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

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

roland76 schrieb:
A carpenter has now proposed, for cost reasons, to build the substructure from OSB instead of concrete.

For cost reasons – doesn’t that seem somewhat incompatible with the building, which I recall was not exactly cheap?

I am always a bit skeptical when someone suggests a change that results in their part of a component becoming more extensive. Is this carpenter at least also a staircase builder, or does he see the staircase as just a walk-in cupboard?

---

https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/

Hello 11ant,

well, since the staircase is not visible from below, it wouldn’t matter to me...
Yes, the carpenter is actually very specialized in staircase construction.

How can concrete be replaced by OSB? Concrete would be the load-bearing element, OSB at most an - from an aesthetic perspective - cladding. In the case of OSB, what would serve as the load-bearing structure?

roland76 schrieb:
Well, since the stairs aren’t visible from below, it wouldn’t matter to me...

I always consider the resale or repurposing aspect in every construction project, and you wouldn’t put plastic wheel covers on a Jaguar. Simply because it reduces the value.

roland76 schrieb:
Yes, the carpenter is actually very specialized in stair construction.

I would have associated OSB more with retail or exhibition stand construction.

---

https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/

@77.willo: Here, OSB is the load-bearing element and the cladding is 41mm (1.6 inches) solid oak wood...
@11ant: Well, cheaper doesn’t always mean worse... But I have similar concerns... That’s why I wanted to know if anyone has any practical experience with this...