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DEV 33 half-round gutter accessories: installation guide

Posted on: 05/06/2026
Sheet metal guide 2026
Half-round gutter accessories DEV 33
Complete guide: selection & installation from A to Z
3 May 2026
By SuissePliage
Reading time 7 min

Choosing the right accessories for a DEV 33 half-round gutter matters as much as choosing the profile itself. Fascia bracket, clip-on outlet, 90° external angle, reversible stop end, 90° bend, Ø 100 mm downpipe, pipe clip: each part determines the watertightness and lifespan of your half-round gutter system. SuissePliage offers all of these accessories in galvanised steel, natural zinc, aluminium, copper and stainless steel – push-fit installation without soldering, sealed with special gutter silicone.

SuissePliage DEV 33 half-round gutter accessories – fascia bracket, clip-on outlet, 90° angle, reversible stop end, bend and Ø 100 mm pipe clip

Full range of accessories for the DEV 33 Ø 100 mm half-round gutter – natural zinc, aluminium, galvanised steel, copper and stainless steel – available from SuissePliage.

5 materials for your half-round gutter accessories

The golden rule: every half-round gutter accessory must be made of the same metal as the profile. Combining two different metals in the presence of water causes galvanic corrosion that destroys the parts within a few seasons. SuissePliage offers its DEV 33 accessories in five materials, all fully compatible within their own range.

Galvanised steel Natural zinc Aluminium Copper Stainless steel
Material Estimated lifespan Strengths
Galvanised steel 20 – 30 years Economical, tough, easy to work
Natural zinc 40 – 60 years Elegant grey patina, 100 % recyclable
Aluminium 30 – 50 years Light, maintenance-free, RAL coatable
Copper 80 – 100 years Characteristic green patina, prestige
Stainless steel 50 – 80 years Maximum resistance, aggressive environments

The 8 essential accessories for your DEV 33 half-round gutter

A complete DEV 33 half-round gutter system relies on eight key parts. All are available in the five SuissePliage materials and designed for push-fit installation without soldering – each joint is sealed with special gutter silicone.

DEV 33 fascia bracket

Ref. CB-33 – Fixes the half-round gutter to the fascia or eaves board. Fit one every 40 cm. Adjustable for fall so that water flows towards the outlet.

DEV 33 90° external angle

Ref. AE-33 – Joins two lengths of DEV 33 gutter at an external roof corner. Push-fits like two gutter sections, installed without soldering.

DEV 33 90° internal angle

Ref. AI-33 – Joins two lengths of DEV 33 gutter at an internal roof corner. Sealed with special gutter silicone all the way round.

DEV 33 clip-on outlet – Ø 100 mm

Ref. NA-33 – Connects the gutter to the Ø 100 mm downpipe. Fixed with 2 built-in tabs folded over inside the gutter. Cylindrical spigot compatible with Ø 100 mm bends and pipes.

DEV 33 reversible stop end

Ref. FE-33 – Closes the end of the DEV 33 half-round gutter. Reversible model: fits left or right. Sealed with special gutter silicone.

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Ø 100 mm cylindrical 90° bend

Ref. CO-90-100 – Forms the «S» offset between the outlet and the downpipe. Male/female push-fit, no tools or soldering needed. Compatible with all Ø 100 mm accessories.

Ø 100 mm cylindrical downpipe

Ref. TD-100 – Carries rainwater from the outlet down to the ground. Male/female push-fit, standard length 2 m. Compatible with all Ø 100 mm accessories in the range.

Ø 100 mm pipe clip

Ref. CD-100 – Holds the downpipe against the facade. Fit one every metre. Available with a pin (masonry) or a screw, depending on the substrate.

i
SIZING – WHICH DEV FOR WHICH ROOF AREA?

The development (DEV) is the width of the metal strip before forming. DEV 25 → Ø 80 mm: roof areas up to about 80 m². DEV 33 → Ø 100 mm: roofs over 80 m². In Switzerland, DEV 33 is the most common size on detached houses. DEV 25 and DEV 33 accessories are not interchangeable.

Detail of DEV 33 half-round gutter accessories – Ø 100 clip-on outlet, 90° external angle and reversible stop end in natural zinc, SuissePliage

DEV 33 Ø 100 mm clip-on outlet, 90° external angle and reversible stop end – the three essential finishing parts of a half-round gutter system.

How to install a DEV 33 half-round gutter: 5 steps

A DEV 33 half-round gutter is installed by push-fitting, without soldering. Each joint is sealed with special gutter silicone. Following this order ensures a lasting result and proper rainwater drainage.

1

Work out the fall and fit the fascia brackets

Stretch a line from the high point (closed end) to the low point (outlet). Allow a fall of 2 to 5 mm per linear metre towards the outlet. Fix the first bracket at the high point, then the last at the low point, and fill in with a fascia bracket every 40 cm along the line. Screw each bracket home only after checking that the fall is continuous.

2

Fit the sections, angles and stop ends

Lay the gutter lengths in the brackets from the high point towards the outlet. At each joint, the sections push-fit over the bead by about 5 cm – apply special gutter silicone inside the joint before assembling. Fix the 90° external or internal angles at the roof corners in the same way. Finish with the reversible stop ends at both ends.

3

Install the Ø 100 mm clip-on outlet

Position the outlet at the lowest point of the run. Cut the gutter with a Ø 100 mm hole saw. Fit the outlet from outside, then fold the 2 built-in tabs over inside the gutter. Run a bead of special gutter silicone all round the outlet. To choose the right Ø 100 mm downpipe, see the SuissePliage range.

4

Connect the 90° bends and the downpipe

Push the first 90° bend onto the outlet spigot (female end facing down). Measure the distance to the facade and cut a length of pipe to size if needed. Fit the second 90° bend on the facade side so that the downpipe sits against the wall. Run the pipe down to the ground, push-fitting the sections with the male end facing down.

5

Fix the pipe clips and test for leaks

Fit a pipe clip every metre to hold the downpipe against the facade. Check the vertical alignment. Temporarily plug the bottom of the downpipe, fill the gutter and inspect every joint for 5 minutes. No visible leak? The installation is sound.

Installing a DEV 33 half-round gutter in natural zinc – fascia brackets every 40 cm, Ø 100 clip-on outlet and 90° bend – SuissePliage site

Installing a DEV 33 half-round gutter in natural zinc: fascia brackets every 40 cm, Ø 100 mm clip-on outlet and 90° bend – SuissePliage accessories.

Which half-round gutter accessory for your project?

Homeowner renovating

Galvanised steel accessories offer the best value for a first installation or a partial replacement. Aluminium is ideal for Alpine regions: light, maintenance-free, frost-resistant and available with a RAL coated finish.

Professional roofer and sheet metal worker

Natural zinc is the standard on demanding sites: an even grey patina and a lifespan of 40 to 60 years. All SuissePliage accessories are supplied with precise tolerances to make cutting and workshop assembly easier. Stainless steel is recommended for aggressive environments.

Architect and client – premium segment

Copper offers 80 to 100 years of life and a noble green patina, valued on historic buildings and high-end villas. SuissePliage DEV 33 copper accessories ensure a perfect visual match with the gutter profiles.

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COMPATIBILITY AND QUALITY GUARANTEED

All SuissePliage half-round gutter accessories are precision-made and individually checked. Dimensional compatibility is guaranteed across all DEV 33 Ø 100 mm accessories in the range. Installation without soldering using male/female push-fit joints – sealed with special gutter silicone.

Order your DEV 33 half-round gutter accessories

Galvanised steel, zinc, aluminium, copper or stainless steel – instant online quote.

▶ See the accessories

FAQ – DEV 33 half-round gutter accessories

Q
What is the difference between DEV 25 and DEV 33 for a half-round gutter?

The development (DEV) is the width of the metal strip before forming: it determines the gutter opening and its hydraulic capacity. DEV 25 (Ø 80 mm outlet) suits roofs of 35 to 80 m². DEV 33 (Ø 100 mm outlet) is recommended above 80 m² – it is the most common size on detached houses in Switzerland. Note: DEV 25 and DEV 33 accessories are not interchangeable.

Q
Can you mix accessories made of different materials on the same gutter?

No. Contact between two different metals in the presence of water causes galvanic corrosion, which quickly damages both materials. Every accessory must be made of the same metal as the gutter profile. The only exception: stainless steel screws, which are galvanically neutral. To seal the joints, use special gutter silicone only.

Q
How do I work out how many fascia brackets I need?

You need one fascia bracket every 40 cm. To calculate: divide the total gutter length in cm by 40, then add 1. Example: 8 metres = 800 ÷ 40 + 1 = 21 brackets. For a full estimate of every accessory you need, use the online SuissePliage configurator.

Q
Does the reversible stop end fit gutters from other brands?

The SuissePliage reversible stop end is sized for DEV 33 with a 14 mm bead, the most widespread standard in Switzerland. Compatibility with other manufacturers depends on the bead diameter and the exact development. If in doubt, check the dimensions of your existing profile (opening width, bead diameter) before ordering.

Q
Do you deliver gutter accessories throughout Switzerland?

Yes, SuissePliage delivers throughout Switzerland – French, German and Italian-speaking regions – as well as to Europe. Shipping costs are calculated by volume and destination when you order. Get your instant quote online at suissepliage.ch.

half-round gutter accessories DEV 33 half-round gutter DEV 33 fascia bracket Ø 100 clip-on outlet 90° half-round gutter angle reversible stop end 90° downpipe bend Ø 100 natural zinc gutter DEV 33 aluminium gutter DEV 33 copper gutter DEV 33 solder-free gutter installation Swiss sheet metal
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