The factory Naivasha, Kenya
Powder in. One piece out.
Everything we sell is made in our own plant in Naivasha, in moulds from our partner ROTO Group of Slovenia. A tank, a hull and a planter are all made the same way: slowly, whole, in one seamless piece.
Rotational moulding Five steps
Nothing glued. Nothing welded. Nothing joined.
Scroll, and the drawing runs the machine: a mould travels from the loading station to the oven and back, and a 5,000 litre tank is born whole.
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01 · Load
Powder into the mould.
Polyethylene powder, already in the colour of the finished piece, is measured into a hollow metal mould, and the mould is closed.
The colour is in the material itself, so there is no paint to peel.
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02 · Heat
Heat, and turn.
The mould moves into the oven and turns slowly on two axes. The powder melts and coats every inside wall evenly.
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03 · Cool
Cool, still turning.
The mould keeps turning as it cools, so the polyethylene sets and holds its shape.
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04 · Open
One piece comes out.
The mould opens and the piece is lifted out: one complete, hollow, seamless piece, with no assembly.
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05 · Finish
Trimmed, fitted, checked.
The piece is trimmed, accessories are fitted where required, and quality checks are completed before it leaves.
Every piece is inspected before it is allowed to carry our name.
A schematic drawing of the process, not a plan of our plant.
Why this process
Why the slow way lasts.
One mould, turning slowly, makes the whole shape at once. What that gives you, in six plain points.
- 01
An even wall
Turning the mould spreads the melted polyethylene evenly over every inside surface: a consistent wall thickness and finish, batch after batch. On the 5,000 L tank the wall is 8 to 14 mm.
- 02
No joint to fail
Rotomoulding makes a large hollow shape as one closed piece with no assembly. No joints, no leaks.
- 03
Nothing to rust
Polyethylene does not rust or corrode, and one seamless piece leaves nothing to rust.
- 04
Made to outlast the sun
UV and frost stabilised polyethylene. No cracking, no fading, no annual replacement cost.
- 05
Colour all the way through
The colour is in the polyethylene itself, mixed into the powder before moulding, so there is no paint to peel.
- 06
Made to come back
Polyethylene is recyclable. At the end of its life we take a Kewat product back and pay you its value as recycled material.
Made here
What leaves Naivasha.
Underground water and septic tanks, Wimbi boats, a canoe and kayaks, planters, wheelbarrows, tube trays and round tubs. Different shapes; the same mould, heat and patience.
In partnership with ROTO Group, Slovenia
Where Kenyan craft meets European precision.
Kewat is the exclusive partner of ROTO Group in Kenya and East Africa. ROTO supplies the moulds and the rotomoulding know-how; we run them in our own plant in Naivasha and make everything locally.
ROTO is a family-owned company in Murska Sobota, Slovenia. It began in 1974 as a workshop and has carried the ROTO name since 1989. Our boats are ROTO designs made in Kenya: the Hydra 450, the LOL kayaks and the Canadier canoe come from ROTO's nautical line.
We sell only the products we have moulds for; other ROTO products cannot be ordered through Kewat.
ROTO brings
- The moulds
- The rotomoulding know-how
- The boat designs
Kewat brings
- Our own plant in Naivasha
- Kenyan hands, for the way Africa really lives
- Every piece made locally, and checked before it leaves
Finishing and checks
Nothing leaves until it has earned the Kewat name.
Out of the mould, every piece is trimmed, accessories are fitted where required, and quality checks are completed before dispatch. Every piece is inspected before it is allowed to carry our name.
For Wimbi boats there is paper to go with it: our boat sales terms state "KEBS, NEMA and KMA approved", and we keep the assessments, statements and reports for each craft on file and send the set for your boat on request.
Most things are made to be replaced. Ours are made to be passed on.
For business
A part of your own, moulded in one piece.
We make custom industrial rotomoulded parts for business customers, by quotation. Tell us what the part is for, its rough size and how many you need; our team comes back to you.
Questions about the factory
What is rotomoulding?
Polyethylene powder is loaded into a hollow mould, which turns slowly on two axes in an oven. The powder melts and coats the walls evenly, cools, and comes out as one seamless hollow piece.
Who is ROTO?
ROTO Group of Slovenia, a family-owned company and Kewat's exclusive technology partner. Kewat makes everything locally in ROTO moulds.
Can you make something custom?
Yes, custom industrial rotomoulded parts for business customers, by quotation.
Can I order other ROTO products through Kewat?
No. Kewat sells only the products it has moulds for.
Made in Kenya. Made whole.