Zoom in. Can you see the drill holes?Maybe all those buildings in the photo have lovely injection DPC's?
Zoom in. Can you see the drill holes?Maybe all those buildings in the photo have lovely injection DPC's?
Zoom in. Can you see the drill holes?
You'll need a lot of time. Rising damp does not happen immediately, it can take decades before the salt deposits have built up enough to mean capillary action overcomes gravity.Presumably a crack would destroy any alleged capillary action.
When I've more free time I'll do my own experiment with old bricks on whether water can actually seep up beyond a discontinuity such as a mortar joint.
... you wouldnt see those buildings, as they are in Bruges.if I were in Venice
You'll need a lot of time. Rising damp does not happen immediately, it can take decades before the salt deposits have built up enough to mean capillary action overcomes gravity.
A crack would destroy capillary action, but only where the crack is. And you can't have all the wall be cracks, or it will no longer exist ... so still plenty of scope for rising damp in a cracked wall.
To be fair, @^woody^ didn't say that they are in Venice.... you wouldnt see those buildings, as they are in Bruges.
Here's some houses in Venice. They must have had a very high tide that morning for the penetrating damp to get that high!
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If it's true capillary action then it shouldn't take long at all.You'll need a lot of time. Rising damp does not happen immediately, it can take decades before the salt deposits have built up enough to mean capillary action overcomes gravity.
A crack would destroy capillary action, but only where the crack is. And you can't have all the wall be cracks, or it will no longer exist ... so still plenty of scope for rising damp in a cracked wall.
Isn't that the very question of this thread?So if the wall allows penetrating damp, why would it not allow rising damp (under the right conditions)?
salts increasing capillary action, strikes me as being relevant.
The brick in the photo was in about an inch of water and rose up a few inches in a couple of hours. Went up a thermalite even quicker.When I've more free time I'll do my own experiment with old bricks on whether water can actually seep up beyond a discontinuity such as a mortar joint.
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