Water damage to subfloor and maybe joist

waheed357 · 2026-07-21T18:44:11+0100

Hi,

I am doing renovation on my parents En Suite thats had water damage to subfloor and maybe part of 1 joist. I am not sure how to go about fixing it as both long side edges of subfloor are rotten and there isn't anything to support the new subfloor there (Above the soil pipe). Also, I think the joist might be ok but not sure as it is pretty mouldy. The side with the hammer on the floor is the external wall with window so not sure how to repair the joist if it is needed.

Can I please have some help with this. I've uploaded a few photos. Thanks

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Water damage to subfloor and maybe joist

waheed357

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