My wife and I moved into our condo in 1998. The condo was about 10 years old when we moved in. We got the place cheap because there was a lot of work needing to be redone - we repainted and recarpeted everything and replaced all the appliances and many of the lighting fixtures and things when we moved in. When we moved in we noticed some apparant water damage on one windowsill, but didn’t think much of it.
The room where that windowsill is became my workshop, and the window in question was almost completely blocked off by a stack of storage crates.
In 2001 I discovered that yellowjacket wasps had a next in the outside wall just under the window. They were using a small gap in the exterior siding to get in and out. I sprayed the hole with wasp killer and then sealed the gap with silicone and haven’t seen them since. Possibly unrelated, although now I’m thinking it might indicate rotting or damage inside the wall.
Earlier this year the occupant of the condo above us died. When the condo was cleared out and refinished for new occupants, they completely tore out and replaced much of the balcony and exterior. Apparantly there had been a persistent problem with water leaking into the condo around the balcony, which is directly above the window where we have water damage.
We have had an unusually wet and humid summer. My wife has been complaining for months about a mildewy smell around my workshop. Recently I completely cleared out the shop, throwing out things I hadn’t used in years and consolidating a lot of what was left. While I had everything cleared away from the walls and windows I decided to see if I could find the source of the odor.
When I opened the window shade on the sindow in question, I found a suprisingly large amound of some kind of dry dirt or sawdust-like-material on the windoesill and in the cracks around the window. I also found a number of dessicated corpses of some kind of grub-like insect. After cleaning all this up I found a deep crack along the top of the window, which I could insert a screwdriver blade into and knock loose more “dirt”. The windowsill was also cracked and spongy-feeling in spots, and a piece of it broke off when prodded. The walls around and above the window don’t sound any more hollow than the walls elsewhere when tapped, but the whole condo is pretty cheaply made and the walls everywhere seem thin and hollow.
I’m thinking that there’s probably some fairly severe water damage inside the wall. I’m also thinking that the condo association won’t pay to have any repairs done, since they’re only liable for repairs to the exterior of the building.
Is there any way for me to determine what the extent of the damage is, short of tearing the wall open? How much is this likely to cost to repair? My wife and I are planning on moving out of the condo within a few years, and the problem of water leaking into the wall seems to have been stopped, so my inclination is to simply caulk and putty over the existing damage.