What is the most common gutter profile used in the UK?

• High capacity/Deep half round/storm flow

• Half round

• Ogee (O. G. or ornamental gutter)

• Square Section

Which gutter profile has almost twice the capacity of half-round?

• Half round

• High capacity/Deep half round/storm flow

• Square Section

• Ogee (O. G. or ornamental gutter)

What does O.G. stand for in the context of rainwater systems?

• Outdoor Gutter

• Original Gutter

• Ornamental Gutter

• Old Gutter

Which rainwater pipe section is the most rigid?

• Half round

• Square rainwater pipes

• Round rainwater pipes

• High capacity/Deep half round/storm flow

What is the disadvantage of using square rainwater pipes?

• Not as rigid as round pipe

• Tends to block easily

• Fittings can be spun in any direction

• Common pipe size across all manufacturers

What is the advantage of using ogee guttering?

• Offers a lightweight and long-lasting alternative to cast iron gutters

• More rigidity than half-round type gutter profiles

• Good capacity and flow rate

• Must be installed to the correct fall

What is the disadvantage of using square section gutter?

• Not all manufacturer’s gutters and fittings are interchangeable

• It can silt up very quickly because of its flat bottom

• Some makes are no longer available and will not fit modern equivalent shapes

• Must be installed to the correct fall

What is the advantage of using deep half round or storm flow gutter profile?

• It gives good flow when laid to the correct fall, with little sediment build up

• Converters to other profiles and materials readily available

• All manufacturers use a common size

• Fittings are interchangeable between manufacturers

What is the disadvantage of using high capacity/deep half round/storm flow gutter profile?

• It’s expensive when compared to other gutter profiles

• Often incorrectly used on properties with large roof areas, causing the gutter to overflow

• Has a tendency to silt up due to its elliptical shape

• Must be installed to the correct fall

What is the advantage of using square section gutter?

• Not all manufacturer’s gutters and fittings are interchangeable

• Some makes are no longer available and will not fit modern equivalent shapes

• Square section has almost twice the capacity of half round section and flow rates are acceptable when laid to the correct manufacturer’s fall

• It can silt up very quickly because of its flat bottom