Plastic ponds – made to measure
Your pond.
Built to measure,
seamlessly watertight
Whether a garden pond, natural swimming pond or koi pond – we build your basin seamlessly welded, to your plan and your dimensions. Swiss craftsmanship, durable and liner-free.
How much does a made-to-measure plastic pond cost?
A made-to-measure plastic pond is quoted individually by shape, size and finish – there is no fixed price. Semadeni builds garden, swimming and koi ponds seamlessly welded from PE/PP with Swiss craftsmanship. For a binding quote, get in touch with your dimensions or your plan.
Why a pond made to measure
A water basin that fits your garden precisely – and stays that way.
Seamless & 100 % watertight
Welded from plastic sheets – no liner, no seam, no leaching.
Built to your plan
Round, angular, multi-level, with planting zones: made exactly to your plan or your dimensions. What is feasible in shape and size we clarify before quoting.
UV-, frost- & weather-resistant
Outdoors year-round, dimensionally stable in heat and frost. Robust against roots and mechanical loads.
Swiss craftsmanship
Engineered and manufactured in Ostermundigen – with long-standing plastics-processing expertise.
Inspiration
The right shape for every water dream
Garden pond
Natural basins with planting zones and steps.
Swimming pond
Large, walk-in basins for the joy of bathing.
Koi pond
Deep basins with filter and viewing zones.
Water features & fountains
Basins and runs for terrace and courtyard.
Raised pond & terrace
Elevated basins, even on roofs and balconies.
Your idea?
Bring a sketch or a photo – we'll turn it into a watertight basin.
Discuss your ideaReferences
Ponds we have built – five projects in detail
Every basin is a one-off. Here are five we built – starting point, solution and pictures of the finished garden.
Ponds Made to MeasureA Pool for Koi CarpAn L-shaped natural pool for breeding koi carp – the centrepiece of a garden in western Switzerland since 2018.View referencePonds Made to MeasureA Near-Natural Spectacle
Ponds Made to MeasureOn the Green Meadow
Ponds Made to MeasureSecret Garden
Ponds Made to Measure170-Year-Old Farmhouse Enhanced with a Plastic PondHow your pond takes shape
From the first sketch to a watertight basin.
- 01
Enquiry & feasibility
You send a sketch, plan or dimensions – we check what can be seamlessly welded from it.
- 02
Design
A precise construction drawing with planting steps, penetrations and connections.
- 03
Welding
Seamless fabrication: plastic sheets are welded watertight in our workshop.
- 04
Delivery & installation
On-time delivery across Switzerland – installed by you or your landscaper.
Material & technique
Welded, not glued – the watertight build.
Your basin is made from food-safe PE/PP sheets, seamlessly welded in our plastics workshop. The result is a monolithic, root-proof and dimensionally stable tank – no liner, no glued seams.
- PE & PP materials – recyclable
- Seamless welding, no liner
- Frost-, UV- and root-resistant
For landscapers & garden builders
Your partner for project pond basins.
You plan and build – we supply the watertight, made-to-measure basin. With conditions, documents and lead times that fit your construction schedule.
Project & resale conditions
Tiered conditions for trade partners and project work.
Planning & design support
We support feasibility and construction – based on your dimensions and plans.
Technical drawings & data sheets
Dimensioned drawings, material data and evidence for tender and execution.
Samples & material proofs
Material and colour samples for client presentation.
On-time delivery
Plannable delivery dates, Switzerland-wide – matched to your schedule.
Personal contact
One fixed contact for project, quote and questions.
Frequently asked questions about ponds made to measure
How durable is a plastic pond?
Welded PE/PP basins are seamless, UV- and frost-resistant and durable – with no liner replacement and no washing-out of seams. We do not promise a lifetime in years; it depends on installation, location and use.
Which shapes and sizes are possible?
Round, angular, multi-level or with planting zones – we build exactly to your plan or your dimensions. Not every shape and size is feasible; what is possible we clarify before quoting.
Do I install the pond myself or does a landscaper do it?
Both are possible: we deliver the finished, watertight basin throughout Switzerland. Installation is done by you, your landscaper or a specialist firm.
Do you work with landscape gardeners?
Yes. For landscaping and specialist firms we offer trade conditions, planning and design support and technical documentation for execution.
Private customers
A dream pond in mind?
Send us a sketch, photos or your desired dimensions – we'll get back to you with a first assessment.
Landscapers & trade
A basin for your next project?
Conditions, planning support and technical documents for your installation – straight from the manufacturer.
