Gutter overflow is an issue that has been hitting our industry hard over the last 12 months, even though it has been a part of the AS/NZS 3500.3 since 1992.
The issue has been that guttering installation has not changed in over 100 years and plumbers simply did not notice the changes, the Plumbing Industry commission (PIC) also did not police the changes. With the change to the Victorian Building Authority (VBA) a lot of the shortcomings of the PIC where beginning to come into focus.
The Residential Metal Roofing Industry Association of Victoria (RMRIAV) engaged all of its members to gage how much of an issue this was in the Victorian building market, they found that this was almost a non-issue.
As the vice chairman of the RMRIAV and with complete agreement from the board we decided that one was too many and we asked our suppliers to find a solution to this problem.
Stramit is the principal partner of Johnson Roofing and we have worked closely with them to be at the forefront of the development of a solution for our customers.
Stramit have developed a four options for solving this issue:
- Slot area 720mm2/m – Overflow volume 0.3L/s/m. Meaning that the slot area for overflow in a meter of gutter is 720mm square allowing for 0.3 litres of overflow per second per meter.
- Slot area 1200mm2/m – Overflow volume 0.5L/s/m. Meaning that the slot area for overflow in a meter of gutter is 1200mm square allowing for 0.5 litres of overflow per second per meter.
- Stramit® Gutter Spacer – Overflow volume 1.2l/s/m. Meaning that the gutter spacer clip allows for 1.2 litres of overflow per second per meter.
- Stramit BAT® clip – Overflow volume 1.5l/s/m. Meaning that the BAT® spacer clip allows for 1.5 litres of overflow per second per meter.
For all information on these new additions to our offering please see the brochure attached click link then look for Stramit Overflow Options.pdf on the right near the bottom.
Or contact the office to arrange an appointment to discuss the changes.