Do you see definite dampness internally or is it just the mould growth. Do you have any idea how long it took for the mould to grow?
LHL,
The bottom panel of the book case must be lifted and the plaster removed from the rear/party wall.
Whatever is exposed will then have to be followed up - maybe below the floor.
Have you located an access trap for the sub-floor crawl space?
Its possible that all the recess plaster will have to be hacked off and all the skirting and woodwork removed.
Its even possible that the skirting and plaster below the window will also have to be removed to bare brickwork - likewise the plaster to the left of the window.
It might be the pic but the skirting in the recess looks to be an older profile than the exterior skirting, plus the plaster is not the original plaster, perhaps remedial work has been performed before?
Exterior work required has been noted above, plus the external DPC must be located and exposed, free from any bridging.
There are other outstanding issues, and things to say that might help you and others who follow these threads but, for now, if you wish for further advice then come back here.
FWIW: there are no easier softer ways of dealing with what you have - only the correct way.
Unfortunately, that's how these people operate. Wind up the fear factor and then move in with the unnecessary work and extortionate prices.Thank you for your reply. I feel an overwhelming sense of despair about all this. The thought of ripping out the woodwork, omg...
Anything that you do to the fungal growths in the pics will only be cosmetic. You must go to the source and the cause of the source - you have already been advised on how to locate and deal with it.
As i mentioned above, i suspect that previous "cosmetic" remedial work has been done - and you now have the result.
The previous advisors, jeds and gregors, would have led you further up the garden path - but only because you wanted to be led that way. Its understandable, who wants expense and disruption.
As for your other questions: who knows?
What i've swerved so far, is the possibility of Dry Rot developing in the above conditions at some time in the future.
By the way, your shelving appears to be a very non-Victorian white melamine.
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local