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krazy's avatar
krazy
Explorer
Apr 02, 2014

Roof Leak > Mold Worry?

Hi guys,

It's rainy season here in San Francisco and I've been discovering (and battling) some minor roof leaks, here and there.

In the past week, there's been a couple of days of rain, and each day, I seem to discover a new, minor leak, patch it up the following day, when it's dry, and that's happened a couple times, now.

I have to wonder... when should one start to worry about mold?

The roof 'sandwich' has soaked through a few times, but always dried up with a day or so.

Realistically, when do I need to be concerned about mold?

Everything seems to dry pretty fast, but who can predict what's going in in the inner layers of the roof 'sandwich'? (A few times, I've pressed pretty hard on the dry upholstery exterior and still managed to get some trace moisture out of the wood layer, behind it.)

My roof layers are pretty thin - it's a Rialta with upholstered wood/foam/sheet metal. Also, for what it's worth, the soaked areas are generally pretty small. These haven't been crazy leaks - but they have been leaks.

Thoughts?
  • Can't answer specifically as it relates to an RV's roof but can from a building's: mold can start immediately depending on the local atmosphere. Keep in mind that just because the immediate surface has dried doesn't mean that water trapped further down has. And water always travels down seeking the path of least resistance. I'd work hard to do a total roof repair as soon as possible.

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