Should I be worried about these joist hangers?

[PASUK]

Hi

I have started pulling up the flooring in one of the bedrooms which is part of an extension which was built in the property a few years back.

I don't have much experience with these things but I did notice that the floor joists are attached using joist hangers and and I'm not sure if this looks right. The bedroom will have the usual amount of weight that these will need to support, wardrobe, bed, kids and so on...

These have been in placed for at least a few years, prior owners of the property did the extension.
We haven't had any major issues to date. We have seen cracks in the ceiling of the room below, nothing too serious but they do line up along with where the joist hangers are.

//media.diynot.com/216000_215220_81613_30994935_thumb.jpg
//media.diynot.com/216000_215220_81614_96806564_thumb.jpg

Untitled

• PASUK
• 24 Aug 2014
• 1

Untitled

• PASUK
• 24 Aug 2014
• 1

Any opinions on whether this looks ok? Is this a typical way of attaching the joists?
At the very least I would have thought the top of the hangers should fold over and above the main wood beams and screwed in?
Any ideas on how I would reinforce without any major re-work.

Thanks

 

[xr4x4]

They are supposed to be wrapped over the joist and nailed with twist nails.

 

[PASUK]

They are supposed to be wrapped over the joist and nailed with twist nails.

OK thanks.

So no one has said these should not be used so I assume that joist hangers are ok method to do extensions for bedrooms like this.

Thanks

 

[xr4x4]

Yes, normal but not installed correctly.

 

[AronSearle]

I'll have to add those pictures to my "stupid things i've seen" folder.

 

[garyo]

as XR says... they're not fitted correctly While you have the floorboards up bend them over the other way and square twist nail them in to the top of the joist.

The square twist nails have pretty meaty heads though so have a plan ready in case your floorboards don't want to sit down nicely afterwards.

 

[tony1851]

FWIW, my guess is that they've used standard plasterboard nails instead of twist nails.

However, if there are at least 3 nails each side (ie a total of 6 supporting each hanger) and assuming the span of each joist is not more than around 4m, then the connection will easily support domestic loading.

Having said that, bending the tabs over the top and putting additional nails in will give extra strength.

 

[theprinceofdarkness]

it would be nice if you could relieve the area with a router, else your floor boards will squeak (for ever). from memory the joist hanger manufacturers, don't put holes in their products for fun, they ALL should have a fixing in them. Decent joist hanger manufacturers, actually labelled each hole with the size and type of fixing it should have.
Frank

 

[Nige F]

Hi


These have been in placed for at least a few years, prior owners of the property did the extension.

Any opinions on whether this looks ok? Is this a typical way of attaching the joists?


Thanks

To me it looks fine But there are so many naysayers that you could mock up a replica of whats been done with some 6x2 in your garden then try and force the buggers apart with sledgehammer/ wrecking bar etc.