The hopper is impressive with its modern and stylish shape. The upper edge is no longer closed with a bead, but with a smooth folded edge. The hopper is innovatively manufactured with no soldered seam.... more

Design hopper

Nominal size
80, 87, 100, 120
Materials

Not available in all sizes

In this version, the design hopper can be mounted directly on the wall - no more need for a swan neck. The downpipe can thus be directly attached at a normal distance to the brickwork. This is visually flattering and saves on costs... more

Design hopper, eccentric

Nominal size
80, 100, 120
Materials

Not available in all sizes

... more

Nominal size
76, 80, 87, 100, 120
Materials

Not available in all sizes

The Flat roof hopper for safe drainage on flat roofs. With inspection cover and large overflow. A special highlight is the variable rear side: The position, shape and size of the pipe cut-out can be freely selected. The TPE seal is available separately for the rear pipe connection.... more

Flat roof hopper without inflow

Nominal size
100
Materials

Not available in all sizes

The hopper for safe roof drainage on the flat roof thanks to the inspection cover and large overflow pipe. Special highlights include the pre-punched inflow opening and the pre-mounted seal.... more

Flat roof hopper with inflow

Nominal size
75/100, 100/100, 110/100
Materials

Not available in all sizes

A modern form, reliable functionality and a variable rear side: The small flat-roof hopper convinces with its clear form and simple elegance. A special highlight is the variable rear side: The position, shape and size of the pipe cut-out can be freely selected. The TPE seal is available separately for the rear pipe connection.... more

Flat roof hopper without inflow

Nominal size
100
Materials

Not available in all sizes

A modern form, reliable functionality and a variable rear side: The small flat-roof hopper convinces with its clear form and simple elegance. A special highlight is the pre-punched inflow opening, as well as the pre-mounted TPE seal.... more

Small flat-roof hopper with inlet

Nominal size
75/100, 100/100, 110/100
Materials

Not available in all sizes

The Flat roof hopper for safe drainage on flat roofs. Special highlights include the pre-punched inflow opening and the pre-mounted seal.... more

Flat roof hopper, cubic with inflow

Nominal size
75/100, 100/100, 110/100
Materials

Not available in all sizes

The cubic hopper for safe drainage on flat roofs. A special highlight is the variable rear side: The position, shape and size of the pipe cut-out can be freely selected. The TPE seal is available separately for the rear pipe connection.... more

Flat roof hopper, cubic without inflow

Nominal size
80, 100
Materials

Not available in all sizes

The flat-roof hopper is ideal for nestling against the façade with its half round shape and interacts with a round downpipe to create a harmonious appearance. The TPE seal is available separately for the rear pipe connection, the position, shape and size of which can be freely selected.... more

Flat roof hopper, half round without inflow

Nominal size
80, 100
Materials

Not available in all sizes

Precise, leak-proof, and with lasting value - the cube-shaped hopper, fully made by machine, is ideally suited for classical architecture thanks to its traditional look. The lack of joint enhances the collector’s visual appearance, and allows for colour matching with the roof drainage system by means of a powder coating... more

Hopper, cubic

Nominal size
80, 87, 100, 120, 150
Materials

Not available in all sizes

In this version, the cubic hopper can be mounted directly on the wall - no more need for a swan neck. The downpipe can thus be directly attached at a normal distance to the brickwork. This is visually flattering and saves on costs... more

Hopper, cubic eccentric

Nominal size
80, 100, 120
Materials

Not available in all sizes

Hopper, cubic eccentric with overflow pipe

Nominal size
80, 100, 120
Materials

Not available in all sizes

The hopper is the connecting piece between gutter and downpipe, and is specially used on roofs with high water inflow. This guarantees fast, unhindered water drainage into the rain downpipe. It’s primarily used in classical architecture due to its square shape.... more

Hopper, square

Nominal size
76, 80, 87, 100, 120, 150
Materials

Not available in all sizes

Hopper, long

Nominal size
76, 80, 87, 100, 120
Materials

Not available in all sizes

The hopper is the connecting piece between gutter and downpipe, and is specially used on roofs with high water inflow. This guarantees fast, unhindered water drainage into the rain downpipe. It’s primarily used in traditional architecture due to its stabilised form.... more

Hopper, stabilised

Nominal size
76, 80, 87, 100, 120
Materials

Not available in all sizes

Hopper, conical

Nominal size
80, 87, 100, 120
Materials

Not available in all sizes

The hopper is the connecting piece between the flat roof connection and downpipe. This guarantees fast, unhindered water drainage into the rain downpipe.... more

Hopper, conical small

Nominal size
76, 80, 87, 100
Materials

Not available in all sizes

The hopper is the connecting piece between the flat roof connection and downpipe. This guarantees fast, unhindered water drainage into the rain downpipe. Its geometry also allows for connection to gutters with a nominal size up to 333.... more

Hopper, hexagonal

Nominal size
100, 120
Materials

Not available in all sizes

The hopper is the connecting piece between the roof gutter and downpipe. This guarantees fast, unhindered water drainage into the rain downpipe. Its geometry also allows for connection to gutters with a nominal size up to 400. It is used for large flow rates in interior corners. Gutters and hollow moulding are safely and reliably drained.... more

Hopper, interior corner

Nominal size
100, 120
Materials

Not available in all sizes

Hopper flush - long

Nominal size
76, 80, 87, 100, 120
Materials

Not available in all sizes

Hopper, flush - angular with overflow

Nominal size
76, 80, 87, 100
Materials

Not available in all sizes

The hopper is the connecting piece between the flat roof connection and downpipe. This guarantees fast, unhindered water drainage into the rain downpipe. ... more

Hopper flush - half round

Nominal size
76, 80, 87, 100
Materials

Not available in all sizes

The hopper is the connecting piece between gutter and downpipe, and is specially used on roofs with high water inflow. This guarantees fast, unhindered water drainage into the rain downpipe. ... more

Hopper, funnel shape cylindrical

Nominal size
76, 80, 87, 100
Materials

Not available in all sizes

The hopper is the connecting piece between gutter and downpipe, and is specially used on roofs with high water inflow. This guarantees fast, unhindered water drainage into the rain downpipe. ... more

Hopper round - conical

Nominal size
80, 87, 100
Materials

Not available in all sizes

GRÖMO hopper – Installs quickly and securely.

The point is in the box.

A hopper prevents the water from overshooting the nozzle at the end of a long gutter. Hoppers are actually required at a gradient of more than 2%. They generally result in the pipes filling up more, and thus better discharge values than outlets. When used with external gutters, the gutter can be assessed like an inboard one. But because the work involved in calculation is quite high, they are usually just used for incoming valleys after a subjectively assessed calculation. Or simply for optical reasons, without any special hydraulic measurement. They should be selected at a size big enough to perform maintenance work without problems, even on the lower rainwater downpipe connector.

Depending on hopper selection, it may be attached on the pitched roof or flat roof, and installed on the gutter or on the wall

The hoppers are available in different designs: modern or classic, tapered in or out, high or low, rectangular or round, square or rectangular, centric or eccentric - the possibilities are practically endless.

Tight on the wall.

While common sealing options for attic penetration require high effort for installation, the new GRÖMO TPE seal is quick and easy to install thanks to the precisely delineated clamping area. Their reliable sealing function also prevents damage to the structure by back-flowing water of the Attika drain pipe and duch splash in heavy rain events. The GRÖMO TPE seal scores points with its flexible material properties. So the seal profile can be custom cut according to requirements, and used with materials between 0.5 and about 2.0 mm thick.

You can find a detailed description of assembly in the in-depth installation instructions here on our homepage.

The wet must go into the square.

The flat roof hopper shows what it can do. The new shape with reduced depth is deliberately different from the earlier hopper models. The inspection cover and large overflow ensure safe drainage on the roof. It serves as an overflow pipe for blocked downpipes and is not comparable to emergency overflows for flat roofs. This has to be planned separately according to flat roof guidelines and calculated as well as designed.

Special highlights are the pre-punched intake opening (NG 75/NG 100/NG110) and the pre-mounted seal. Where it previously had to be tediously cut and adjusted, the pipe can now easily be inserted through the prepared inflow opening and the rainwater hopper mounted directly on the wall. The flat roof hopper is available in material qualities zinc, copper, and galvanized steel, as well as an option without intake opening.

Caught in design.

The designer hopper’s modern and stylish shape is impressive. The upper edge no longer finishes in a bead, but with a soft fold. All connections are also glued and tox cold welded. The deep-drawn, two-piece outlet makes a real eye-catcher that drains water out of the hopper. This design incorporates the styling of current standards in architecture and provides first-class stability. All this together makes the hopper the perfect choice for buildings with modern designs, as well as for public office and administrative buildings, production facilities, and even for single homes and apartment buildings.

Pretty special.

Both sturdy and elegant: GRÖMO custom solutions not only work perfectly, but also look good doing it. No matter what material you choose, we focus on the aesthetic along with the engineering. And the result is impressive. This is no less apparent in our hoppers, created in the factory. They can be made using all five metals, and allow water to drain unhindered and quickly into the downpipes. They are available in different shapes: tapered in or out, high or low, rectangular or round, square or angular. Just send us your request, we’ll take care of the rest.