Plumbing – How to tell where water is leaking from

freezingleakplumbingsmoke-detectors

I live in Wyoming and for the past few days we had below zero temperatures and tons of snow. Many people reported pipes breaking but we seemed to be fine. Today it also warmed up a bunch to around the 40's fahrenheit.
Yesterday we also replaced a filter in our furnace and the house is a lot more toasty.
In the middle of the night last night all of our smoke alarms went off. It took us about 25 minutes to realize one of them, located in the basement, was making a weird sound so we pulled it out.
When we did, a bit of water poured out from behind it–about 1/3 a cup.

I looked online and another individual reported a similar problem. They believe it was just water condensation.

I left a bowl under the leak and it drips very slowly but consistently.

Overnight and until now it's only about 1/4 of a cup or so of water that has formed in the bowl.

Other sources online have stated it could be a leak from outside.

So I wonder…
Is it water leaking in because of all the melting snow? (it's extremely wet everywhere outside)
Is it a cracked pipe from the cold temperatures?
Is it water condensation from the pipes warming up?

Any help would be much appreciated!

Best Answer

It sounds more like condensation. Warm air is escaping into the attic, where it meets cold air, condenses and forms liquid.

While it could be a leak in your roof, the fact that you're only noticing it at your smoke detector usually points to condensation, otherwise you'd expect to see other signs of water damage (stains on ceiling, spongy feeling drywall, etc.)

You really need to get into your attic to confirm. If it's wet all over, good chance you have a leak, but if there is insulation missing around where your smoke detector is (wires, etc.), then you want to ensure you properly seal the hole and ensure the area is adequately insulated.