These are very small holes usually at the corners of the sunroof just under the seal step 3 blast compressed air through the drain tubes located at the base of the sunroof seal.
How to fix a leaking roof drain.
Most of that debris would be toward the top opening of the tube.
To do this initially clean the drain with a wire brush.
Make a hose reducer with ordinary pvc plumbing parts.
To fix the leak you ll have to locate the area of your ceiling that is.
Look for identifiable signs of moisture.
Putting down drop cloths or a plastic tarp underneath the bucket will.
Begin soaking low on the roof just above where the leak is visible inside the house.
Run water over the low side of the penetration for several minutes while the helper watches for any water droplets.
Next using a hose attached to the blow gun push the hose in the drain and then allow the air to push out the clog.
If a leak is difficult to find enlist a helper and go up on the roof with a garden hose.
Pull away the damaged piece of the pipe unscrewing it from the property if necessary.
Lay down drop cloths or tarps under the leak.
For example soak the downhill side of a chimney first then each side then the top on both sides.
It is designed to catch water that gets through the sunroof.
Start low soaking the area just above where the leak appears in the house.
2 x research source these tubes.
Draining the leak 1.
Isolate areas when you run the hose.
Once you ve created your hose reducer attach a vinyl hose to the end and vacuum the crud out of the water channel and the drain tube.
Pour water into drain once you re finished pour some water into the drain to make sure the clog is gone.
To clean your drain use compressed air or a cotton swab to dislodge any debris that could be clogging the tube.
Here is have a small compressor with a regulator which can control the air pressure so using the regulator i like to keep the pressure at around 30psi.
Wipe it with a cloth to remove any visible debris on the seals and edges of the sunroof 1 x research sourcestep 2 locate the sunroof drain tubes.
If the leak has caused a significant amount of damage it is best to replace the entire damaged section of the roof drain.
You ll need a pvc trap adapter to fit the vacuum hose a pvc cap to fit the adapter and a 3 8 in.