Discover the complete range of half-round gutters developed by SuissePliage — brackets, outlets, downspouts, water...
Latest posts
-
DEV 33 half-round gutter and accessories: a complete guideRead more -
Order custom bent sheet metal online | SuissePliage ConfiguratorRead moreFind out how to order your custom bent sheet metal in 3 minutes with the SuissePliage configurator: 20 profiles,...
-
What is the price of an aluminium coping in Switzerland?Read moreWhat is the price of aluminum coping in Switzerland in 2026? Ranging from CHF 35 to 120 per linear meter depending on...
-
How to Choose the Right Coping Width for Your Parapet?Read moreSeries 150, 200, 250, 300 mm... How to choose the right coping width? This guide explains everything in 5 minutes.
DEV 33 half-round gutter and accessories: a complete guide
Plumbing Guide 2026
Half-round Gutter DEV 33
and its accessories
The DEV 33 half-round gutter is one of the most widely used references in Swiss sheet metal roofing. Designed for roof areas over 80 m², it is installed without soldering and pairs with a complete range of accessories — brackets, outlets, downpipes, water boxes — available in galvanised steel, zinc, aluminium, copper or stainless steel. This guide covers every component, its role and the materials available at SuissePliage.
Half-round gutter DEV 33 — available in galvanised steel, zinc, aluminium, copper and stainless steel.
What does DEV 33 mean?
The number 33 refers to the gutter development, i.e. the width of the metal strip before forming. Once rolled into a semicircle, this 33 cm strip produces a gutter with an opening of approximately 16.5 cm — the ideal size for efficiently draining a large roof area.
The DEV 33 is the bigger sister of the DEV 25. It is particularly suited to chalets, farmhouses, agricultural buildings, villas and apartment buildings with a projected roof area exceeding 80 to 100 m². In Switzerland, it is the standard reference for sheet metal workers on high-rainfall roofs.
?
Technical specifications
Development: 330 mm — Opening: ~165 mm — Overlap between elements: 5 cm in the direction of slope. Minimum recommended slope: 2 mm per metre. Solder-free installation using special gutter sealant.
Five materials, one product line
Every article in the DEV 33 range is available in five materials. The choice depends on your budget, the environment (coastal, industrial, high altitude) and the aesthetic requirements of the building.
Galvanised steel Natural zinc Aluminium Copper Stainless steel
| Material | Estimated lifespan | Key advantages |
|---|---|---|
| Galvanised steel | 20 – 30 years | Cost-effective, robust, easy to work with |
| Natural zinc | 40 – 60 years | Elegant grey patina, 100% recyclable |
| Aluminium | 30 – 50 years | Lightweight, maintenance-free, RAL-coatable |
| Copper | 80 – 100 years | Distinctive green patina, premium appearance |
| Stainless steel | 50 – 80 years | Maximum resistance, aggressive environments |
DEV 33 product range
Here are all the components available at SuissePliage to build a complete DEV 33 half-round drainage system. Every article is available in the five materials listed above.
Half-round gutter DEV 33
Ref. GUT-33 — Core element of the system. Standard length 2 m or 4 m. Bead-and-socket joint, no soldering. Install with a 2 mm/m slope towards the outlet.
Fascia bracket DEV 33 (hanger)
Ref. TIR-33 — Secures the gutter to the fascia board or bargeboard. Fix every 40 cm. Compatible with rafter arms and tile clips.
Fixing bracket DEV 33 (clip)
Ref. BRI-33 — Wall or rafter mounting to hold the gutter at an angle or in support. Ideal for renovation on existing walls.
Downpipe clip Ø100
Ref. COL-100 — Fixes the Ø100 downpipe to the wall. Install every metre. Available with nail (masonry) or screw (cladding).
Downpipe Ø100 — 2 m
Ref. TUY-100 — Cylindrical male/female downpipe, 2 metres. Fits any same-diameter accessory: outlet, bend, sleeve.
Bend Ø100 — 87°
Ref. COU-100 — Connects the downpipe to the wall or redirects it. 87° angle (EN 612 standard). Also available in 45° on request.
Water box 200×200 / outlet Ø100
Ref. BAE-200 — Collects water from a flat roof or valley gutter with no visible channel. Cylindrical outlet Ø100. Surface-mounted installation.
Universal outlet 33 / Ø100
Ref. NAI-33 — Clips directly onto the DEV 33 gutter to connect the Ø100 downpipe. Two clips, sealed with sealant.
Pressed angle DEV 33
Ref. EQU-33 — Joins two gutters at 90°, inside or outside corner. Same connection as straight elements, no soldering.
Clip-on end cap DEV 33
Ref. FON-33 — Closes the end of the gutter. Clips onto the bead. Sealed with special gutter sealant. Also called "stop end".
?
Recommended additional accessories
To complete your installation: expandable leaf guard Ø100 (leaf filter placed inside the outlet), special gutter sealant (sealing all joints), repair sleeve Ø100 (for pipe cuts on site).
Complete DEV 33 accessories range: outlet, 87° bend, downpipe clip, end cap, pressed angle.
Installation order: from ridge to drain
Installing a complete system follows a simple logic — from upstream to downstream. Here are the key steps for a clean and lasting installation:
1
Install fascia brackets
Fix a DEV 33 fascia bracket every 40 cm on the bargeboard, maintaining a slope of 2 mm per metre towards the outlet. Use stainless steel screws for lasting hold.
2
Connect gutter lengths
Slide the gutters together at the bead with a 5 cm overlap in the direction of slope. Apply a bead of gutter sealant at each joint.
3
Fit angles and close ends
At each roof corner, fit the pressed DEV 33 angle. Close any free ends with clip-on end caps. Apply sealant to every joint.
4
Clip the outlet and connect the downpipe
Drill the gutter at the chosen point, fit the universal 33/100 outlet and fold down its clips. Then connect the Ø100 downpipe via an 87° bend if needed.
5
Fix downpipe clips
Fix a Ø100 downpipe clip every metre along the wall. Place the expandable leaf guard in the outlet to protect the downpipe from blockage.
Complete DEV 33 system installation — fascia brackets, gutter connection and Ø100 downpipe fitting.
Who is this for?
For sheet metal workers and roofers
Order all components at once, directly from the office or site. Trade discounts up to -15% are applied automatically to your professional account. Technical data sheets are available for every article to complete your project files.
For private clients and project owners
Replacing a damaged gutter, extending a downpipe or fitting a new system? Order exactly the parts you need, in the material and length of your choice — no minimum order. Delivery throughout Switzerland, typically within 5 to 10 working days.
✅
Made in Switzerland
All DEV 33 articles sold by SuissePliage are manufactured in our Swiss workshop. Quality checked on every part, reliable lead times, delivery throughout Switzerland and Europe.
Discover the DEV 33 gutter range
All articles available in galvanised steel, zinc, aluminium, copper and stainless steel.
Frequently asked questions
Q
What is the difference between DEV 25 and DEV 33?
The DEV 25 suits roof areas up to around 80 m². The DEV 33, with its 16.5 cm opening, is sized for areas over 80–100 m² or with heavy rainfall. When in doubt, the DEV 33 is the safe choice for a Swiss residential property.
Q
Can different materials be mixed in the same installation?
No. It is essential to use the same metal for all elements in contact. Mixing zinc and copper, or aluminium and galvanised steel, causes galvanic corrosion that quickly degrades the parts. The material choice must be consistent throughout the installation.
Q
Do the joints need to be soldered?
No. The entire DEV 33 range is installed without soldering. Connections are made by sliding the bead together, and sealing is achieved with special gutter sealant applied at each joint. This technique greatly simplifies installation, even for non-specialists.
Q
Can a water box replace a conventional gutter?
The 200×200 water box is designed for flat roofs and valleys, where water flows by gravity to a central collection point. It does not replace a half-round gutter on a conventional pitched roof, but often completes the system for extensions or adjoining terraces.
Q
Do you deliver throughout Switzerland?
Yes, SuissePliage delivers throughout Switzerland (French, German and Italian-speaking regions) and to Europe. Shipping costs are calculated by volume and destination at checkout. Manufacturing and dispatch time: 5 to 10 working days.
Posted in:
Guides & Tips
Related posts
-
How to Choose the Right Coping Width for Your Parapet?
Series 150, 200, 250, 300 mm... How to choose the right coping width? This guide explains everything in 5 minutes.Read more
-
What is the price of an aluminium coping in Switzerland?
What is the price of aluminum coping in Switzerland in 2026? Ranging from CHF 35 to 120 per linear meter depending on...Read more
-
Order custom bent sheet metal online | SuissePliage Configurator
Find out how to order your custom bent sheet metal in 3 minutes with the SuissePliage configurator: 20 profiles,...Read more
Leave a comment