Standard Gutter Size Australia

Measure your gutter across the top from the back where the gutter meets the home to the outer edge.

Standard gutter size australia. Calculators for designing eaves gutters box gutters downpipes pipes and open channels etc to australian standards. Stratco gutters are strong yet lightweight making them easy to handle. There is no limit to downpipe size or eaves gutter size. And the provision of appropriate overflow devices.

Most downspouts are rectangular but they can also be round or square. You should have enough gutter downspouts to effectively handle the size of your entire gutter system. Roof drainage systems should be designed and detailed by a suitably qualified trade or professional in accordance with the bca and the australian standards. Gutter downspout sizes are 3 to 6 inches.

There is detailed government legislation regarding the design installation and maintenance of guttering. There are two main common sizes of gutters and one of them is 5 inch. Available in the full range of 22 colours our latest generation colorbond steel gutter fascia and downpipes are made with the same five layer system as our roofing bringing you the benefits of activate technology and the reassurance of 50 years of colorbond steel testing under harsh australian conditions. Five inch k style gutters or 6 inch half rounds the most common residential sizes are able to handle the rainfall on most houses in most parts of the country.

See photos below most residential gutters will measure approximately 5 inches across the top with the actual opening being approximately 4 5 inches. But houses with big steep roofs or those located in climates prone to heavy downpours may need wider gutters and extra downspouts to keep rainwater from overflowing. Design of eaves gutters box gutters downpipes to the australian national plumbing code as nzs 3500 3. Particular reference should be made to the correct sizing of gutter.

The code limit is 150mm for dp s and 26 800 sq mm for flat eaves gutters the program will calculate the size and number of downpipes downspouts leaders required and the eaves gutter sizes for any roof. Quantity and placement of downpipes. The larger a gutter downspout the more water it can drain quickly.