Floating Floor Parallel To Joists

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.

Floating floor parallel to joists.

Apart from a few exceptions like sagging joists this is the preferred direction to lay wood floors because it provides the best result aesthetically. Some houses have the shiplap on a 45. The roof is modern or unique such as a single sloped roof flat roof or a unique overhang. 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.

Ceiling joists are usually 2 by 6s or sometimes 2 by 4s if it is an older home. Additional support for the floor joists is achieved by nailing the ends of the joists into headers. If the subfloor is stiff enough there is no reason why solid nail down strip flooring can t be run parallel to the joists. If the joists are at 24 o c.

If the joists are at 19 2 or 16 on centers laying the wood parallel to the joists should not be a problem. Some newer homes have manufactured i beam shaped joists. 3 4 osb is rated for joists at 24 o c. I guess you wouldn t have to lay it parallel but the shiplap has a lot more movement then plywood or osb.

Flooring experts recommend installing flooring boards perpendicular to the floor joists in a house with a plywood subfloor. A floor s framework is made up mostly of wooden joists that run parallel to one another at regular intervals. Section r502 10 of the international residential code states that header joists can be the same size as the floor joists when the header joist span isn t greater than 4 feet but if the header joist span is more than 4 feet you ll need to double the header joist and ensure that it s capable of. With 3 4 subfloor it s best to add another layer.

It could be ok but you are dancing in the danger zone. Installing them parallel creates the possibility that the floor will sag. Floor joists are typically 2 by 8s 2 by 10s or 2 by 12s.