Hangers 75mm joist 70mm

[Jsmithy]

Hi e everyone,
My joist hangers are 75mm wide but the joist are 70mm. What do I do? Should I pack out with 5 mms plywood so the joist is tight and then nail?
Thanks for help it is very much appreciated.
The joists are 225 x 75mms but obviously only 70mms on measurements.

 

[oldbutnotdead]

I feel your pain- had similar issues with 150 x 50 which were more like 46.
Yes i shimmed mine with skim ply, hasn't fallen down yet
NB If these hangars are for a ceiling, consider routing the underside of the end by 4mm so the plasterboard goes up flat

 

[Jsmithy]

Thanks, I'm on it mate but surely they should make 70mms hangers for regulators timber by now. Unless I bought the wrong ones lol.

 

[johnny2007]

Simpson strong tie fit perfectly.
Have you tried them?

 

[oldbutnotdead]

If you hunt around you'll find hangars that are a better fit- i do wonder whether the cheapo ones are really for CLS rather than regularised.

 

[^woody^]

Just bend speedy hangers and pack HD hangers.

 

[cdbe]

When I did mine I vaguely remember reading that the maximum packing allowable was about 5mm (can't remember where I read it or whether that was per side or in total). I suppose it starts to affect the penetration depth of your twist nails. If you want the "right" sizes try "metro fixings", they have a good range in steps of a few mm. They even sell a 2 part hanger that fits anything:

And before you ask, they do actually make such a thing, it's not just one cut in half.

Although this is one cut in half (I think it was about £2 cheaper than buying the two halves) :