I replaced the windowsill in my conservatory and noticed the DPC below the dwarf wall was bridged across the cavity. It looks like they have used a wide flat DPC around the walls. Will this cause any problems?
If I understand you correctly, both the walls and the rubble are isolated from the floor. But rain falling or splashing onto the outer leaf would make the rubble damp. It is possible, using a builders canister vac with metal extension tube, to suck up small rubble and pull bricks towards you. If you have access, do that.
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.
Please select a service and enter a location to continue...
Are you a trade or supplier? You can create your listing free at DIYnot Local