Trapping water the problem with j channels is that when improperly used or installed they trap water and can provide an entry point for water to get behind the siding.
Water problem where roof is corner.
This is because the flat roof can hinder drainage from rainwater which results in standing water on the roof.
It can seep and find its way behind walls and even underneath the concrete slab of your garage.
Also make sure the gutters are clean and flowing properly.
If your ceiling has a plastic vapor barrier between the drywall and the attic insulation push the insulation aside and look for flow stains on the plastic.
The best solution here is to equip downspouts with long horizontal extensions that channel roof water away from the foundation and into an area of the yard where the water is absorbed or directed away from the house.
Caulk can be old cracked or even missing between the corner boards and between window edges and siding.
Measure and mark the center of the drip edge with a tape measure mark a line across the center with a straightedge.
5 mount the ladder and carry the drip.
For water stains coming from your roof you ll need to identify the nature of the disrepair.
This is most prominent in j channels that run horizontally such as trim running along a window frame.
Often water runs to openings in the vapor barrier such as at ceiling light fixtures.
There can be other sources of water seepage from your roof other than a leak.
Water being in liquid form can easily travel around your house.
Water runs down the siding and can collect in the j channel.
Cut it in half with a pair of tin snips.
Dormer walls provide lots of spots where water can dribble down and enter the roof.
Often wind driven rain comes in from above the roof especially around windows between corner boards and siding and through cracks and knotholes in siding.
Water may be entering at the roof seam and traveling along until it has the opportunity to come through the paneling and run down the back wall.
Some roof leaks are tough to locate.
Possible sources of the leak because water is pooling up on the floor at the rear corners of the unit doesn t always mean the moisture is coming in through the vertical corner seams.
In an effort to extent the life of our tile roof we hired a highly recommended local roofer to install drip edges on the north side edges of our roof and wa.
This is especially prevalent after a lot of rainstorms.
Sometimes the water shows up at a ceiling spot distant from the leak.
There could be damages already happening behind walls and underneath the roof and floor.
If the water stain occurs after a period of snow for example this can indicate the formation of an ice dam which requires upgrading your insulation not your roofing.