Building Box Gutters

As an alternative the top of the rainhead may be installed so that it is no higher than 50 per cent of the flow depth of the box gutter consistent with saa hb39 installation code for metal roof and wall cladding section 5 clause 5 7 3 and figure 5 7 3to prevent internal flooding or damage to the building or contents see figure 2.

Building box gutters.

Many commercial and residential buildings leak due to either poorly installed box guttering or aged rusted box gutters in need of replacement. If there is not such an overflow the water will go straight into the roof space and into your building and this can cause a number of problems. This effectively states that all box gutters must allow for 30mm of freeboard which is from the overflow point eg. The gutter collects rainwater from any roof and wall surface up hill from its position and discharges to a drainage system.

The wooden structure should slope to the outlet hole which should be positioned at the lowest point of the gutter. As a box gutter is usually located above a room or space in a building there is an increased risk that rainwater overflow could cause damage to the building or cause loss of amenity to its occupants. Call or email us to discuss a quote for your box guttering requirements. Rainhead overflow or specific box gutter overflow must be at least 30mm below the height of the back of the box gutter.

A box gutter is typically rectangular in size and concealed from view behind a parapet or other elements eg high sided fascia board. We can also seal your box gutter to extend its life and delay its replacement. So what is a box gutter. For a box gutter to work at its best it has to have an emergency overflow so that water has somewhere to go in the event of the gutter being blocked or extremely heavy rainfall.

Office and velux. All domestic box gutters must be a minimum of 200mm wide and 75mm deep. 2015 3 7 4 layout.