That will narrow down the area where the water is coming in.
Chimney cleanout door leaking water.
Seal a leaky chimney cleanout door where the flues are in use.
It could be your chimney that s the issue.
On 2018 08 05 by mod replacing the chimney cleanout door replacing the chimney cleanout door assuming it is on the inside of the building would not explain a water leak problem through the chimney into the building unless in the course of replacing the door someone pounded on masonry and cracked or broke the chimney walls.
Could experiment if not afraid of a bit more water one person with hose one watching ashpit try running a hose for just long enough to pool a bit of water against the foundation of the chimney also along the sides of the chimney on the roof above the chimney but not against it then pouring vertically down on top of the rain cap if not open mesh which obviously would let water in might be able to replicate which of those areas the water is coming from.
Before sealing a chimney cleanout door shut be sure that the door serves only the chimney or flue that is being abandoned.
Gas appliances output a lot of water vapor and if it s not venting properly it will condens.
Use a plumber s putty or even play doh to build a dam on the floor around the cleanout door area.
What this is the metal door that is usually in your furnace room.
Jsotola feb 21 18 at 23 22.
It has an angled top to shed water and it overhangs the brick to keep drips off the chimney sides.
Do not use sealant to caulk shut the cleanout door of a chimney that is in active use as you ll need to be able to open the door later to inspect or clean the chimney base.
This tells you if you should waterproof the chimney.
Is your roof leaking.
One of the most prevalent calls that we get is water coming in the hatch which is the actual clean out for your chimney.
It surrounds the clay flues but doesn t encase them.
It s always below the chimney but it s usually in your utility room in most homes you ll find a pipe coming across from your furnace hot water tank or boiler that ll come across and there s a hatch at the base.
