partition wall

[stevie12345]

Hi I've been in contact with building control as i.'m building a partition wall for a new ensuite and so need to complete a building notice. They said that the wall must not be built on the floorboards but must be perpendicular to joists or a double joist installed. This is fine as it is running across the floor joists, however does that mean I can build it on the floorboards and nail through them to the joists below or that I need to remove floorboards and nail the wall directly to the joist before trimming and replacing boards?

Thanks

 

[Blagard]

Yes OK on the Floor boards

Put a sole plate down on the boards first see link below

http://www.british-gypsum.com/~/med...WHITE-BOOK-Non-Loadbearing-Timber-Stud-11.pdf

 

[wrightwoodwork]

If you can find a stud or noggings you can certainly fix to or failing that you can use a fixing like Spot driva plus they are rated at 12kgs per fix up to an ultimate load of 60kg are used for kitchen cabinets. There is others do.t go for the Attic fixing go for the metal fixings

 

[wrightwoodwork]

Ignore above post posted in wrong bit

 

[noseall]

You may also need to pop into the loft and fix a couple of nogg's if you are between ceiling joists and not across 'em.

 

[tony1851]

They said that the wall must not be built on the floorboards but must be perpendicular to joists or a double joist installed.

Building Inspectors tell people anything, in an effort to make the job more difficult.

 

[wrightwoodwork]

Exactly all non load bearing wall are built off the floor it's only load bearing wall that are not built off the floor. If the wall run at 90 degrees to the joists then then fix through the floor into the joist. Or if the stud runs Parallel to the joist simply fix noggings every 600mm below the flooring and put the pieces of flooring back in and fix the stud in place. The only thing you can not do is build the stud between 2 joist of the floor with no support you either have to but in a double joist bow the floor or fix noggings below the floor that's it

 

[tony1851]

The only thing you can not do is build the stud between 2 joist of the floor with no support

A non-loadbearing partition can be built off the floor boards parallel to and mid-way between joists.

Agreed, inspectors don't like it, but they can never say why!

If the boards are t&g, at least 3/4" thick, and the joists are 15-16" apart, it can be proved structurally that the boarding will support a plasterboard & stud partition.

 

[catlad]

You build your wall and then some plumber with his cordless circular saw comes along and slices through your floor boards or electrician for that matter and then it can undermine the stud wall.

 

[tony1851]

You build your wall and then some plumber with his cordless circular saw comes along and slices through your floor boards or electrician for that matter and then it can undermine the stud wall.

Perfectly correct.
But he'd just be a dim plumber/sparks if he didn't check the nailing pattern, and it would not invalidate the structural premise.