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No, rising damp is drawn from the ground by capilliary action and usually that action cannot cause damp to rise more than 1.5 mt from the ground and often less which is why I suggest applying the paper to that height. I also suggest this is a course of action for "minimal damp" problems implying that if you have a raging case of rising damp you should seek a barrier method.

Susan, for clarity I am not suggesting this as some sort of experiment. I've used this before over 30 years of dealing with old victorian houses and it works just as I have suggested.

In old houses in the Uk damp can cause decor problems in a number of ways which are difficult to eradicate by barrier method. For example , many old chimney breasts are supported at ground level by a 3 piece arrangement of old porous type stone. Without removing these completely and reforming this arrangement it's hard to stop the damp by injection because the porous nature of the stone is hard to fill by injection . Treating those areas by using metallic backed paper does stop the damp causing decorative problems by at least stopping the damp materialising internally.

In effect using this method I expect the damp to take the next course of least resistance which will be to transmit through the external wall of the property. Given that any damp problem you have will already be acting externally I don't think that should be an issue.

19th August 2008, 09:21	#49
BernardMatthews Senior Member	Re: Damp proofing No, rising damp is drawn from the ground by capilliary action and usually that action cannot cause damp to rise more than 1.5 mt from the ground and often less which is why I suggest applying the paper to that height. I also suggest this is a course of action for "minimal damp" problems implying that if you have a raging case of rising damp you should seek a barrier method. Susan, for clarity I am not suggesting this as some sort of experiment. I've used this before over 30 years of dealing with old victorian houses and it works just as I have suggested. In old houses in the Uk damp can cause decor problems in a number of ways which are difficult to eradicate by barrier method. For example , many old chimney breasts are supported at ground level by a 3 piece arrangement of old porous type stone. Without removing these completely and reforming this arrangement it's hard to stop the damp by injection because the porous nature of the stone is hard to fill by injection . Treating those areas by using metallic backed paper does stop the damp causing decorative problems by at least stopping the damp materialising internally. In effect using this method I expect the damp to take the next course of least resistance which will be to transmit through the external wall of the property. Given that any damp problem you have will already be acting externally I don't think that should be an issue.