Do the chemical damp proof products advertised actually work ?,I am talking about the ones were you drill holes at intervals along the wall and inject the chemical, if so can anyone recommend a good one ?
Dave
Dave
No. They don't. Please see the various topics on this forum regarding this question.mgdave said:Do the chemical damp proof products advertised actually work ?
I don't understand your reasoning - you seem to be challenging the postulate that rising damp doesn't exist, and you can't find it in your property, but are still saying that the damp you're experiencing must be rising?Lower said:So if there is no such thing as rising damp, why is the plaster permenantly slightly damp to about 2 feet above the floor level, 3 feet above ground level?
When you report that it's damp, how are you measuring it? A damp meter measurement would be useful. And what type of plaster has been used? Some feel colder than others.Lower said:the wall in question is a fully internal, single brick thick wall and at the point where the damp is there is no contact with outside walls so can't be leaking downpipe, penetrating damp etc. There's decent ventilation around the wall at this point, and all the flooring around this area of wall is suspended flooring. There is good ventilation under the floor.
I am basically confused as to why there is damp there if there is no such thing as rising damp. It seems to be more than just condensation because the recent skim coat of plaster took much longer than the rest of the room to dry, and never went the same colour as the rest of the plaster. the wall is never wet to the touch, its not that extreme dampness but never the less it is there.
Although rare but I have seen sloppy bricklayers dropping mortar in the cavity therefore can transfer damp across and not using batten/rope to collect the mortar dropping. Another one I have seen is a dpc covering the 2 cavity wall together so any mortor dropping will cause damp acrossSoftus said:How is the inner wall attached to the outer wall?
masona - he said it has no cavity - it's an internal wall.masona said:Although rare but I have seen sloppy bricklayers dropping mortar in the cavity therefore can transfer damp across and not using batten/rope to collect the mortar dropping. Another one I have seen is a dpc covering the 2 cavity wall together so any mortor dropping will cause damp acrossSoftus said:How is the inner wall attached to the outer wall?
Softus said:When you report that it's damp, how are you measuring it? A damp meter measurement would be useful. And what type of plaster has been used? Some feel colder than others.Lower said:the wall in question is a fully internal, single brick thick wall and at the point where the damp is there is no contact with outside walls so can't be leaking downpipe, penetrating damp etc. There's decent ventilation around the wall at this point, and all the flooring around this area of wall is suspended flooring. There is good ventilation under the floor.
I am basically confused as to why there is damp there if there is no such thing as rising damp. It seems to be more than just condensation because the recent skim coat of plaster took much longer than the rest of the room to dry, and never went the same colour as the rest of the plaster. the wall is never wet to the touch, its not that extreme dampness but never the less it is there.
Also, note that bare plaster isn't a common wall finish, and it does absorb moisture from the surrounding air. What kind of rooms are either side of the wall? How many people live in the house? Do you have double glazing with no draughts? Do you have any extractor fans? How many radiators do you have? What is the average room temperature?
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