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Riser Leak Noticed-Any guesses as to what we'll find?
After firing up the boiler a few weeks ago for the season, we just noticed some water on the basement floor and saw it was coming from the last riser to the 1st & 2nd floor tennant bedroom radiators as shown in the photos (then one more 1st floor hall radiator/riser after that, then it returns via the ceiling dry return back to the boiler room & drops to the boiler). We'll take off the insulation and look up the riser to see if we can isolate the leak area (and go into both bedrooms to see if it's near the radiator valves or the pipe run itself that's leaking-with any luck this might be a big portion of the higher water use we noticed the past season). Any thoughts on what it might be/stopping the leak & letting the insulation dry out & replacing it in a few days/weeks, or does fiberglass insulation lose effectiveness long-term after being wet for a while & should be replaced with new insulation?