Peter Barber
Hi Stacey. Difficult to advise without further info. If the damp patch is at high level then it may be the roof flashing. When a conservatory is constructed there is sometimes a weak area on the join with the original property. In this case you would need a roofing contractor. If the dampness area is showing mould growth, then may be condensation. In this case a ventilation specialist is called for. If the conservatory is constructed on a dwarf wall and the dampness is showing there, then it may be due to a defective, or absent damp proof course. In which case a damp proofing experts will be needed. I hope that this helps. Best Wishes Peter Barber CSSW.
