I have damp patch on my ceiling

Check the floor above for signs of damp. If there is a property above you we would recommend you speak to the occupant above to see if they are also suffering signs of a leak. If there is a roof above, please see our answer to “Water stains have appeared in my property after heavy rainfall. What do I do? “.

If there is a bathroom or shower above the area this could also be the source of the leak. You could investigate using a simple water test with a shower head around your bath and shower seals.