floor for garden room

[Jupiter01]

I am constructing this type of floor and foundation

I know this image has two joists running next to each other but I am essentially going to have two sections like this, to make up my total floor of 6.5m x 3m. It will be built with 5x2 timbers.

I will initially put 2 screws at each end but then need to fill the other section like this

I can still put 2 screws at this end but how do I get some decent fixing at the other end? Do I angle in the screw, use joist hangers or a different approach?

If I stagger them, the OSB floor wont line up and will cause challenges when screwing.

Thanks in advance.

 

[Tigercubrider]

Can’t you build it with all the long timbers first, then add noggins?
Or as is, but mark the OSB with a chalk line before the first screw.

 

[Jupiter01]

Can’t you build it with all the long timbers first, then add noggins?

That’s what I plan to do but how do I screw the noggin that is in line with the previous one? I’m unclear on that part

 

[Jupiter01]

It’s these noggins here that I’m unclear on.

Once I’ve screwed one of them in from the ends, how do I position and screw the one that follows that on the other side of the long timber. Does it need to be screwed at an angle or something else?

 

[Charlie George]

Just screw at an angle or use hangers, or do as your first picture and fix 2 sections together with screws.

 

[Jupiter01]

Would a couple of angle screws be strong enough?

 

[Charlie George]

Would a couple of angle screws be strong enough?

Couple each side would be better.

 

[Tigercubrider]

Stagger the noggins. That way you get to both ends of each noggin.
A bit of planning, you can line the edges up to cope with the board edges.

 

[Jupiter01]

Stagger the noggins. That way you get to both ends of each noggin.
A bit of planning, you can line the edges up to cope with the board edges.

I did consider that and as you say, the screws are nice and straight forward then. I just don’t understand how the OSB cuts would sit? Would I have to cut a chunk out of the corner of the osb so it sits on the noggin that is set in. Not sure if that even makes sense…

 

[Jupiter01]

Couple each side would be better.

Do I need to pilot hole these or else they will split the wood?

 

[matlob]

You just need to make sure the osb will sit on half the joist all round so the next board sits on the same joist. Not sure what you mean by cutting a chunk from the noggins.

If insulating, make sure the spaces are equal.Use a piece of timber to space rather than measuring and clamping before screwing helps keep in it place. Also once the osb is screwed to the frame the strength will be fine

 

[Jupiter01]

You just need to make sure the osb will sit on half the joist all round so the next board sits on the same joist. Not sure what you mean by cutting a chunk from the noggins.

If the noggins are staggered, osb will sit on half of one noggin but then hang mid air because the noggin further up is set back slightly.

 

[matlob]

Just keep them inline and spaced according to insulation/board size. When the boards are screwed down it will all bind together.

Also, when planning your layout the 5x2s wont be exactly 5x2 so check the specs