Box Gutter Building Regulations

These regulations ensure that guttering is correctly installed and designed to meet the drainage needs of the property.

Box gutter building regulations.

With building design being so restrictive on space these days this is the area where designers must think about how the roofing contractor will make the box gutter comply. Guttering is a vital part of your roof. The outlet of the box gutter may be blocked by debris or the box gutter outlet simply cannot discharge the water fast enough. Each box gutter run must discharge independently to ether a sump or directly out of the building without changing the size of the gutter or changing direction.

It may be lined with epdm rubber metal asphalt or roofing felt and may be concealed behind a parapet or the eaves or in a roof valley. Read more about compliant guttering options what does it mean for installers. Box gutters are essentially placed between parallel surfaces as in a valley between parallel roofs or at the junction of a roof and. It protects your home from water flowing off the roof which can cause damp or even structural damage to the building.

The regulations require that guttering has allowances for water to overflow gutters in a way that does not cause water to flow back into the structure. And project managersmust ensure that the building is constructed in accordance with the approved design. Plumbers must install a box gutter system in accordance with as nzs 3500 3 as nzs 3500 5 hb 114 and hb 39. In victoria the installation of box gutters is regulated plumbing work that must be carried out and certified by suitably registered licensed plumbers.

During site inspections building inspectors should refer deviations from the approved building permit involving the box gutter system relevant building surveyor. It sounds like you have an overflow situation. In order to manage that enormous amount of water gutter sumps must be employed. This will prevent water damage in the event of gutters overflowing either due to high rainfall or a blockage.

In effect for a commercial building that may have long roof lines or multiple pitches all box gutters downpipes and overflow measures must be able to cope with the deluge from a 1 100 year fi ve minute duration storm.