe components, so they can be removed for maintenance later. Wipe off excess cement on the gutter — it browns in UV.
Straight answers about this range's specs, certification and applications.
Rainflo covers D-Shape and 1/2 Round gutters, downpipes, and roofline connectors for rainwater management.
Rainflo is certified to SANS 11.
D-Shape gutter is available in GUT/3 (3m), GUT/4 (4m) and GUT/6 (6m) lengths.
1/2 Round gutter is available in GTH/3 (3m), GTH/4.5 (4.5m) and GTH/6 (6m) lengths.
Yes — the Rainflo range is designed for rainwater management and harvesting alongside standard roof drainage.
Ebuhleni Industrial Park,
Cnr R103 & Eddie Hagan Drive
Cato Ridge, Durban
