AS3500.3 Compliance for Eaves Gutter overflow
When fitting Striproll Eaves gutters to Striproll Colorbond(r) Steel Fascia Board, Spacer clips must be fitted to provide overflow capacity.
The Plumbing Code of Australia requires that where high fronted eaves gutter is fitted that it must be installed with an overflow measure that prevents storm water entering the building during a storm event with a 5 minute duration and 100 year ARI (or 1% Annual Exceedance Probability [AEP])
Example overflow methods are set out in AS3500.3 "Appendix G" and HB:114 such as fitting gutters 25mm below the top of the fascia board or back flashing under the roof sheets to prevent backflow,
Should these methods not be suitable for your project (such as when fitting gutter to steel fascia board), a PCA based Performance solution MUST be implemented to ensure water will not enter the building in accordance with the PCA and AS3500.3.
Striproll Eaves Gutters fitted to Steel Fascia Board may utilise gutter spacer clips which must be installed to achieve the required overflow capacities for a PCA Performance Solution and Compliance with AS3500.3.
All Striproll Eaves Gutter products are available with certified Eaves Gutter overflow Capacities that can be installed as a Performance Solution to comply with AS3500.3 and NCC Volume 3 (Plumbing code of Australia). It is important that the Performance Solution is planned prior to product installation.
Please consult the local building authority, your registered Roof Plumber or your Roof Drainage Designer regarding compliance with the legislated requirements (PCA/NCC performance solution) to prevent overflow entering buildings.
Contact your nearest Striproll Sales Office prior to fitting your gutters for detailed information regarding product overflow capacities.