After a telephone inquiry about a collapsing floor, our survey found dry rot was the culprit. Water penetrating into the sub floor by a blocked gully was the cause of the out break.
A new path construction a few years ago blocked up this rooms sub floor ventilators causing an attack of wet rot to the wall plate and joists.
We had a request by a client to look at a wall for rising damp. Upon inspection we could see the original dpc, so we decided to cut a few bricks out to see if there was rubble in the cavity. As you can see there was loads.