Replace damaged joist

[Opara]

The initial message was deleted from this topic on 17 September 2017 at 15:39

[Arthur Jackson]

How are you holding up the end of that joist that is parallel to the wall you're fixing to? It looks like you are only picking up that noggin.

[Cogcog]

The joist end needs to rest on or in something solid, I would not depend upon the strength only of noggins.

I repaired or replaced a series of joist ends last year by soaking what was left of the joist end in borax(?) and then using stainless steel bolts to bolt new treated timber onto the side of the old timber, overlapting it by about 60cm. I then painted it all thickly in tar and wrapped it in DPC.

The alternative is to use a joist repair kit which means taking out the joist end and splicing in a new joist end with the kit which is more expensive. I was quoted £100 a joist end with splicing kits but I I did all 10 joists for £100.

You could screw joist hangers to the walls and drop the new timber in them?

[Opara]

It would be supported by both the noggin and by being screwed into the wood(Shown in blue on the diagram)that has been attached to the outer wall.

I personally don't think it's a good idea especially as it would have a heavy shower basin on top, but it's my brother who's planning it and i'm trying to convince him why it's a bad idea.

[shimmey69]

Would not advise doing it!!!

Simple answer is to replace like for like so replace rotten timber with other timbersunk into wall and then reinforce the joist by over lapping another length of joist timber over the join.