ᐅ Staircase with OSB Substructure Instead of Concrete – More Cost-Effective?

Created on: 5 Feb 2018 20:58
R
roland76
Hello everyone,

For our house, I initially planned a concrete staircase with 40mm (1.6 inches) solid wood treads.

A carpenter has now suggested, for cost reasons, to build the substructure from OSB instead of concrete.

Does anyone have experience with OSB boards regarding noise, footstep sound, durability, etc.?

Attached is a picture showing roughly how the staircase is supposed to look (under the stairs there will be a storage room for vacuum cleaners, etc.).

Regards, roland76

3D-Rendering eines offenen Treppenhauses mit Holztreppen, Geländern und Fenstern
77.willo6 Feb 2018 22:49
It is more likely that the oak is the load-bearing element and the OSB is the top covering. OSB is a type of chipboard, and under normal circumstances, you cannot build a staircase from it. Are you sure that such a staircase will be cheaper than a concrete staircase?
11ant7 Feb 2018 00:43
roland76 schrieb:
Well, cheaper doesn’t always mean worse...

I wasn’t aiming for an objective “worse” – from a buyer’s perspective, it’s enough if something appears to be of slightly lower quality to count as a drawback. A concrete staircase is considered the “recognized state of the art,” while a storage room with a walkable top is not.

As I said, if the stair builder suggested an alternative, I would consider it – but when the stair installer says, “Let me also be the stair builder,” I’m skeptical. Then I think that gaining this additional manufacturing scope benefits them more than the change in design benefits me.
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W
Wickie
9 Feb 2018 08:23
Our concrete staircase cost a net 1,700 EUR. Since it will remain untreated, our carpenter made a temporary cover for it out of OSB. Cost: 400 EUR.

The purpose was only to create a COVERING without any special requirements regarding load-bearing capacity or anything else.

You would still have to add the oak surface finishes on top anyway.
So how is it supposed to get any cheaper?

Besides, in my opinion, the staircase may be inexpensive but it will also look cheap!