Roof soffit with PREFA gutter, gutter outlet and downpipe in anthracite with PREFA Siding.X façade in patina grey

Half-round gutter

Reliable roof drainage: the PREFA aluminium gutters are extremely resistant and do not release any harmful heavy metals.

+10
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PREFA gutters have been a proven aluminium product for years, and impress with their well-thought-out, detailed technical solutions. With the half-round gutter and the PREFA downpipe, rainwater is safely drained off your (PREFA) roof.

PREFA provides you with a colour-coordinated all-in-one gutter system with all accessory products. PREFA gutters are produced from colour-coated aluminium coils. The basic material in this case are alloys according to EN 573-3. Thanks to the proven surface treatment, they remain functional and attractive even after many years.

The PREFA half-round gutter is available in 4 dimensions and in 3 m or 6 m length and complies with EN 612.

Close-up of PREFA roof tile R.16 with snow guards, gutter and downpipe in black P.10 incl. lightning protection and a vertical wooden façade

Advantages of PREFA half-round gutter

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Resistant

Made of coated aluminium produced in the coil coating process, which means that the coating layer remains malleable.

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Free of heavy metals

Aluminium does not release harmful heavy metals.

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Rustproof

Corrosion-free and durable thanks to aluminium

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40-year guarantee

by tested original quality on material and P.10 colours

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Resistant

Made of coated aluminium produced in the coil coating process, which means that the coating layer remains malleable.

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Free of heavy metals

Aluminium does not release harmful heavy metals.

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Rustproof

Corrosion-free and durable thanks to aluminium

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40-year guarantee

by tested original quality on material and P.10 colours

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Continuously temperature-resistant

from -30°C to +80°C

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For a wide range of applications

Thanks to numerous colours in the range and four dimensions or two lengths, PREFA gutters are suitable for all roof coverings/pitched roofs (except copper roofs).

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Wide range of gutter accessories

All-in-one system from gutter brackets to gutter outlets – technically and colourfully matched to our roof and façade systems

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Continuously temperature-resistant

from -30°C to +80°C

Icon for advantages

For a wide range of applications

Thanks to numerous colours in the range and four dimensions or two lengths, PREFA gutters are suitable for all roof coverings/pitched roofs (except copper roofs).

Icon for advantages

Wide range of gutter accessories

All-in-one system from gutter brackets to gutter outlets – technically and colourfully matched to our roof and façade systems

Good for the environment

The PREFA aluminium drainage system is the best choice from an ecological point of view too. This is because aluminium does not release harmful heavy metal ions into the sewage water when gutters and pipes are constantly flushed out with rainwater, as is the case with conventional materials.

Think about your gutter after a storm or especially in autumn/winter.: Tip from the experts:

In autumn, but also after strong winds, rain or hail, leaves and branches may block the gutter. As a result, water can no longer drain off and may thus overflow. The accumulated water can also freeze in winter and damage the gutter and pipe. In any case, the rain barrel should be emptied and the rainwater collector should be closed and sealed with the corresponding plug in autumn to prevent frost damage.

Gutter with a lot of autumn leaves, clean clogged gutters

Tip from the experts: Use rainwater sensibly: Also save money and resources in the garden.

The valuable rainwater does not have to seep away unused or be fed directly into the sewage system, as it can also be used as lime-free irrigation water for the garden. The PREFA water collector or downpipe cleanout is used for this purpose: they divert the rainwater into the rain barrel.

Colour range of the PREFA half-round gutter

The PREFA half-round gutter is available in the classic standard colours to match the roof and façade elements. The colour range in P.10 quality is constantly being expanded and adapted.

The P.10 finish is a high-quality and malleable lacquer coating that does not flake off, thus there is no need for tiresome repainting or touching up. The roof drainage is part of the PREFA all-in-one system made of aluminium and therefore fits perfectly with the PREFA roof and façade systems, both visually and functionally.

Color overview (14)

Color

Code

~ RAL

250 | 280

333

400

01 Braun

P.10 brown

7013

02 Anthrazit

P.10 anthracite

7016

03 Schwarz

P.10 black

9005

07 Hellgrau

P.10 light grey

7005

10 Prefaweiß

P.10 prefa white

9002

11 Nussbraun

P.10 nut brown

8019

PREFA dunkelgrau ähnlich DB 703 oder RAL 7043

P.10 dark grey

7043

04 Ziegelrot

brick red

8004

05 Oxydrot

oxide red

3009

06 Moosgrün

moss green

6005

08 Zinkgrau

zinc grey

7030

12 Silbermetallic

metallic silver

9006

13 naturblank

plain aluminium

47 Patina grau

patina grey

7042

Notes

  • The RAL values stated are merely approximate values (~), some of which may differ vastly from the original PREFA color and, under certain circumstances, may not reflect the subjective perception of the color. 
  • Above all for color quality P.10, it is almost impossible to define values due to the surface structure.
  • Plain aluminium: The guarantee does not cover surface appearance alterations caused by processing and environmental influences. Follow the instructions.
  • Metallic colors may vary in shade.
  • To identify exact colors for complementary components please consult original samples.

Be inspired by the projects already implemented with the PREFA half-round gutter.

With the roof drainage system from PREFA, elegant tone-in-tone solutions can be implemented or colour accents can be deliberately set. Here, we have put together some reference properties for inspiration.

The square gutter: You might also like the following.

The square alternative to the half-round gutter is the PREFA box gutter. It is also available in 4 dimensions and in 2 lengths of 3 m and 6m.

Steep roof surface covered with the roof tile R.16 with square PREFA box gutter with gutter outlet and downpipe in anthracite

Technical information

The coating layer is malleable and resistant to general chemicals and weather conditions. Coil coating production is accompanied by strict quality controls.

Temperature resistance

Between –30° and +80°

Quality controls

layer thickness, gloss level, shade, paint hardness, paint adhesion, paint bonding, deformation resistance, paint hardening

Gutter dimensions (piece lengths: 3 m and 6 m)

250, 280, 333, 400

Aluminium downpipe (piece length: 3 m)

Ø 60 mm, Ø 80 mm, Ø 100 mm, Ø 120 mm, Ø 150 mm

Planning & Application

Our installers and architects can download specification documents for the PREFA half-round gutter here. 

Accessories for the PREFA half-round gutter

If you opt for the  PREFA gutter system, you will get a cleverly designed all-in-one system with 100% original accessories. The colours of all accessory products are perfectly matched with the PREFA roof and façade systems. The PREFA gutter outlet creates a perfect transition to the PREFA downpipe, whereby the rainwater is safely directed from the roof towards the ground.

The PREFA overbar

For additional bracing of the gutters, and especially in snowy regions, PREFA overbars can be mounted between the gutter brackets, which are mounted on the rafters.

Swiss cabin covered with PREFA roof tiles and with the PREFA half-round gutter, which is attached with the overbar.

PREFA gutter in light grey reinforced with an overbar, in combination with FX. 12 roof panel

Gutter bracket

250, 280, 333, 400

Upright gutter bracket

280, 333, 400

Gutter bracket (Switzerland)

333

Fascia bracket

250, 280, 333

Gutter end cap

250, 280, 333, 400; can be used on both sides

Radius end cap

333; ca be used on both sides

Adhesive end cap

333; can be used on both sides

Gutter corner 90° (internal)

250, 280, 333, 400

Gutter corner 90° (internal)

250, 280, 333, 400

Gutter outlet

250, 280, 333, 400

Diagonal outlet

250, 280, 333, 400; can be used on both sides

Gutter expansion joint with bead and cover plate

250, 280, 333, 400

Gutter expansion joint without bead or cover plate

250, 280, 333, 400

Reinforcement hanger for aluminium gutter

250, 280, 333, 400

Eaves drip edge

230 × 2.000 × 0,70 mm