Thor Legvold wrote:

Hi Doug,

thanks for the reply. If I understand you correctly, we need to dig up
around the house, provide a membrane and proper drainage, seal the
windows appropriately and then deal with any moisture.

Thor, some more description may help. Are we talking about a "daylight
basement" (common term where I live, where slope of the terrain allows
1 or 2 sides to be above grade with outside entrances and windows) or
are you below grade on all 4 sides, and the windows in "wells"? Do you
have natural drainage or a sump pump that could remove water collected
by a dehumidifier?

As others have said, dehumidifying the whole outdoors is not viable,
so seal the windows, then let the dehumidifier do what the leaky
windows were "designed" to do. And if you want ventilation, install a
vent that you can open and close, while letting the windows work
correctly.

You might want to buy a cheap hygrometer (did I get the name right?)
at Radio Shack to see what your humidity is. That, along with the
volume of the area will five you a start to determining what size unit
you need.
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