Damp joist

[ottosump]

Hello group, we often experienced a musty smell when opening the shower room door, eventually it got worse so I ended up removing the cubicle and tray, the tray looks as though it had been leaking for years and the water was soaked into the floor joist. The joist end was rotten down to about 20mm. I've had the shower out now for over a week but the smell is still strong and the joist still crumbly. If I leave the joist will it dry over time, or do I need to treat it before I refit a new shower tray, and if so what would you recommend.
Regards Otto

 

[Static]

Urm so the joist has rotten leaving 20mm?? Replace the joists..

 

[Deluks]

Fink he meant to a depth of 20mm, same advice applies though.

 

[ottosump]

Fink he meant to a depth of 20mm, same advice applies though.

Thank you for the advice guys, although I was looking to save the joist, its an old Edwardian house and the floor joists are over 9 inches thick. I was thinking that there may be a product available to stabilize the rot.
Regards Otto

 

[tim00]

So you have a joist 9 inches thick with the top 20mm fungus damaged - is that correct? If so, then cut away the top 30/40mm and treat with fungicidal "mayonnaise" paste ( research damp and timber suppliers). Spread liberally well beyond the damaged area.

Check that the damage has not affected the bearing end of the joist in the wall pocket.

After cutting away the rot, sister a bearer piece to give you correct height bearing for the sub-floor covering.

Remove all debris from the bays between the joists.

Curious as to why no signs of water damage on the ceiling below and why only one joist affected?

 

[Nige F]

Curious as to why no signs of water damage on the ceiling below and why only one joist affected?

very small localised leak over a long time