Hello,
Sorry if this is a strange question but can the soil under a garage floor increase in moisture content when it rains?
If we assume proper drainage and no gutter/downpipe/drains/water main/roof problems then can the soil for example under a concrete garage floor become "wetter" when it rains?
For example if you had a concrete/tarmacked drive that sloped towards the house and at the end of the drive proper drainage then would that keep the soil under the garage floor dry?
But if you had a gravel drive or block paved drive that let some water through to the ground then would that water seep under the garage floor? Does water "flow" under a garage/house if the house is on a hill?
The reason I ask is I have a concrete garage floor laid on a dpc sheet. But at the internal side of the garage (the cavity wall of the house) the bricks under the house dpc (150mm up from garage floor) have damp areas when it rains. Could this be considered normal/expected?
I've taken a brick out where the damp seems the worst and the inner leaf of the cavity shows no damp areas. So I've concluded that the soil under the garage must be damp.
Any thoughts? Thanks
Bob
Sorry if this is a strange question but can the soil under a garage floor increase in moisture content when it rains?
If we assume proper drainage and no gutter/downpipe/drains/water main/roof problems then can the soil for example under a concrete garage floor become "wetter" when it rains?
For example if you had a concrete/tarmacked drive that sloped towards the house and at the end of the drive proper drainage then would that keep the soil under the garage floor dry?
But if you had a gravel drive or block paved drive that let some water through to the ground then would that water seep under the garage floor? Does water "flow" under a garage/house if the house is on a hill?
The reason I ask is I have a concrete garage floor laid on a dpc sheet. But at the internal side of the garage (the cavity wall of the house) the bricks under the house dpc (150mm up from garage floor) have damp areas when it rains. Could this be considered normal/expected?
I've taken a brick out where the damp seems the worst and the inner leaf of the cavity shows no damp areas. So I've concluded that the soil under the garage must be damp.
Any thoughts? Thanks
Bob