Trade supply · own production since 2007
PVC stair treads and risers for the trade.
We manufacture stair renovation material and supply it to the trade only: stair builders, carpentry and fitting companies, interior builders, contractors, shops and resellers. Thirteen colours in stock, cut and shipped from our own workshop in Nijverdal.
Thirteen colours, all from stock
All colours and sizesOrder now and you will have it
within 3 working days
Ordered before 14:00 on a working day. In practice often sooner.
Range
What we make
Four parts. Enough to clad any closed or open staircase.
PVC stair panel
The overlay tread. Goes straight over your existing tread. One panel covers two treads.
See sizes
PVC riser
The upright part. Also in oak plywood, black and white.
See sizes
PVC under panel
Clads the underside of the tread. Only needed on an open staircase.
See sizes
Cover trim U-cap
Finishes the top and back edges cleanly. 2440 mm long.
See sizesThe staircase explained
Tread, riser, under panel or cover trim?
Click a part and you see exactly where it sits. Handy when you want to know quickly what to order.
Our warehouse
We do not have to order anything. It is already on the pallet.
Every standard colour is waiting in Nijverdal. That is why we dare to name a date instead of an estimate.
Why WK
We make it ourselves. That is how we know when it arrives.
No middlemen, no waiting on a factory abroad. Cutting, packing and shipping all happen at one address in Nijverdal. We supply the trade only. Private customers we refer to a fitter in their area.
The year we started building stairs and stair renovation material.
Standard colours, every one of them available from stock.
Working days between your order and your delivery. Our production runs energy neutral.
Stair builders and renovation companies, carpentry, fitting and interior building firms, contractors, shops and resellers. For one it is the material for next week's job, for another a pallet for the shop floor. Either way you get the same colour code and the same dimensions, also when you come back to it six months later. And you speak to the workshop, not to a call centre.
About us
From general carpentry to the staircase
William Kruithof started out on his own in 2007, after years at Van Keulen Interieurbouw. Four years later he picked one speciality: stair renovation. Not because it was easy, but because good material simply was not available anywhere.
So we started making it ourselves. Solid oak parts first, PVC stair treads from 2018 onwards. Today there is a workshop in Nijverdal that runs energy neutral and where every order passes through the same hands.
Frequently asked
What we get asked most
How fast is my stair renovation material delivered?
Order on a working day before 14:00 and your order is with you on site within three working days. In practice it is often sooner, because all standard colours are in stock. The counter at the top of this page works out live which date that is today.
What is the difference between a tread and a riser?
The tread is the horizontal part you walk on. The riser is the vertical part between two treads. On an open staircase there is nothing in between, and you use an under panel to clad the underside of the tread.
How many panels do I need for one staircase?
One PVC stair panel covers two treads. For a staircase with thirteen treads you order seven panels. Not sure? Put the number of treads in the comments field with your order and we will check it for you.
Can private customers order?
No. We supply the trade only: stair builders, carpentry and fitting companies, interior builders, contractors, shops and resellers. A valid VAT number is required to order.
If you are a private customer we are happy to put you in touch with a fitter in your area. Just call or email us.
I run a shop. Can I buy stock?
Yes. For shops and resellers we supply by the pallet and we will think along about which colours are worth stocking. Prices are not published online; call or email for your trade price list.
Get going
Ordering takes three steps
Pick your product, click a colour, fill in your details. No colour codes to remember, no form two screens long. Next time your details are already there. All you need is a valid VAT number.