Hey guys,
Got a damp basement in a 100yo house. Stone block foundation walls, most of the basement is a dry concrete slab, but one end is what looks like a combination of bricks and stones set in dirt, and always damp when it rains. The water definitely comes up from the floor, no wall leaks. Part of the problem was outside drainage - I live downhill from a large (at least 150'x150') parking lot. because of the slope, the downhill corner of the lot ended with a 20' tall retaining wall, and most of the drainage flowed out cracks in the wall right next to my house. They've just finished repairing the wall and routing the drainage around my house in a pipe, but I'm still seeing a little moisture on the dirt side of the basement.
The boiler is located over there, and it's currently pulled to be replaced in another week or two - so it is occurring to me that I could try to seal this floor up a little. I've come up with a game plan from reading around the net some, but I want to run it buy some folks and make sure I'm not missing anything.
The damp area is 8'x8' and enclosed on 3 sides by foundation walls. A previous owner poured concrete along the insides of the stone block in this area (probably an attempt to hold back the flood..) so the walls are sealed and solid. The 4th side transitions to concrete and is consistently dry.
I'm thinking I should first lay a moisture barrier of heavy plastic on the floor and a few feet up the walls, caulking it to the cement to seal in the damp area. On the 4th side I'm slightly stumped ... Maybe a PT board tapconned to the concrete floor to act as an edge, moisture barrier coming up the side of it.
On top of the plastic, to protect it from the new boiler and foot traffic, I was thinking about throwing down an inch or so of sand, then laying cheap pavers.
Because of the small area I've got the whole thing priced out to about $200, so it's not like I'm throwing a ton of money at the idea.. But I'd like to make sure it isn't going to cause bigger problems. Any thoughts?
Got a damp basement in a 100yo house. Stone block foundation walls, most of the basement is a dry concrete slab, but one end is what looks like a combination of bricks and stones set in dirt, and always damp when it rains. The water definitely comes up from the floor, no wall leaks. Part of the problem was outside drainage - I live downhill from a large (at least 150'x150') parking lot. because of the slope, the downhill corner of the lot ended with a 20' tall retaining wall, and most of the drainage flowed out cracks in the wall right next to my house. They've just finished repairing the wall and routing the drainage around my house in a pipe, but I'm still seeing a little moisture on the dirt side of the basement.
The boiler is located over there, and it's currently pulled to be replaced in another week or two - so it is occurring to me that I could try to seal this floor up a little. I've come up with a game plan from reading around the net some, but I want to run it buy some folks and make sure I'm not missing anything.
The damp area is 8'x8' and enclosed on 3 sides by foundation walls. A previous owner poured concrete along the insides of the stone block in this area (probably an attempt to hold back the flood..) so the walls are sealed and solid. The 4th side transitions to concrete and is consistently dry.
I'm thinking I should first lay a moisture barrier of heavy plastic on the floor and a few feet up the walls, caulking it to the cement to seal in the damp area. On the 4th side I'm slightly stumped ... Maybe a PT board tapconned to the concrete floor to act as an edge, moisture barrier coming up the side of it.
On top of the plastic, to protect it from the new boiler and foot traffic, I was thinking about throwing down an inch or so of sand, then laying cheap pavers.
Because of the small area I've got the whole thing priced out to about $200, so it's not like I'm throwing a ton of money at the idea.. But I'd like to make sure it isn't going to cause bigger problems. Any thoughts?