If you have an older house with a shiplap floor the shiplap is perpendicular to the joists so the flooring is parallel to the joists.
Floating floor parallel to joists.
It could be ok but you are dancing in the danger zone.
I guess you wouldn t have to lay it parallel but the shiplap has a lot more movement then plywood or osb.
3 4 osb is rated for joists at 24 o c.
With 3 4 subfloor it s best to add another layer.
A flooring contractor howard brickman responds.
Ceiling joists are usually 2 by 6s or sometimes 2 by 4s if it is an older home.
First renail the existing plywood subfloor so that the old nails are tight and add new nails to achieve a maximum nail spacing of 6 inches.
Flooring experts recommend installing flooring boards perpendicular to the floor joists in a house with a plywood subfloor.
Some newer homes have manufactured i beam shaped joists.
The floor joists may run parallel to the short dimension at the floor level but at the roof level the short dimension is the opposite direction.
A floor s framework is made up mostly of wooden joists that run parallel to one another at regular intervals.
If the joists are at 24 o c.
The roof is modern or unique such as a single sloped roof flat roof or a unique overhang.
If the joists are at 19 2 or 16 on centers laying the wood parallel to the joists should not be a problem.
Floor joists are typically 2 by 8s 2 by 10s or 2 by 12s.
The most common way to lay install hardwood flooring is by aligning the planks parallel to the longest wall or run in the installation.
Installing them parallel creates the possibility that the floor will sag.
Additional support for the floor joists is achieved by nailing the ends of the joists into headers.
Some houses have the shiplap on a 45.